Multilayer structure with light transmittance and opacity, and method for manufacturing the same.

Abstract

To provide a method for manufacturing a multilayer structure that is simple in its manufacturing process, low in cost, highly efficient, and exhibits good light transmission and display effects in a multilayer structure. [Solution] A method comprising the steps of: applying a transparent liquid coating to one side of a transparent carrier film; pressing a projection of a transfer mold onto the liquid coating and curing it, and then peeling off the transfer mold after curing to form a recess in the cured liquid coating that conforms to the shape of the projection, thereby obtaining a recessed transparent layer; printing a light-shielding layer on the surface other than the recess by a planar printing process, thereby having a first through-hole in the light-shielding layer at a position corresponding to the recess and communicating with the recess; and printing a decorative layer on the surface other than the first through-hole by a planar printing process, thereby having a second through-hole in the decorative layer at a position corresponding to the first through-hole and communicating with the first through-hole, the second through-hole communicating with the recess through the first through-hole to form a light-transmitting hole, thereby obtaining a multilayer structure.

Description

Technical Field

[0001] The present invention relates to the technical field of housings, and particularly to a multilayer structure having light transmissibility and non-visibility and a manufacturing method thereof.

Background Art

[0002] In many decorative and functional applications, it is necessary to enable a part of the area to transmit light while maintaining an aesthetic pattern. For example, in smart home devices, it is usually necessary to hide the display screen in the housing of the device. When not in use, the display screen is in a hidden state and is integrated with the pattern of the housing. When necessary, information is displayed through the light transmission area. In the design of an automobile dashboard, it is also necessary to display information through the light transmission area on the decorative panel. In furniture and decorative items, a light source effect is realized by the light transmission area on the decorative panel, improving the added value and aesthetics of the product.

[0003] In modern decorative and functional applications, display panel technology with light transmissibility and non-visibility has been attracting increasing attention. This technology designs a light transmission area on a panel with a decorative pattern, enabling the panel to display a screen or light source hidden beneath it under specific conditions, realizing the integration of aesthetics and function. General application scenarios include smart home devices, automobile dashboards, home decorations, advertising billboards, and the housings of electronic products, etc. However, conventional panel technologies with light transmissibility and non-visibility usually involve complex structural designs such as laser cutting or micron-level processing technologies and high-cost manufacturing processes. These methods are difficult to adapt to the needs of mass production due to high costs and low production efficiency.

[0004] To overcome these technological bottlenecks, researchers and engineers have explored various new materials and processes. For example, photochromic, electrochromic, and thermochromic materials can change their transparency through light irradiation, voltage, or temperature changes, enabling the concealment or display of the bottom screen. Liquid crystal display technology and smart glass technology adjust the transparency of the material through electrical control, providing efficient light control. Furthermore, microlouver technology and controllable light-transmitting coatings adjust the light-transmitting area through mechanical or electrical control, achieving precise light transmission control.

[0005] While these new technologies offer various methods for realizing display panels with both light transmission and opacity, they still have certain limitations, such as high material costs, complex processes, and limited applicability. Therefore, developing a simple, efficient, and low-cost multilayer structure and manufacturing method for display panels with both light transmission and opacity is key to solving this problem. [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] The main objective of the present invention is to provide a multilayer structure with light transmittance and opacity, and a method for manufacturing the same, in order to solve the technical problems of the prior art, such as the complexity, high cost, and low production efficiency of the manufacturing process of multilayer structures. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a method for manufacturing a multilayer structure having light transmittance and opacity, and the manufacturing method is as follows: The steps include preparing a transparent carrier film and applying a transparent liquid coating to one side of the transparent carrier film, The process involves preparing a transfer mold having pre-set protrusions, pressing the protrusions of the transfer mold onto the liquid coating, curing the liquid coating, and then peeling off the transfer mold after curing to form recesses in the cured liquid coating that conform to the shape of the protrusions, thereby obtaining a recessed transparent layer. A step of printing a light-shielding layer on one side of the recessed transparent layer away from the transparent carrier film, other than the recess, by a planar printing process, thereby having a first through-hole communicating with the recess at a position corresponding to the recess in the light-shielding layer, The process includes the step of obtaining a multilayer structure by printing a decorative layer on one side of the light-shielding layer away from the transparent carrier film, excluding the first through-hole, using a planar printing process, thereby having a second through-hole in the decorative layer at a position corresponding to the first through-hole, communicating with the first through-hole, and the second through-hole communicating with the recess through the first through-hole to form a light-transmitting hole.

[0008] Furthermore, in one embodiment, the step of printing a light-shielding layer on one side of the recessed transparent layer away from the transparent carrier film, other than the recess, by the planar printing process, consists of three steps: The steps include preparing a printing plate with pre-set graphic information, and applying ink to one side of the printing plate on which the graphic information is provided, The steps include transferring the aforementioned ink to a blanket, The method includes the step of covering one side of the blanket having the ink with the side of the recessed transparent layer away from the transparent carrier film, and applying pressure to transfer the ink from the blanket to the surface of the recessed transparent layer other than the recess, thereby forming the light-shielding layer having the first through-hole.

[0009] Furthermore, in one embodiment, the step of preparing a printing plate for the pre-set graphic information and applying ink to one side of the printing plate on which the graphic information is provided consists of three steps. The steps include transferring the pre-set graphic information, which includes one or more patterns or characters, to a printing plate having an oil-lipophilic and hydrophobic graphic area and a hydrophilic and oil-phobic blank area, by photograph or electronic color separation. The steps include applying ink to the graphic area of ​​the printing plate and allowing the ink to adhere to the graphic area, The process includes the step of wetting the blank areas of the printing plate with a wetting solution to form a water film on the blank areas.

[0010] Furthermore, in one embodiment, the step of transferring the ink to the blanket is: The process includes the step of covering the ink surface of the printing plate with a blanket, thereby transferring the ink located on the printing plate from the printing plate to the blanket.

[0011] Furthermore, in one embodiment, the decorative layer includes a pattern layer and a base layer, and the base layer is provided on one side of the light-shielding layer away from the transparent carrier film. A pattern layer is provided on one side of the base layer that is away from the light-shielding layer.

[0012] Furthermore, in one embodiment, the step of preparing a transfer mold having the predetermined protrusions is, The process includes providing a plurality of the aforementioned protrusions and obtaining a transfer mold having the protrusions by machining, based on a predetermined arrangement and size of the protrusions, which includes one or more of the following: an equilateral triangle grid arrangement, a square grid arrangement, or a honeycomb grid arrangement.

[0013] Furthermore, in one embodiment, by printing a decorative layer on one side of the light-shielding layer away from the transparent carrier film, other than the first through-hole, using the planar printing process, the decorative layer has a second through-hole that communicates with the first through-hole at a position corresponding to the first through-hole, and the second through-hole communicates with the recess through the first through-hole to form a light-transmitting hole, after the step of obtaining a multilayer structure, The further step includes providing a filling layer on one side of the decorative layer away from the transparent carrier film and within the light-transmitting holes, wherein the filling layer sufficiently fills the light-transmitting holes.

[0014] Furthermore, in one embodiment, a filling layer is provided on one side of the decorative layer away from the transparent carrier film and within the light-transmitting holes, and after the step of the filling layer sufficiently filling the light-transmitting holes, The steps include: providing an adhesive layer on one side of the filling layer that is away from the transparent carrier film; The steps include providing the multilayer light source on one side of the transparent carrier film away from the adhesive layer, or The steps include: providing an adhesive layer on one side of the transparent carrier film that is away from the filling layer; The further step includes providing the multilayer light source on one side of the adhesive layer that is away from the filling layer.

[0015] The present invention further provides a method for manufacturing a multilayer structure having light transmittance and opacity, and the manufacturing method is: The steps include preparing a transparent carrier film and applying a transparent liquid coating to one side of the transparent carrier film, The process involves preparing a transfer mold having pre-set protrusions, pressing the protrusions of the transfer mold onto the liquid coating, curing the liquid coating, and then peeling off the transfer mold after curing to form recesses in the cured liquid coating that conform to the shape of the protrusions, thereby obtaining a recessed transparent layer. A planar printing process is used to print a decorative layer on one side of the recessed transparent layer away from the transparent carrier film, excluding the recess, thereby creating a second through-hole in the decorative layer at a position corresponding to the recess that communicates with the recess. By means of a lithographic process, a light-shielding layer is printed on the surface of the decorative layer on the side away from the transparent carrier film other than the second through-hole, so that a first through-hole communicating with the second through-hole is formed at a position corresponding to the second through-hole of the light-shielding layer, and the first through-hole communicates with the recess through the second through-hole to form a light-transmitting hole, including the step of obtaining a multilayer structure.

[0016] Furthermore, in one embodiment, the decorative layer includes a pattern layer and a base layer, a pattern layer is provided on the side of the recess perspective layer away from the transparent carrier film, a base layer is provided on the side of the pattern layer away from the recess perspective layer.

[0017] Furthermore, in one embodiment, by means of the lithographic process, a light-shielding layer is printed on the surface of the decorative layer on the side away from the transparent carrier film other than the second through-hole, so that a first through-hole communicating with the second through-hole is formed at a position corresponding to the second through-hole of the light-shielding layer, and the first through-hole communicates with the recess through the second through-hole to form a light-transmitting hole. After the step of obtaining a multilayer structure, a filling layer is provided on the side of the light-shielding layer away from the transparent carrier film and inside the light-transmitting hole, further including the step of the filling layer sufficiently filling the inside of the light-transmitting hole.

[0018] Furthermore, in one embodiment, after the step of providing a filling layer on the side of the light-shielding layer away from the transparent carrier film and inside the light-transmitting hole, and the filling layer sufficiently filling the inside of the light-transmitting hole, the step of providing an adhesive layer on the side of the transparent carrier film away from the filling layer; the step of providing a light-emitting source of the multilayer structure on the side of the filling layer away from the adhesive layer, is further included.

[0019] Furthermore, in one embodiment, after the step of providing a filling layer on the side of the light-shielding layer away from the transparent carrier film and inside the light-transmitting hole, and the filling layer sufficiently filling the inside of the light-transmitting hole, Providing a surface treatment layer on one side of the transparent carrier film away from the filling layer; Providing an adhesive layer on one side of the filling layer away from the surface treatment layer; Further comprising providing the light-emitting source of the multilayer structure on one side of the adhesive layer away from the filling layer.

[0020] The present invention further provides a multilayer structure having light transmissibility and non-visibility, and the multilayer structure is manufactured using the manufacturing method.

[0021] The present invention further provides a multilayer structure having light transmissibility and non-visibility, and the multilayer structure is manufactured using the manufacturing method.

Advantages of the Invention

[0022] In the technical solution provided by the present invention, a transparent liquid coating is applied to a transparent carrier film, and then the protrusions of a transfer mold having protrusions arranged in a preset array are pressed against the liquid coating. After that, the liquid coating is cured, and after peeling the transfer mold from the cured liquid coating, recesses having the same arrangement, size, and depth as the protrusions are formed to obtain a recess perspective layer. Due to these recesses, the surface of the recess perspective layer having the recesses becomes non-flat. At the same time, a light-shielding layer is printed on the surface of the recess perspective layer having the recesses by a lithographic printing process.When printing, the ink of the light-shielding layer contacts the plane of the recess perspective layer, but the ink does not contact the recesses, and even when pressure is applied, it only acts on the plane, and the recesses do not receive the acting force. Therefore, a coating layer is printed on the plane of the recess perspective layer, the recesses are not filled and coated with ink, and first through-holes communicating with the recesses are formed at positions corresponding to the recesses of the coating layer. Using the same operating principle, a decorative layer is printed on the coating layer, and second through-holes communicating with the first through-holes are formed at positions corresponding to the first through-holes of the decorative layer. The recesses, the first through-holes, and the second through-holes form light transmission holes to obtain a multilayer structure. It is realized that the manufacturing process of the multilayer structure having light transmissibility and non-visibility is simple, the cost is low, the efficiency is high, and the light transmission effect and display effect of the multilayer structure are good.

Brief Description of the Drawings

[0023] One or more embodiments are illustrated by corresponding drawings, and these illustrative descriptions are not limiting to the embodiments. Elements having the same reference numerals in the drawings are represented as similar elements. Unless otherwise specified, the figures in the drawings are not limited to a specific scale.

[0024] [Figure 1] This is a schematic diagram of the first embodiment of a method for manufacturing a multilayer structure having light transmittance and opacity according to an embodiment of the present invention. [Figure 2] This is a schematic diagram of a second embodiment of a method for manufacturing a multilayer structure having light transmittance and opacity according to an embodiment of the present invention. [Figure 3] This is a schematic diagram of a multilayer structure having light transmittance and opacity in a first embodiment of the present invention. [Figure 4] This is a schematic diagram of a multilayer structure having light transmittance and opacity in a second embodiment of the present invention. [Figure 5] This is a schematic diagram of a third embodiment of a method for manufacturing a multilayer structure having light transmittance and opacity according to an embodiment of the present invention. [Figure 6] This is a schematic diagram of a multilayer structure having light transmittance and opacity in a third embodiment of the present invention. [Figure 7] This is a schematic diagram of a multilayer structure having light transmittance and opacity in a fourth embodiment of the present invention. [Modes for carrying out the invention]

[0025] To facilitate understanding of the present invention, the invention will be described in more detail below with reference to the drawings and specific embodiments. Where an element is described as "fixed" to another element, that element may be directly present in the other element, or one or more intervening elements may be present between them. Where an element is described as "connected" to another element, that element may be directly connected to the other element, or one or more intervening elements may be present between them. The terms “vertical,” “horizontal,” “left,” “right,” “inside,” “outside,” and similar expressions used herein are for illustrative purposes only. In the description of the present invention, the terms “first,” “second,” etc., are used for illustrative purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features described. Thus, unless otherwise specified, features limited by “first,” “second,” etc., may explicitly or implicitly include one or more such features, and “multiple” means two or more. The term “includes” and any variation thereof means non-exclusive inclusion, which may include or add one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0026] Furthermore, unless otherwise specifically defined and limited, the terms “attachment,” “connection,” and “connection” should be understood broadly, for example, as fixed connections, removable connections, or integral connections; as mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal communication between two elements. All technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention pertains. The terms used in the specification of the present invention are merely for the purpose of describing specific embodiments and do not limit the present invention. The terms “and / or” used herein include any and all combinations of one or more of the related enumerated items.

[0027] Furthermore, the technical features of the different embodiments of the present invention described below can be combined with each other, as long as they do not contradict each other.

[0028] To facilitate understanding, the specific processes of the embodiments of the present invention will be described below, and with reference to Figure 1, the first embodiment of the method for manufacturing a multilayer structure having light transmittance and opacity in the embodiments of the present invention includes S1 to S4.

[0029] S1: Prepare a transparent carrier film and apply a transparent liquid coating to one side of the transparent carrier film.

[0030] In this step, the transparent carrier film is a highly transparent and decorative thin film material, which may be PET (polyethylene terephthalate plastic) or PC (polycarbonate), and the transparent carrier film is used to support and carry the liquid coating. First, a light-transmitting carrier film is prepared, and then a transparent liquid coating is applied to the surface of the transparent carrier film. Of course, by using release technology, the liquid coating is applied to the release film, and once the subsequent process is complete, a multilayer structure is formed. The release film is then peeled off, and the multilayer structure removed from the release film is transferred to metal, plastic, glass, glass fiber, carbon fiber, aramid fiber, bamboo fiber, wood, leather, PU leather, or silicone leather by a transfer process, thereby broadening the range of substrates to which the multilayer structure can be applied.

[0031] S2: A transfer mold having pre-set protrusions is prepared, the protrusions of the transfer mold are pressed onto the liquid coating, the liquid coating is cured, and after curing the transfer mold is peeled off, thereby forming recesses in the cured liquid coating that conform to the shape of the protrusions, and obtaining a recessed transparent layer.

[0032] In this step, the arrangement method, shape, size, and depth of the projections of the transfer mold can be designed in a one-to-one correspondence according to the actual display effect. First, it is decided whether to attach it to a screen or to an LED lamp light source. Next, the specific arrangement method, size, shape, and depth of the projections are determined based on the final display effect. After determination, the projections are created by UV lithography or machining techniques to form a transfer mold with projections. Then, the projections of the transfer mold are pressed into the liquid coating. Since the liquid coating is in a liquid state, the transfer mold can be easily pressed into the liquid coating. After pressing to a predetermined depth, the liquid coating is baked and cured by UV baking. After the liquid coating has cured, the transfer mold is peeled off the liquid coating. After peeling, recesses are formed in the cured liquid coating. The arrangement method, shape, size, and depth of the recesses all match the projections; that is, the recesses and projections form a matching concave-convex structure, and a recessed transparent layer is obtained. By transferring the arrangement, shape, size, and depth of the protrusions of the transfer mold to the recessed transparent layer, the recessed transparent layer has the same arrangement, shape, size, and depth of recesses, resulting in a simpler and more efficient process, and allowing for optimization of the protrusion design according to the actual situation, thus providing a better display effect.

[0033] S3: By a planar printing process, a light-shielding layer is printed on one side of the recessed transparent layer that is away from the transparent carrier film, excluding the recess, thereby providing the light-shielding layer with a first through-hole communicating with the recess at a position corresponding to the recess.

[0034] In this step, the principle of lithographic printing is to utilize the property that water and oil do not mix to establish an oleophilic and hydrophobic graphic area and a hydrophilic and oleophilic blank area on the surface of the printing plate, and to print using the principle that oil and water repel each other. The lithographic printing process has advantages such as high printing speed, high print quality, and low printing cost. The light-shielding layer is used to prevent light transmission, and the light-shielding layer may be black ink or white ink, and the transmittance is further reduced by increasing the thickness with multiple printings. In the lithographic printing process, after the surface of the recessed transparent layer away from the transparent carrier film is brought into contact with the blanket, the ink is transferred from the blanket to the surface of the recessed transparent layer away from the transparent carrier film by pressure. As a result, after the surface of the recessed transparent layer with recesses comes into contact with the blanket, the flat parts come into contact and receive pressure, but the recesses do not come into contact and do not receive pressure, so the recesses are not covered and filled with ink, and at the same time the position of the light-shielding layer corresponding to the recesses is not covered with ink, so a first through hole communicating with the recesses is formed.

[0035] Specifically, the light-shielding layer is manufactured through the following six steps of the planar printing process: Plate making: Pre-set graphic information is transferred to the printing plate using techniques such as photography and electronic color separation. The printing plate is usually made of materials such as aluminum or zinc plates, and after surface treatment, it forms oleophilic and hydrophobic graphic areas and hydrophilic and oleophobic blank areas. Inking: Ink is applied to the graphic areas of the printing plate, and the ink is absorbed into the graphic areas. Wetting: The blank areas of the printing plate are wetted with a wetting solution, and a water film is formed in the blank areas. Transfer: A blanket is placed over the printing plate, the blanket is brought into contact with the printing plate, and the ink is transferred from the printing plate to the blanket. Printing: The ink-bearing side of the blanket is brought into contact with the surface away from the transparent carrier film of the recessed transparent layer, and the ink is transferred from the blanket to the surface of the recessed transparent layer by the action of pressure, completing the graphic printing of the light-shielding layer. Drying: The ink on the recessed transparent layer is dried and fixed to the recessed transparent layer, forming the light-shielding layer. By printing a light-blocking layer using a planar printing process, printing speed is increased, production efficiency is improved, print quality is high, and printing costs are low.

[0036] Here, the distance between two adjacent recesses is 0.05 to 0.2 mm.

[0037] S4: By a planar printing process, a decorative layer is printed on one side of the light-shielding layer, away from the transparent carrier film, excluding the first through-hole, thereby obtaining a multilayer structure in which the decorative layer has a second through-hole in a position corresponding to the first through-hole and communicating with the first through-hole, and the second through-hole communicates with the recess through the first through-hole to form a light-transmitting hole.

[0038] In this step, the decorative layer is manufactured by the following six steps of the lithographic printing process: Plate making: Pre-set graphic information is transferred to the printing plate using techniques such as photography and electronic color separation. The printing plate is usually made of materials such as aluminum or zinc plates, and after surface treatment, it forms oleophilic and hydrophobic graphic areas and hydrophilic and oleophobic blank areas. Inking: Ink is applied to the graphic areas of the printing plate, and the ink is absorbed into the graphic areas. Wetting: The blank areas of the printing plate are wetted with a wetting solution, and a water film is formed in the blank areas. Transfer: A blanket is placed over the printing plate, the blanket is brought into contact with the printing plate, and the ink is transferred from the printing plate to the blanket. Printing: The ink-bearing side of the blanket is brought into contact with the surface away from the transparent carrier film of the light-shielding layer, and the ink is transferred from the blanket to the surface of the light-shielding layer by the action of pressure, completing the graphic printing of the decorative layer. Drying: The ink on the light-shielding layer is dried and fixed to the light-shielding layer, forming the decorative layer.

[0039] Because the position corresponding to the first through-hole in the light-shielding layer of the decorative layer is a recessed area, during ink transfer, the recessed area does not come into contact with the ink and is not subjected to any force. As a result, the position corresponding to the first through-hole in the decorative layer is not covered with ink, a second through-hole communicating with the first through-hole is formed. The recess, the first through-hole, and the second through-hole communicate to form a light-transmitting hole, and when the power is turned on, light can pass through the light-transmitting hole. Printing the decorative layer using a planar printing process results in a faster printing speed, improved production efficiency, high print quality, and low printing costs.

[0040] Here, the diameter range of the light-transmitting holes is 0.01 to 0.1 mm. Because the light-transmitting holes are small, in the absence of a light source, the light-opaque areas of the pattern on the decorative layer are reflected to the human eye under the illumination of light rays. Due to the small size of the light-transmitting holes, these holes cannot be seen with the naked eye, and the entire pattern on the decorative layer can be seen. In the presence of a light source, light passes through the light-transmitting holes, allowing the content displayed on the light source or screen to be seen, while the pattern on the decorative layer is not visible because it does not transmit light, thus achieving an effect that combines light transmission and opacity.

[0041] In this embodiment, by transferring the arrangement, shape, size, and depth of the protrusions of the transfer mold to the recessed transparent layer by transfer, the recessed transparent layer has recesses with the same arrangement, shape, size, and depth. The process is simple, low-cost, and highly efficient, and the design of the protrusions can be optimized according to the actual situation, resulting in a better light transmission effect in the recesses and a better display effect. A light-shielding layer and a decorative layer are sequentially provided on the recessed light-transmitting layer by a lithographic printing process. Since the ink does not come into contact with the recesses during printing, the recesses are not covered and filled with ink. A first through-hole communicating with the recesses is formed at a position corresponding to the recesses in the light-shielding layer, and a second through-hole communicating with the first through-hole is formed at a position corresponding to the first through-hole in the decorative layer, forming light-transmitting holes. As a result, the multilayer structure allows the contents of the light source or display screen to be seen when the light source is lit, and when the light source is not lit, the light-transmitting holes do not transmit light, at which time the pattern on the decorative layer is displayed. The lithographic printing process is low-cost, highly efficient, and simple.

[0042] Referring to Figure 2, the embodiments of the present invention further disclose a second embodiment of a method for manufacturing a multilayer structure having light transmittance and opacity.

[0043] S10: Prepare a transparent carrier film and apply a transparent liquid coating to one side of the transparent carrier film.

[0044] In this step, the explanation of step S10 above will be based on S1 of the first embodiment, and the explanation will be omitted in this step.

[0045] S11: A transfer mold having pre-set protrusions is prepared, the protrusions of the transfer mold are pressed onto the liquid coating, the liquid coating is cured, and after curing the transfer mold is peeled off to form recesses in the cured liquid coating that conform to the shape of the protrusions, thereby obtaining a recessed transparent layer.

[0046] In this step, the explanation of step S11 above will be omitted in this step, as it will refer to S2 of the first embodiment.

[0047] The step in step S11 of preparing a transfer mold having a predetermined protrusion is, The process includes providing a plurality of the aforementioned protrusions and obtaining a transfer mold having the protrusions by machining, based on a predetermined arrangement and size of the protrusions, which includes one or more of the following: an equilateral triangle grid arrangement, a square grid arrangement, or a honeycomb grid arrangement.

[0048] In this step, the number of protrusions is determined according to the light transmission requirements of the multilayer structure, and the specific arrangement method, size, shape, and depth are determined according to the light source of the multilayer structure, such as an equilateral triangular grid arrangement, a square grid arrangement, or a honeycomb grid arrangement, so that the light transmission effect of the manufactured recess is optimized for the light source and the optimal display effect is obtained. The protrusions can be manufactured by UV lithography or machining. In this application, since the recess is formed in the recessed transparent layer by a transfer process, the arrangement method, size, shape, and depth of the recess are determined by the arrangement method, size, shape, and depth of the protrusions. Here, the light source of the multilayer structure may be a screen or an LED light source.

[0049] The arrangement of light-transmitting holes is designed in combination with the arrangement of multilayer light sources to reduce the occurrence of moiré or interference and to improve the illumination effect or screen display effect. Therefore, in the actual production process, the arrangement can be according to the actual arrangement of multilayer light sources and is not limited to equilateral triangle grid arrangement, square grid arrangement, or honeycomb grid arrangement.

[0050] At the same time, the actual transmittance may be changed by adjusting the arrangement of the sizes of the light-transmitting array holes within a certain range as needed, and the light transmission effect may be changed by increasing the optical texture on the inner surface of the recesses of the light-transmitting holes, thereby making the light transmission effect of the light-transmitting holes of this application superior to the light transmission effect of conventional light-transmitting holes processed by punching or screen printing.

[0051] When the multilayer light source is an LED light source, the arrangement, size, and depth of the recesses may be designed using the principle of a light guide plate, so that the light rays are uniformly diffused and the light guide plate function is achieved.

[0052] Specifically, the light guide plate utilizes optical-grade acrylic / PC sheet material, employing high-tech materials with extremely high reflectivity and no light absorption. Light guide points are printed on the bottom surface of the optical-grade acrylic sheet material using laser engraving, V-shaped cross grid engraving, and UV screen printing technologies. The principle primarily utilizes the principle of total internal reflection and the theorem of light scattering at the interface of a transparent plate to deflect light incident from the edge by 90° and emit it from the front, thereby exhibiting functional light guiding. When light rays irradiate each light guide point, the reflected light diffuses at various angles, disrupting the reflection conditions and emitting from the front of the light guide plate. Various light guide points with different densities and sizes make it possible to make the light guide plate emit light uniformly. The reflective sheet reflects the light exposed from the bottom surface back to the light guide plate, playing a role in increasing the efficiency of light utilization. For the same area of ​​luminous intensity, the luminous efficiency is higher and power consumption is lower. When designing the recess array, an optical texture is designed for the recesses, which diffuses the light rays at each angle after the incident light passes through the texture within the recessed points, making the light rays softer and more uniform.

[0053] S12: Prepare a printing plate with pre-set graphic information, and apply ink to one side of the printing plate on which the graphic information is provided.

[0054] Step S12 is 1) A step of transferring the pre-set graphic information, which includes one or more patterns or characters, to a printing plate having an oil-lipophilic and hydrophobic graphic area and a hydrophilic and oil-repellent blank area by photograph or electronic color separation, 2) The steps of applying ink to the graphic area of ​​the printing plate and allowing the ink to be absorbed by the graphic area, 3) The process includes the step of wetting the blank areas of the printing plate with a wetting solution to form a water film in the blank areas.

[0055] In this step, first, the style of the graphic to be printed is determined. The graphic style may be a pattern only, or a combination of a pattern and text. Next, the designed graphic style is transferred to the printing plate by photography or electronic color separation. The printing plate is usually made of a material such as an aluminum plate or a zinc plate, and after surface treatment, an oleophilic and hydrophobic graphic area and a hydrophilic and oleophobic blank area are formed. Then, ink is applied to the printed graphic area, allowing the ink to be absorbed into the graphic area. The blank area of ​​the printing plate is then wetted with a wetting solution, forming a water film in the blank area, and printing is then performed based on the principle that oil and water repel each other.

[0056] S13: The ink is transferred to the blanket.

[0057] In this step, the ink is transferred from the printing plate to the blanket through contact between the blanket and the ink on the printing plate. The operation is simple and low-cost.

[0058] Step S13 is The process includes the step of covering the ink surface of the printing plate with a blanket, thereby transferring the ink located on the printing plate from the printing plate to the blanket.

[0059] In this step, the blanket is placed over the ink surface of the printing plate, bringing the blanket into contact with the ink on the printing plate and transferring the ink from the printing plate to the blanket. This method is simple to operate and low-cost.

[0060] S14: The side of the blanket having the ink is covered with the side of the recessed transparent layer away from the transparent carrier film, and pressure is applied to transfer the ink from the blanket to the surface of the recessed transparent layer other than the recess, thereby forming the light-shielding layer having the first through-hole.

[0061] In this step, the ink-bearing surface of the blanket is covered with a surface away from the transparent carrier film of the recessed transparent layer. Since the surface away from the transparent carrier film of the recessed transparent layer is the surface with the recesses of the recessed transparent layer, the ink comes into direct contact with the plane of the surface with the recesses of the recessed transparent layer, but not with the recesses themselves. Because the recesses are lower than the plane, when pressure is applied to the blanket, the pressure acts on the plane of the recessed transparent layer, transferring the ink from the blanket to the plane of the recessed transparent layer and forming a light-shielding layer. Because the pressure is lower than the plane, the pressure cannot act on the recesses, and therefore the recesses are not filled and covered with ink, and a first through-hole is formed at the position corresponding to the recesses of the light-shielding layer. In lithographic printing, after bringing the printing paper and blanket into contact, pressure is used to transfer the ink from the blanket to the printing paper. Therefore, the method of providing recesses on the printing surface so that the positions of the recesses are not filled with ink and ultimately form light-transmitting holes is not only easy to operate and low in cost, but also highly efficient in terms of production.

[0062] S15: By a planar printing process, a decorative layer is printed on one side of the light-shielding layer away from the transparent carrier film, excluding the first through-hole, thereby having a second through-hole in the decorative layer at a position corresponding to the first through-hole and communicating with the first through-hole, and the second through-hole communicating with the recess through the first through-hole to form a light-transmitting hole.

[0063] In this step, the explanation of step S15 above will be omitted in this step, as it will refer to S4 of the first embodiment.

[0064] Step S15 is The decorative layer includes a pattern layer and a base layer, and the base layer is provided on one side of the light-shielding layer that is away from the transparent carrier film.

[0065] A pattern layer is provided on one side of the base layer that is away from the light-shielding layer.

[0066] In this step, since the color of the lithographically printed pattern layer is relatively transparent, a white underlayer needs to be printed to enhance and reflect the color of the pattern layer and to make the pattern more clearly visible. The decorative layer includes the pattern layer and the underlayer. The lithographic printing process prints the underlayer on the surface away from the transparent carrier film of the light-blocking layer, and the underlayer is used to enhance and reflect the color of the pattern layer. The lithographic printing process also prints the pattern layer on the surface of the underlayer away from the light-blocking layer, and the pattern layer makes the multilayer structure look richer and more vibrant.

[0067] S16: A filling layer is provided on one side of the decorative layer away from the transparent carrier film and within the light-transmitting holes, so that the filling layer sufficiently fills the light-transmitting holes.

[0068] In this step, a filler layer is formed on the surface and within the light-transmitting pores of the decorative layer, away from the transparent carrier film, by a transfer process or flow coating process. The filler layer is a transparent or translucent material such as UV adhesive, epoxy resin, polyurethane, or acrylate. After filling and flattening, it not only makes the multilayer structure flatter and more aesthetically pleasing, but also protects the decorative layer from damage. The filler layer may or may not be filled depending on the actual situation.

[0069] S17: An adhesive layer is provided on one side of the filling layer that is away from the transparent carrier film.

[0070] In this step, the adhesive layer may be a back adhesive, and the back adhesive may be a UV adhesive or a transparent material with adhesive properties. The back adhesive is applied to the surface of the filling layer that is away from the transparent carrier film, and the back adhesive is used to attach a multilayer light source, glass, or transparent injection molded product.

[0071] S18: The multilayer light source is provided on one side of the transparent carrier film that is away from the adhesive layer.

[0072] In this step, a glass or transparent injection-molded product is attached to the adhesive layer, and then a multilayer light source is provided on one side of the transparent carrier film away from the adhesive layer. This causes the multilayer structure to emit light, and the light is emitted through the light-transmitting holes, allowing the user to see the light source or the content displayed on the screen. The multilayer light source can be provided on the multilayer structure by means other than attaching it to the multilayer structure via the adhesive layer, and attachment via the adhesive layer is not necessarily required. For example, when a transparent frame is attached to one side of the adhesive layer away from the transparent carrier film, the transparent frame and the multilayer light source are in an assembly relationship, and in this case, it is not necessary to provide an adhesive layer between the multilayer light source and the transparent carrier film.

[0073] As shown in Figure 3, Figure 3 is a multilayer structure 100 manufactured by the manufacturing method of this embodiment. Specifically, the multilayer structure 100 includes a transparent carrier film 10, a recessed transparent layer 20, a light-shielding layer 40, a base layer 303, and a pattern layer 302, which are laminated in order from bottom to top. The recessed transparent layer 20 is provided with a plurality of recesses 201 arranged in an array, and a first through-hole 401 communicating with the recesses 201 is provided in the light-shielding layer 40 at a position corresponding to the recesses 201, and a second through-hole 301 communicating with the first through-hole 401 is provided in the base layer 303 and the pattern layer 302 at a position corresponding to the first through-hole 401, and the recesses 201, the first through-hole 401, and the second through-hole 301 communicate with each other in order to form a light-transmitting hole 80. The multilayer structure 100 further includes a filling layer 50, an adhesive layer 60, a multilayer light source, glass, or a transparent injection-molded product, and the filling layer 5 0 is provided on one side of the pattern layer 302 away from the transparent carrier film 10, the filling layer 50 sufficiently fills the light-transmitting holes 80, the adhesive layer 60 is provided on one side of the filling layer 50 away from the transparent carrier film 10, the glass or transparent injection-molded product is provided on one side of the adhesive layer away from the transparent carrier film 10, and the multilayer light source is provided on one side of the transparent carrier film 10 away from the adhesive layer. Here, the base layer 303 and the pattern layer 302 are combined with the decorative layer 30. In this embodiment, the multilayer structure 100 may also choose not to fill the filling layer 50 depending on the actual situation, as the diameter of the light-transmitting holes 80 is small and cannot be seen with the human eye, so the adhesive layer 60 can be firmly attached even without filling the filling layer 50.

[0074] In another embodiment, as shown in Figure 4, step S17 can be set to "provide an adhesive layer on one side of the transparent carrier film away from the filling layer," and step S18 can be set to "provide the multilayer light source on one side of the adhesive layer away from the filling layer."

[0075] In this step, the adhesive layer may be a back adhesive, and the back adhesive may be a UV adhesive or a transparent material with adhesive properties. The adhesive layer is attached to the surface of the transparent carrier film away from the filling layer, and then a multilayer light source is attached to the adhesive layer. As a result, the multilayer structure emits light, and light is emitted through the light-transmitting holes, allowing the user to see the light source or the content displayed on the screen.

[0076] Figure 4 shows a multilayer structure 100 manufactured by the manufacturing method of this embodiment. Specifically, the multilayer structure 100 includes a multilayer light source, a back adhesive, a transparent carrier film 10, a recessed transparent layer 20, a light-shielding layer 40, a base layer 303, and a pattern layer 302, which are stacked in order from bottom to top. The recessed transparent layer 20 is provided with a plurality of recesses 201 arranged in an array, and a first through-hole 401 is provided in the light-shielding layer 40 at a position corresponding to the recesses 201, communicating with the recesses 201, and the base layer 303 and the pattern layer 302 are also provided at positions corresponding to the first through-hole 401, communicating with the first through-hole 401. A second through-hole 301 is provided, and the recess 201, the first through-hole 401 and the second through-hole 301 communicate with each other in sequence to form a light-transmitting hole 80. The multilayer structure 100 further includes a filling layer 50, which is provided on one side of the pattern layer 302 away from the transparent carrier film 10, and the filling layer 50 sufficiently fills the light-transmitting hole 80. Here, the base layer 303 and the pattern layer 302 are combined with the decorative layer 30. In this embodiment, the multilayer structure can be configured to not fill the light-transmitting hole depending on the actual situation. Because the diameter of the light-transmitting hole is small and indistinguishable to the human eye, the adhesive layer can be firmly attached even without filling the light-transmitting hole.

[0077] In this embodiment, by transferring the arrangement, shape, size, and depth of the protrusions of the transfer mold to the recessed transparent layer by transfer, the recessed transparent layer has recesses with the same arrangement, shape, size, and depth. The process is simple, low-cost, and highly efficient, and the design of the protrusions can be optimized according to the actual situation, resulting in a better light transmission effect in the recesses and a better display effect. The lithographic printing process sequentially provides a light-shielding layer and a decorative layer on the recessed light-transmitting layer. Since the ink does not come into contact with the recesses during printing, the recesses are not covered and filled with ink. A first through-hole communicating with the recesses is formed at a position corresponding to the recesses in the light-shielding layer, and a second through-hole communicating with the first through-hole is formed at a position corresponding to the first through-hole in the decorative layer, forming light-transmitting holes. As a result, the multilayer structure allows the contents of the light source or display screen to be seen when the light source is lit, and when the light source is not lit, the light-transmitting holes do not transmit light, displaying the pattern on the decorative layer. The lithographic printing process is low-cost, highly efficient, and simple.

[0078] Referring to Figure 5, the embodiments of the present invention further disclose a third embodiment of a method for manufacturing a multilayer structure having light transmittance and opacity.

[0079] S20: Prepare a transparent carrier film and apply a transparent liquid coating to one side of the transparent carrier film.

[0080] In this step, the explanation of step S20 above will be based on S1 of the first embodiment, and the explanation will be omitted in this step.

[0081] S21: A transfer mold having pre-set protrusions is prepared, the protrusions of the transfer mold are pressed onto the liquid coating, the liquid coating is cured, and after curing the transfer mold is peeled off to form recesses in the cured liquid coating that conform to the shape of the protrusions, thereby obtaining a recessed transparent layer.

[0082] In this step, the explanation of step S21 above will be omitted in this step, as it will refer to S2 of the first embodiment.

[0083] S22: By a planar printing process, a decorative layer is printed on one side of the recessed transparent layer away from the transparent carrier film, excluding the recess, thereby providing the decorative layer with a second through-hole communicating with the recess at a position corresponding to the recess.

[0084] In this step, the decorative layer is manufactured by the following six steps of the lithographic printing process: Plate making: Pre-set graphic information is transferred to the printing plate using techniques such as photography and electronic color separation. The printing plate is usually made of a material such as an aluminum plate or a zinc plate, and after surface treatment, it forms an oleophilic and hydrophobic graphic area and a hydrophilic and oleophobic blank area. Inking: Ink is applied to the graphic area of ​​the printing plate, and the ink is absorbed into the graphic area. Wetting: The blank area of ​​the printing plate is wetted with a wetting solution, and a water film is formed in the blank area. Transfer: A blanket is placed over the printing plate, the blanket is brought into contact with the printing plate, and the ink is transferred from the printing plate to the blanket. Printing: The ink-bearing side of the blanket is brought into contact with the surface of the recessed transparent layer away from the transparent carrier film, and the ink is transferred from the blanket to the plane of the recessed surface of the recessed transparent layer by the action of pressure, completing the graphic printing of the decorative layer. Drying: The ink on the recessed transparent layer is dried and fixed to the recessed transparent layer, forming the decorative layer.

[0085] Because the recesses in the decorative layer correspond to the recessed areas of the transparent layer, during ink transfer, the recessed areas do not come into contact with the ink and are not subjected to any force. As a result, the areas corresponding to the recesses in the decorative layer are not covered with ink, and a second through-hole communicating with the recess is formed. Printing the decorative layer using a planar printing process results in faster printing speeds, improved production efficiency, high print quality, and low printing costs.

[0086] Step S22 is, 1) The decorative layer includes a pattern layer and a base layer, and the step of providing the pattern layer on one side of the recessed transparent layer away from the transparent carrier film, 2) The step of providing a base layer on one side of the pattern layer that is away from the recessed transparent layer.

[0087] In this step, since the color of the lithographically printed pattern layer is relatively transparent, a white underlayer needs to be printed to enhance and reflect the color of the pattern layer and make the pattern more clearly visible. The decorative layer includes the pattern layer and the underlayer. The lithographic printing process prints the pattern layer on the surface away from the transparent carrier film of the recessed transparent layer, and the pattern layer makes the multilayer structure look richer and more vibrant. The lithographic printing process also prints the underlayer on one side of the pattern layer away from the recessed transparent layer, and the underlayer is used to enhance and reflect the color of the pattern layer.

[0088] S23: By a planar printing process, a light-shielding layer is printed on one side of the decorative layer away from the transparent carrier film, excluding the second through-hole, thereby having a first through-hole in a position corresponding to the second through-hole that communicates with the second through-hole, and the first through-hole communicating with the recess via the second through-hole to form a light-transmitting hole.

[0089] In this step, the light-shielding layer is manufactured by the following six steps of the planar printing process: Plate making: Pre-set graphic information is transferred to the printing plate using techniques such as photography and electronic color separation. The printing plate is usually made of a material such as an aluminum plate or a zinc plate, and after surface treatment, it forms an oleophilic and hydrophobic graphic area and a hydrophilic and oleophobic blank area. Inking: Ink is applied to the graphic area of ​​the printing plate, and the ink is absorbed into the graphic area. Wetting: The blank area of ​​the printing plate is wetted with a wetting solution, and a water film is formed in the blank area. Transfer: A blanket is placed over the printing plate, the blanket is brought into contact with the printing plate, and the ink is transferred from the printing plate to the blanket. Printing: The ink-bearing side of the blanket is brought into contact with the surface of the decorative layer away from the transparent carrier film, and the ink is transferred from the blanket to the surface of the decorative layer by the action of pressure, completing the graphic printing of the light-shielding layer. Drying: The ink on the decorative layer is dried and fixed to the decorative layer, forming the light-shielding layer. Printing the light-shielding layer using a planar printing process results in faster printing speeds, improved production efficiency, higher print quality, and lower printing costs. Because the second through-hole, which corresponds to the decorative layer of the light-shielding layer, is located in a recessed area, the recessed area does not come into contact with the ink during ink transfer and is not subjected to any force. As a result, the area corresponding to the first through-hole of the light-shielding layer is not covered with ink, forming a first through-hole that communicates with the second through-hole. The recess, the first through-hole, and the second through-hole communicate to form a light-transmitting hole, and when the power is turned on, light can pass through the light-transmitting hole.

[0090] S24: A filling layer is provided on one side of the light-shielding layer away from the transparent carrier film and within the light-transmitting holes, so that the filling layer sufficiently fills the light-transmitting holes.

[0091] In this step, the description of step S24 above will be omitted in this step, as it refers to S16 of the first embodiment. The filling layer can be left blank depending on the actual situation, and because the diameter of the light-transmitting holes is small and cannot be seen with the human eye, the adhesive layer can be firmly attached even without filling the layer.

[0092] S25: An adhesive layer is provided on one side of the transparent carrier film that is away from the filling layer.

[0093] In this step, the adhesive layer may be a back adhesive, and the back adhesive is applied to the surface of the transparent carrier film away from the filling layer, and the back adhesive is used to attach a multilayer light source, glass, or transparent injection molded product.

[0094] S26: The multilayer light source is provided on one side of the filling layer that is away from the adhesive layer.

[0095] In this step, a glass or transparent injection-molded product is attached to the adhesive layer, and then a multilayer light source is provided on one side of the filling layer away from the adhesive layer. This causes the multilayer structure to emit light, which is emitted through light-transmitting holes, allowing the user to see the light source or the content displayed on the screen. The multilayer light source can be provided on the multilayer structure by means other than being attached to the multilayer structure via the adhesive layer, and does not necessarily require attachment via the adhesive layer. For example, when a transparent frame is attached to one side of the adhesive layer away from the transparent carrier film, the transparent frame and the multilayer light source are in an assembly relationship, and in this case, it is not necessary to provide an adhesive layer between the multilayer light source and the transparent carrier film.

[0096] As shown in Figure 6, Figure 6 is a multilayer structure 100 manufactured by the manufacturing method of this embodiment. Specifically, the multilayer structure 100 includes a multilayer light source, a filling layer 50, a light-shielding layer 40, a base layer 303, a pattern layer 302, a recessed transparency layer 20, a transparent carrier film 10, and an adhesive layer 60, which are stacked in order from top to bottom. The recessed transparency layer 20 is provided with a plurality of recesses 201 arranged in an array, and second through-holes 301 communicating with the recesses 201 are provided at positions corresponding to the recesses 201 in the pattern layer 302 and the base layer 303, and first through-holes 401 communicating with the second through-holes 301 are provided at positions corresponding to the second through-holes 301 in the light-shielding layer 40, and the recesses 201, the first through-holes 401 and the second through-holes 301 communicate with each other in order to form light-transmitting holes 80, where the base layer 303 and the pattern layer 302 are combined with the decorative layer 30.

[0097] In another embodiment, as shown in Figure 7, step S25 can be set to "provide a surface treatment layer on one side of the transparent carrier film away from the filling layer."

[0098] In this step, a flow coating process is used to flow-coate a surface treatment layer onto the surface of the transparent carrier film away from the filling layer. The surface treatment layer improves the hardness and wear resistance of the multilayer structure, and glass or a transparent injection-molded product may be provided on the surface of the surface treatment layer away from the transparent carrier film.

[0099] Step S26 is set to "provide an adhesive layer on one side of the filling layer away from the surface treatment layer." After this step, "provide the multilayer light source on one side of the adhesive layer away from the filling layer" may be added.

[0100] In this step, a bonding layer is attached to the surface of the filling layer, away from the surface treatment layer, and then a multilayer light source is attached to the bonding layer. This causes the multilayer structure to emit light, and the light is emitted through the light-transmitting holes, allowing the user to see the light source or the content displayed on the screen. When the multilayer light source is turned off, only the pattern on the decorative layer is visible, and the light-transmitting holes are too small to be observed with the naked eye, affecting the aesthetic appearance of the multilayer structure.

[0101] Figure 7 shows a multilayer structure 100 manufactured by the manufacturing method of this embodiment. Specifically, the multilayer structure 100 includes a surface treatment layer 70, a transparent carrier film 10, a recessed see-through layer 20, a pattern layer 302, a base layer 303, and a light-shielding layer 40, which are stacked in order from top to bottom. The recessed see-through layer 20 is provided with a plurality of recesses 201 arranged in an array, and the pattern layer 302 and base layer 303 are provided with second through-holes 301 that communicate with the recesses 201 at positions corresponding to the recesses 201, and the light-shielding layer 40 is provided with first through-holes 401 that communicate with the second through-holes 301 at positions corresponding to the second through-holes 301, and the recesses 201, first through-holes The through-holes 401 and the second through-holes 301 are sequentially connected to each other to form a light-transmitting hole 80, and the multilayer structure 100 further includes a filling layer 50, an adhesive layer 60 and a multilayer light source, the filling layer 50 is provided on one side of the light-shielding layer 40 away from the transparent carrier film 10 and the filling layer 50 sufficiently fills the light-transmitting hole 80, the adhesive layer 60 is provided on one side of the filling layer 50 away from the transparent carrier film 10 and the multilayer light source is provided on one side of the adhesive layer 60 away from the transparent carrier film 10, and here the base layer 303 and the pattern layer 302 are combined with the decorative layer 30.

[0102] In this embodiment, by transferring the arrangement, shape, size, and depth of the protrusions of the transfer mold to the recessed transparent layer by transfer, the recessed transparent layer has recesses with the same arrangement, shape, size, and depth. The process is simple, low-cost, and highly efficient, and the design of the protrusions can be optimized according to the actual situation, resulting in a better recessed light transmission effect and a better display effect. The lithographic printing process sequentially provides a light-shielding layer and a decorative layer on the recessed light-transmitting layer. Since the ink does not come into contact with the recesses during printing, the recesses are not covered and filled with ink. A first through-hole communicating with the recess is formed at a position corresponding to the recess in the light-shielding layer, and a second through-hole communicating with the first through-hole is formed at a position corresponding to the first through-hole in the decorative layer, forming light-transmitting holes. As a result, the multilayer structure allows the contents of the light source or display screen to be seen when the light source is lit, and when the light source is not lit, the light-transmitting holes do not transmit light, displaying the pattern on the decorative layer. The lithographic printing process is low-cost, highly efficient, and simple.

[0103] Embodiments of the present invention further disclose a multilayer structure having light transmittance and opacity, the multilayer structure being manufactured by the manufacturing method of any of the embodiments described above, the multilayer structure having good light transmittance effect, low manufacturing cost and high production efficiency.

[0104] The above embodiments are merely for illustrating, and not limiting, the technical features of the above embodiments or different embodiments can be combined under the concept of the present invention, the steps can be carried out in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in detail for the sake of brevity, and the present invention has been described in detail with reference to the above embodiments, but those skilled in the art should understand that they can still modify the technical solutions described in each of the above embodiments or make equivalent substitutions for some of the technical features therein, and that these modifications or substitutions do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of each embodiment of the present invention.

Claims

1. A method for manufacturing a multilayer structure having light transmittance and opacity, wherein the manufacturing method is: The steps include preparing a transparent carrier film and applying a transparent liquid coating to one side of the transparent carrier film, The process involves preparing a transfer mold having pre-set protrusions, pressing the protrusions of the transfer mold onto the liquid coating, curing the liquid coating, and then peeling off the transfer mold after curing to form recesses in the cured liquid coating that conform to the shape of the protrusions, thereby obtaining a recessed transparent layer. A step of printing a light-shielding layer on one side of the recessed transparent layer away from the transparent carrier film, other than the recess, by a planar printing process, thereby having a first through-hole communicating with the recess at a position corresponding to the recess in the light-shielding layer, A method for manufacturing a multilayer structure having light transmittance and opacity, comprising the step of printing a decorative layer on one side of the light-shielding layer away from the transparent carrier film, excluding the first through-hole, by a planar printing process, thereby obtaining a multilayer structure having a second through-hole in the decorative layer at a position corresponding to the first through-hole, communicating with the first through-hole, and the second through-hole communicating with the recess through the first through-hole to form a light-transmitting hole.

2. The step of printing a light-shielding layer on one side of the recessed transparent layer, away from the transparent carrier film, other than the recess, in the aforementioned planar printing process, consists of three steps: The steps include preparing a printing plate with pre-set graphic information, and applying ink to one side of the printing plate on which the graphic information is provided, The steps include transferring the aforementioned ink to a blanket, The process includes the step of covering one side of the blanket having the ink with the side of the recessed transparent layer away from the transparent carrier film, and applying pressure to transfer the ink from the blanket to the surface of the recessed transparent layer other than the recess, thereby forming the light-shielding layer having the first through-hole, or The step of printing a light-shielding layer on one side of the recessed transparent layer, away from the transparent carrier film, other than the recess, in the aforementioned planar printing process, consists of three steps: The steps include preparing a printing plate with pre-set graphic information, and applying ink to one side of the printing plate on which the graphic information is provided, The steps include transferring the aforementioned ink to a blanket, The process includes the step of covering one side of the blanket having the ink with the side of the recessed transparent layer away from the transparent carrier film, and applying pressure to transfer the ink from the blanket to the surface of the recessed transparent layer other than the recess, thereby forming the light-shielding layer having the first through-hole, The step of preparing a printing plate for the pre-set graphic information and applying ink to one side of the printing plate on which the graphic information is provided consists of three steps: The steps include transferring the pre-set graphic information, which includes one or more patterns or characters, to a printing plate having an oil-lipophilic and hydrophobic graphic area and a hydrophilic and oil-phobic blank area, by photograph or electronic color separation, The steps include applying ink to the graphic area of ​​the printing plate and allowing the ink to adhere to the graphic area, The process includes the step of wetting the blank areas of the printing plate with a wetting solution to form a water film in the blank areas, or The step of printing a light-shielding layer on one side of the recessed transparent layer, away from the transparent carrier film, other than the recess, in the aforementioned planar printing process, consists of three steps: The steps include preparing a printing plate with pre-set graphic information, and applying ink to one side of the printing plate on which the graphic information is provided, The steps include transferring the aforementioned ink to a blanket, The process includes the step of covering one side of the blanket having the ink with the side of the recessed transparent layer away from the transparent carrier film, and applying pressure to transfer the ink from the blanket to the surface of the recessed transparent layer other than the recess, thereby forming the light-shielding layer having the first through-hole, The step of transferring the ink to the blanket is: The process includes the step of covering the ink surface of the printing plate with a blanket, thereby transferring the ink located on the printing plate from the printing plate to the blanket, or The decorative layer includes a pattern layer and a base layer, and the base layer is provided on one side of the light-shielding layer away from the transparent carrier film. A pattern layer is provided on one side of the aforementioned base layer that is away from the light-shielding layer, or The step of preparing a transfer mold having the aforementioned pre-set protrusions is: The process includes the step of providing a plurality of the aforementioned protrusions and obtaining the transfer mold having the protrusions by machining based on a predetermined arrangement method and size of the protrusions, which includes one or more of the equilateral triangle grid arrangement, square grid arrangement, or honeycomb grid arrangement, or After the step of obtaining a multilayer structure, by printing a decorative layer on one side of the light-shielding layer away from the transparent carrier film, excluding the first through-hole, the decorative layer has a second through-hole in a position corresponding to the first through-hole and communicating with the first through-hole, and the second through-hole communicates with the recess through the first through-hole to form a light-transmitting hole, The further step includes providing a filling layer on one side of the decorative layer away from the transparent carrier film and within the light-transmitting holes, wherein the filling layer sufficiently fills the light-transmitting holes, or After the step of obtaining a multilayer structure, by printing a decorative layer on one side of the light-shielding layer away from the transparent carrier film, excluding the first through-hole, the decorative layer has a second through-hole in a position corresponding to the first through-hole and communicating with the first through-hole, and the second through-hole communicates with the recess through the first through-hole to form a light-transmitting hole, The method further includes the step of providing a filling layer on one side of the decorative layer away from the transparent carrier film and within the light-transmitting holes, wherein the filling layer sufficiently fills the light-transmitting holes. After the step of providing a filling layer on one side of the decorative layer away from the transparent carrier film and within the light-transmitting holes, and after the filling layer sufficiently fills the light-transmitting holes, The steps include: providing an adhesive layer on one side of the filling layer that is away from the transparent carrier film; The steps include providing the multilayer light source on one side of the transparent carrier film away from the adhesive layer, or The steps include: providing an adhesive layer on one side of the transparent carrier film that is away from the filling layer; The manufacturing method according to claim 1, further comprising the step of providing the multilayer light source on one side of the adhesive layer away from the filling layer.

3. A method for manufacturing a multilayer structure having light transmittance and opacity, wherein the manufacturing method is: The steps include preparing a transparent carrier film and applying a transparent liquid coating to one side of the transparent carrier film, The process involves preparing a transfer mold having pre-set protrusions, pressing the protrusions of the transfer mold onto the liquid coating, curing the liquid coating, and then peeling off the transfer mold after curing to form recesses in the cured liquid coating that conform to the shape of the protrusions, thereby obtaining a recessed transparent layer. A planar printing process is used to print a decorative layer on one side of the recessed transparent layer away from the transparent carrier film, excluding the recess, thereby creating a second through-hole in the decorative layer at a position corresponding to the recess, communicating with the recess. A method for manufacturing a multilayer structure having light transmittance and opacity, characterized by comprising the step of printing a light-shielding layer on one side of the decorative layer away from the transparent carrier film, excluding the second through-hole, by a planar printing process, thereby obtaining a multilayer structure having a first through-hole communicating with the second through-hole at a position corresponding to the second through-hole, the first through-hole communicating with the recess through the second through-hole to form a light-transmitting hole.

4. The decorative layer includes a pattern layer and a base layer, and the pattern layer is provided on one side of the recessed transparent layer away from the transparent carrier film. The manufacturing method according to claim 3, characterized in that a base layer is provided on one side of the pattern layer that is away from the recessed transparent layer.

5. After the step of obtaining a multilayer structure, by printing a light-shielding layer on one side of the decorative layer away from the transparent carrier film, excluding the second through-hole, the light-shielding layer has a first through-hole that communicates with the second through-hole at a position corresponding to the second through-hole, and the first through-hole communicates with the recess through the second through-hole to form a light-transmitting hole, The manufacturing method according to claim 3, further comprising the step of providing a filling layer on one side of the light-shielding layer away from the transparent carrier film and within the light-transmitting holes, wherein the filling layer sufficiently fills the light-transmitting holes.

6. After the step of providing a filling layer on one side of the light-shielding layer away from the transparent carrier film and within the light-transmitting holes, and after the filling layer sufficiently fills the light-transmitting holes, The steps include: providing an adhesive layer on one side of the transparent carrier film that is away from the filling layer; The manufacturing method according to claim 5, further comprising the step of providing the multilayer light source on one side of the filling layer away from the adhesive layer.

7. After the step of providing a filling layer on one side of the light-shielding layer away from the transparent carrier film and within the light-transmitting holes, and after the filling layer sufficiently fills the light-transmitting holes, The step of providing a surface treatment layer on one side of the transparent carrier film that is away from the filling layer, The step of providing an adhesive layer on one side of the filling layer that is away from the surface treatment layer, The manufacturing method according to claim 5, further comprising the step of providing the multilayer light source on one side of the adhesive layer away from the filling layer.

8. A multilayer structure having light transmittance and opacity, wherein the multilayer structure is manufactured using the manufacturing method described in claim 1 or 2.

9. A multilayer structure having light transmittance and opacity, wherein the multilayer structure is manufactured using the manufacturing method described in any one of claims 3 to 7.

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