Preparation method of double-sided double-glass full-color photoelectric functional material used as identification label

Abstract

The invention discloses a preparation method of a double-sided double-glass full-color photoelectric functional material used as an identification label in the field of double-sided double-glass photovoltaic modules, and the method comprises the following steps: S1, assembling a double-sided crystal silicon plate: adopting a single-crystal double-sided battery piece to realize the assembling effect of the double-sided crystal silicon plate, installing the single-crystal double-sided battery piece at the center during assembling, and installing the single-crystal double-sided battery piece at the bottom of the double-sided crystal silicon plate; the photovoltaic energy collecting assemblies are attached to the two sides of the single-crystal double-face battery piece respectively, the photovoltaic energy collecting assemblies are symmetrically distributed on the two sides of the single-crystal double-face battery piece at equal intervals in a matrix mode, the multiple photovoltaic energy collecting assemblies are electrically connected with the single-crystal double-face battery piece, and the multiple photovoltaic energy collecting assemblies are connected with the single-crystal double-face battery piece in parallel. According to the invention, the full-color micro-image layer is added on the double-sided double-glass photovoltaic module, so that the application scene problem is solved; the double-glass photovoltaic module added with the full-color micro-image layer is used as a material of the identification label, so that the problem of light utilization rate is solved.

Description

Technical Field

[0001] The invention relates to the technical field of double-sided double-glass photovoltaic components, and in particular to a method for preparing a double-sided double-glass full-color photovoltaic functional material used as a logo plate. Background Art

[0002] Add full-color micro-layer technology to single-sided crystalline silicon photovoltaic modules to produce full-color optoelectronic functional materials, which have a wide range of applications and can be used as signs and labels;

[0003] Based on the demand for increasing power generation, double-glass bifacial modules have been introduced on the market. The most intuitive feature is that the back of the module can also generate electricity. It mainly uses the technology in the field of solar cells to make the original opaque back electrode into a grid line that is as transparent as the front, and then through certain doping methods, the back is also made into a PN junction, thereby ensuring that reflected light and scattered light can be normally captured. Due to the double-sided design, the module can capture the light reflected from the ground, especially in environments with high reflectivity such as snow and sand, the power generation can be significantly improved. The back gain of the module is between 5% and 25%. At present, the price of bifacial modules is generally based on the front power. The cost is increased by 5 cents, which is equivalent to an increase of about 2% to 3%, so it is widely used.

[0004] The existing technology has the following problems:

[0005] 1. Existing double-sided double-glass photovoltaic modules are not fully colored and cannot be integrated into more scenarios.

[0006] 2. The existing full-color optoelectronic functional materials used to make signs and signs are single-sided crystalline silicon components, which do not make sufficient use of light.

[0007] 3. If a full-color micro-layer is added to the double-sided double-glass photovoltaic module, the light distribution will be uneven due to the obstruction of the battery cell, resulting in light and dark partitions in the full-color layer, affecting the visual effect. Summary of the invention

[0008] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0009] The purpose of the present invention is to address the technical problems existing in the background technology. The present invention proposes a preparation method of a double-sided double-glass full-color optoelectronic functional material used as a signboard. The present invention solves the application scenario problem by adding a full-color micro-layer on the double-sided double-glass photovoltaic module; the double-glass photovoltaic module with the full-color micro-layer added is used as the material for the signboard to solve the light utilization problem; black grid stripes are printed on the inner side of the double glass according to the irradiation angle and area of ​​the light to solve the problem that the double-sided crystalline silicon module cell blocks the light and causes the full-color layer to have light and dark partitions, affecting the visual effect; outdoor varnish is applied on the surface of the full-color micro-layer to solve the weather resistance problem of the full-color micro-layer and extend the service life of the full-color optoelectronic functional material.

[0010] The present invention proposes a method for preparing a double-sided double-glass full-color optoelectronic functional material used as a sign, comprising the following steps:

[0011] S1 is a step of assembling a double-sided crystalline silicon panel. In this step, a single-crystalline double-sided cell is used to achieve an assembly effect of a double-sided crystalline silicon panel. During assembly, the single-crystalline double-sided cell is installed at the center, and photovoltaic energy collection components are respectively attached to both sides of the single-crystalline double-sided cell. The photovoltaic energy collection components are symmetrically distributed in a matrix with equal spacing on both sides of the single-crystalline double-sided cell, and a number of photovoltaic energy collection components are electrically connected to the single-crystalline double-sided cell, and a number of photovoltaic energy collection components are connected to the single-crystalline double-sided cell in parallel;

[0012] S2 high-transmittance adhesive film laminating step, in which a high-transmittance adhesive film is laminating on the side of the photovoltaic energy collection component away from the monocrystalline double-sided cell sheet. The high-transmittance adhesive film is a transparent film. Since a number of photovoltaic energy collection components are evenly spaced and arranged in a matrix on the side of the monocrystalline double-sided cell sheet, there are gap grooves with the same width on the surface of the photovoltaic energy collection component. The depth of the groove is the thickness of the photovoltaic energy collection component. A protrusion with the same width and depth as the gap of the photovoltaic energy collection component is provided on the side where the high-transmittance adhesive film is laminating to the photovoltaic energy collection component. The surface of the photovoltaic energy collection component can be made flat by laminating the high-transmittance adhesive film on the surface of the photovoltaic energy collection component. The gap of the photovoltaic energy collection component is filled by the high-transmittance adhesive film to make the outer surface smooth;

[0013] S3 is a step of processing a high-transmittance glass backplane, in which two sets of high-transmittance glass backplanes are cut into the same size as the above-mentioned single-crystal double-sided cell sheets, and a black grid is applied on one side of the two sets of high-transmittance glass backplanes. The width of the black grid is the width of the gap of the photovoltaic energy collection component. The black grid is aligned with the gap position of the photovoltaic energy collection component, and the remaining part of the black grid is aligned with the position of the photovoltaic energy collection component;

[0014] S4 is a step of laminating a high-transmittance glass back panel, in which the high-transmittance glass back panel after spraying is laminated on the surface of the high-transmittance adhesive film. During the laminating process, the side of the high-transmittance glass back panel with the black grid sprayed thereon contacts the surface of the high-transmittance adhesive film and is aligned with the gap of the photovoltaic energy collection component during the laminating process, thereby achieving the black grid blocking effect on the single-crystal bifacial cell sheet at the bottom of the gap of the photovoltaic energy collection component;

[0015] S5 is a step of spraying a full-color micro-layer. In this step, a full-color micro-layer is sprayed on the outer side surface of the high-light-transmittance glass back panel. The content of the full-color micro-layer is customized according to the actual road use requirements, so that the surface of the high-light-transmittance glass back panel has a full-color logo sign pattern, so that the high-light-transmittance glass back panel has a logo sign prompt effect;

[0016] S6 is a step of spraying outdoor varnish, in which the surface of the full-color micro-layer is covered with outdoor varnish. The outdoor varnish coating can protect the full-color micro-layer. In addition, since the full-color micro-layer is printed by inkjet printing, irregular micro-depressions will be generated on the surface of the full-color micro-layer as the printing ink solidifies. The micro-depressions will produce diffuse reflection under the irradiation of light, thereby reducing the refractive index of light. The step of spraying outdoor varnish can fill the micro-depressions on the surface of the full-color micro-layer, thereby making the outer surface of the outdoor varnish smooth.

[0017] By adopting the above technical solution, the present solution can collect light diffusely reflected from the ground through double-sided lighting without changing the unit lighting area, thereby achieving the effect of improving lighting efficiency.

[0018] Preferably, in the step of assembling double-sided crystalline silicon panels, the single crystal double-sided battery cell used in this step has a plurality of positive contacts on both sides, the shell of the single crystal double-sided battery cell is a negative pole as a whole, the positive contact penetrates the negative pole shell, an insulating ring is provided on the edge of the positive contact, the insulating ring is connected to the negative pole shell, the positive contact is electrically connected to the photovoltaic energy collection component, and the negative pole of the photovoltaic energy collection component is electrically connected to the negative pole shell.

[0019] By adopting the above technical solution, the present solution can prevent the risk of short circuit of the monocrystalline double-sided battery cell through the structure of the insulating ring, and at the same time, the structure of the negative electrode shell can reduce the difficulty of installing the photovoltaic collection component.

[0020] Preferably, in the high-transmittance adhesive film bonding step, adhesive is sprayed on both sides of the high-transmittance adhesive film, the adhesive is in contact with the photovoltaic energy collection component, the adhesive is in contact with the high-transmittance glass back panel, the adhesive is an insulating material, and the adhesive fills the gap between the photovoltaic energy collection component and the single-crystal double-sided battery cell.

[0021] By adopting the above technical solution, this solution ensures the insulation sealing through filling with high-transmittance adhesive film while ensuring the flatness of the surface of the photovoltaic energy collection component, thereby ensuring stable bonding when subsequently bonding the high-transmittance glass backplane.

[0022] Preferably, in the step of processing the high-transmittance glass back panel, the black grids on the two groups of high-transmittance glass back panels processed in this step are mirror-symmetrical, and the mirror-symmetrical black grids are in contact with the adhesive when the high-transmittance adhesive film is bonded to the black grids.

[0023] By adopting the above technical solution, the present solution can shield the portion of the monocrystalline bifacial cell that can be directly exposed to sunlight through the black grid, thereby preventing the cell from overheating.

[0024] Preferably, in the step of spraying the full-color micro-layer, the surface of the high-transmittance glass back panel is sprayed by a spray printer. When the spray printer sprays the high-transmittance glass back panel, the high-transmittance glass back panel needs to be transmitted. At this time, the high-transmittance adhesive film and the adhesive are used to keep the above-mentioned multi-layer structure stable during transmission.

[0025] By adopting the above technical solution, the present solution makes the multi-layer structure connected stably through the high-transmittance adhesive film and the adhesive, thereby avoiding the misalignment between the multi-layer structures during the transmission process.

[0026] Preferably, in the step of spraying outdoor varnish, the surface of the varnish is dried and solidified after the varnish is sprayed, and the outer end surface of the varnish is polished after the varnish is solidified, so as to eliminate micro-depressions generated by the varnish during the solidification process, and a flexible polishing structure including but not limited to a wool wheel is used when polishing the surface of the varnish.

[0027] By adopting the above technical solution, this solution can improve the flatness of the varnish surface through the flexible polishing structure.

[0028] In summary, the present invention includes at least one of the following beneficial effects:

[0029] The full-color micro-layer technology is used to add a full-color micro-layer on the double-glass double-sided photovoltaic group, and the double-sided full-color optoelectronic functional material is used as the raw material for the logo. Define R, G, B (0, 0, 0) or C, M, Y, K (0, 0, 0, 100) as the color of the black grid, and print the black grid on the inner side of the double glass according to the spacing of the cells and the angle of light exposure (the double-sided double-glass full-color optoelectronic functional material is placed vertically on the ground). This step is to ensure uniform distribution of light, so that the light and dark areas of the full-color micro-layer are unified, solving the problem of poor visual effects. In order to protect the full-color micro-layer, this patent applies outdoor varnish on its surface to extend the service life of the full-color optoelectronic functional material. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of a double-sided crystalline silicon plate and a glass back plate combination method of a preparation method of a double-sided double-glass full-color optoelectronic functional material used as a signboard of the present invention;

[0032] Figure 2 Schematic diagram of the glass back panel bonding process in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the assembly of a double-sided crystalline silicon panel in an embodiment of the present invention;

[0034] Figure 4 is a schematic diagram of a bifacial battery in an embodiment of the present invention;

[0035] Figure 5 This is a distribution diagram of photovoltaic energy collection components on a double-sided crystalline silicon panel in an embodiment of the present invention;

[0036] Figure 6 Schematic diagram of the surface of the high-transmittance glass back panel in an embodiment of the present invention;

[0037] Figure 7 Schematic diagram of a conventional battery in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-7 The present invention is described in further detail.

[0039] Embodiment 1

[0040] like Figure 1-Figure 7 As shown, in this embodiment, in order to solve the existing problems, the present invention discloses a method for preparing a double-sided double-glass full-color optoelectronic functional material used as a sign, comprising the following steps:

[0041] S1 is a step of assembling a double-sided crystalline silicon panel. In this step, a single-crystalline double-sided cell is used to achieve an assembly effect of a double-sided crystalline silicon panel. During assembly, the single-crystalline double-sided cell is installed at the center, and photovoltaic energy collection components are respectively attached to both sides of the single-crystalline double-sided cell. The photovoltaic energy collection components are symmetrically distributed in a matrix with equal spacing on both sides of the single-crystalline double-sided cell, and a number of photovoltaic energy collection components are electrically connected to the single-crystalline double-sided cell, and a number of photovoltaic energy collection components are connected to the single-crystalline double-sided cell in parallel;

[0042] S2 high-transmittance adhesive film laminating step, in which a high-transmittance adhesive film is laminating on the side of the photovoltaic energy collection component away from the monocrystalline double-sided cell sheet. The high-transmittance adhesive film is a transparent film. Since a number of photovoltaic energy collection components are evenly spaced and arranged in a matrix on the side of the monocrystalline double-sided cell sheet, there are gap grooves with the same width on the surface of the photovoltaic energy collection component. The depth of the groove is the thickness of the photovoltaic energy collection component. A protrusion with the same width and depth as the gap of the photovoltaic energy collection component is provided on the side where the high-transmittance adhesive film is laminating to the photovoltaic energy collection component. The surface of the photovoltaic energy collection component can be made flat by laminating the high-transmittance adhesive film on the surface of the photovoltaic energy collection component. The gap of the photovoltaic energy collection component is filled by the high-transmittance adhesive film to make the outer surface smooth;

[0043] S3 is a step of processing a high-transmittance glass backplane, in which two sets of high-transmittance glass backplanes are cut into the same size as the above-mentioned single-crystal double-sided cell sheets, and a black grid is applied on one side of the two sets of high-transmittance glass backplanes. The width of the black grid is the width of the gap of the photovoltaic energy collection component. The black grid is aligned with the gap position of the photovoltaic energy collection component, and the remaining part of the black grid is aligned with the position of the photovoltaic energy collection component;

[0044] S4 is a step of laminating a high-transmittance glass back panel, in which the high-transmittance glass back panel after spraying is laminated on the surface of the high-transmittance adhesive film. During the laminating process, the side of the high-transmittance glass back panel with the black grid sprayed thereon contacts the surface of the high-transmittance adhesive film and is aligned with the gap of the photovoltaic energy collection component during the laminating process, thereby achieving the black grid blocking effect on the single-crystal bifacial cell sheet at the bottom of the gap of the photovoltaic energy collection component;

[0045] S5 is a step of spraying a full-color micro-layer. In this step, a full-color micro-layer is sprayed on the outer side surface of the high-light-transmittance glass back panel. The content of the full-color micro-layer is customized according to the actual road use requirements, so that the surface of the high-light-transmittance glass back panel has a full-color logo sign pattern, so that the high-light-transmittance glass back panel has a logo sign prompt effect;

[0046] S6 is a step of spraying outdoor varnish, in which the surface of the full-color micro-layer is covered with outdoor varnish. The outdoor varnish coating can protect the full-color micro-layer. In addition, since the full-color micro-layer is printed by inkjet printing, as the printing ink solidifies, irregular micro-depressions will be generated on the surface of the full-color micro-layer. The micro-depressions will produce diffuse reflection under the irradiation of light, thereby reducing the refractive index of light. The step of spraying outdoor varnish can fill the micro-depressions on the surface of the full-color micro-layer, thereby making the outer surface of the outdoor varnish smooth, thereby achieving an increase in the refractive index of light.

[0047] By adopting a double-sided lighting method, this solution can collect the light that shines on the ground and passes through the back of the ground diffuse reflection knife photovoltaic collection component, so that when this solution is actually used, the light energy of the diffusely reflected light can be collected, thereby achieving the effect of improving the lighting efficiency while keeping the lighting area unchanged.

[0048] At the same time, the present invention adds a protective glass backplane on the surface of the photovoltaic module and sprays a full-color micro-layer on the surface of the glass backplane, thereby making the equipment of this solution have a practical road guidance function. Compared with the traditional pure photovoltaic lighting equipment, the equipment improved by this solution has more practical use functions.

[0049] Embodiment 2

[0050] like Figure 1-Figure 7 As shown, in order to solve the existing problems, based on the same concept as the above-mentioned embodiment 1, the preparation method of a double-sided double-glass full-color optoelectronic functional material used as an identification sign also includes: the step of assembling a double-sided crystalline silicon panel, the single crystal double-sided battery cell used in this step has a plurality of positive contacts on both sides, the shell of the single crystal double-sided battery cell is a negative pole as a whole, the contact penetrates the negative pole shell, an insulating ring is provided on the edge of the positive contact, the insulating ring is connected to the negative pole shell, the positive contact is electrically connected to the photovoltaic energy collection component, and the negative pole of the photovoltaic energy collection component is electrically connected to the negative pole shell.

[0051] The high-transmittance adhesive film bonding step comprises spraying adhesive on both sides of the high-transmittance adhesive film, wherein the adhesive contacts the photovoltaic energy collection component, and the adhesive contacts the high-transmittance glass back panel. The adhesive is an insulating material, and the adhesive fills the gap between the photovoltaic energy collection component and the single-crystal double-sided battery cell.

[0052] In the step of processing the high-transmittance glass back panel, the black grids on the two groups of high-transmittance glass back panels processed in this step are mirror-symmetrical, and the mirror-symmetrical black grids are in contact with the adhesive when the high-transmittance adhesive film is attached.

[0053] The step of spraying the full-color micro-layer is to spray the surface of the high-transmittance glass back panel by a spray printer. When the spray printer sprays the high-transmittance glass back panel, the high-transmittance glass back panel needs to be transmitted. At this time, the high-transmittance adhesive film and the adhesive are used to keep the above-mentioned multi-layer structure stable during transmission.

[0054] The step of spraying outdoor varnish includes drying and solidifying the varnish surface after spraying the varnish, and polishing the outer end surface of the varnish after the varnish solidifies, thereby eliminating micro-depressions generated by the varnish during the solidification process, and using flexible polishing structures including but not limited to wool wheels when polishing the varnish surface.

[0055] The specific working principle is: the present invention can keep the outer surface of the high-transmittance glass back panel smooth. In actual use, the smooth outer surface can make the surface wind resistance of the device smaller, thereby reducing the rate of loss of varnish in the natural environment. At the same time, the smooth surface can make the light refractive index higher when the driver observes the high-transmittance glass back panel, thereby making the signs observed by the driver more vivid.

[0056] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a double-sided double-glass full-color optoelectronic functional material used as a sign, comprising the following steps: S1 is a step of assembling a double-sided crystalline silicon panel. In this step, a single-crystalline double-sided cell is used to achieve an assembly effect of a double-sided crystalline silicon panel. During assembly, the single-crystalline double-sided cell is installed at the center, and photovoltaic energy collection components are respectively attached to both sides of the single-crystalline double-sided cell. The photovoltaic energy collection components are symmetrically distributed in a matrix with equal spacing on both sides of the single-crystalline double-sided cell, and a number of photovoltaic energy collection components are electrically connected to the single-crystalline double-sided cell, and a number of photovoltaic energy collection components are connected to the single-crystalline double-sided cell in parallel; S2 high-transmittance adhesive film laminating step, in which a high-transmittance adhesive film is laminating on the side of the photovoltaic energy collection component away from the monocrystalline double-sided cell sheet. The high-transmittance adhesive film is a transparent film. Since a number of photovoltaic energy collection components are evenly spaced and arranged in a matrix on the side of the monocrystalline double-sided cell sheet, there are gap grooves with the same width on the surface of the photovoltaic energy collection component. The depth of the groove is the thickness of the photovoltaic energy collection component. A protrusion with the same width and depth as the gap of the photovoltaic energy collection component is provided on the side where the high-transmittance adhesive film is laminating to the photovoltaic energy collection component. The surface of the photovoltaic energy collection component can be made flat by laminating the high-transmittance adhesive film on the surface of the photovoltaic energy collection component. The gap of the photovoltaic energy collection component is filled by the high-transmittance adhesive film to make the outer surface smooth; S3 is a step of processing a high-transmittance glass backplane, in which two sets of high-transmittance glass backplanes are cut into the same size as the above-mentioned single-crystal double-sided cell sheets, and a black grid is applied on one side of the two sets of high-transmittance glass backplanes. The width of the black grid is the width of the gap of the photovoltaic energy collection component. The black grid is aligned with the gap position of the photovoltaic energy collection component, and the remaining part of the black grid is aligned with the position of the photovoltaic energy collection component; S4 is a step of laminating a high-transmittance glass back panel, in which the high-transmittance glass back panel after spraying is laminated on the surface of the high-transmittance adhesive film. During the laminating process, the side of the high-transmittance glass back panel with the black grid sprayed thereon contacts the surface of the high-transmittance adhesive film and is aligned with the gap of the photovoltaic energy collection component during the laminating process, thereby achieving the black grid blocking effect on the single-crystal bifacial cell sheet at the bottom of the gap of the photovoltaic energy collection component; S5 is a step of spraying a full-color micro-layer. In this step, a full-color micro-layer is sprayed on the outer side surface of the high-light-transmittance glass back panel. The content of the full-color micro-layer is customized according to the actual road use requirements, so that the surface of the high-light-transmittance glass back panel has a full-color logo sign pattern, so that the high-light-transmittance glass back panel has a logo sign prompt effect; S6 is a step of spraying outdoor varnish, in which the surface of the full-color micro-layer is covered with outdoor varnish. The outdoor varnish coating can protect the full-color micro-layer. In addition, since the full-color micro-layer is printed by inkjet printing, irregular micro-depressions will be generated on the surface of the full-color micro-layer as the printing ink solidifies. The micro-depressions will produce diffuse reflection under the irradiation of light, thereby reducing the refractive index of light. The step of spraying outdoor varnish can fill the micro-depressions on the surface of the full-color micro-layer, thereby making the outer surface of the outdoor varnish smooth.

2. The method for preparing a double-sided double-glass full-color optoelectronic functional material used as a signboard according to claim 1, characterized in that: The step of assembling double-sided crystalline silicon panels, the single crystal double-sided battery cell used in this step has a plurality of positive contacts on both sides, the shell of the single crystal double-sided battery cell is a negative pole as a whole, the positive contact penetrates the negative pole shell, an insulating ring is provided on the edge of the positive contact, the insulating ring is connected to the negative pole shell, the positive contact is electrically connected to the photovoltaic energy collection component, and the negative pole of the photovoltaic energy collection component is electrically connected to the negative pole shell.

3. The method for preparing a double-sided double-glass full-color optoelectronic functional material used as a signboard according to claim 2, characterized in that: The high-transmittance adhesive film bonding step comprises spraying adhesive on both sides of the high-transmittance adhesive film, wherein the adhesive contacts the photovoltaic energy collection component, and the adhesive contacts the high-transmittance glass back panel. The adhesive is an insulating material, and the adhesive fills the gap between the photovoltaic energy collection component and the single-crystal double-sided battery cell.

4. The method for preparing a double-sided double-glass full-color optoelectronic functional material used as a signboard according to claim 3, characterized in that: In the step of processing the high-transmittance glass back panel, the black grids on the two groups of high-transmittance glass back panels processed in this step are mirror-symmetrical, and the mirror-symmetrical black grids are in contact with the adhesive when the high-transmittance adhesive film is attached.

5. The method for preparing a double-sided double-glass full-color optoelectronic functional material used as a signboard according to claim 4, characterized in that: The step of spraying the full-color micro-layer is to spray the surface of the high-transmittance glass back panel by a spray printer. When the spray printer sprays the high-transmittance glass back panel, the high-transmittance glass back panel needs to be transmitted. At this time, the high-transmittance adhesive film and the adhesive are used to keep the above-mentioned multi-layer structure stable during transmission.

6. The method for preparing a double-sided double-glass full-color optoelectronic functional material used as a signboard according to claim 5, characterized in that: The step of spraying outdoor varnish includes drying and solidifying the varnish surface after spraying the varnish, and polishing the outer end surface of the varnish after the varnish solidifies, thereby eliminating micro-depressions generated by the varnish during the solidification process, and using flexible polishing structures including but not limited to wool wheels when polishing the varnish surface.

Images