Transparent antenna with high light transmittance

Abstract

The utility model relates to the field of wireless communication, in particular to a transparent antenna with high light transmittance, which comprises a transparent dielectric layer, a transparent antenna main body, a bearing layer, a polymer layer and a transparent conducting layer on the surface of the dielectric layer, and a grounding layer is a conductor and has excellent light transmittance. According to the utility model, the excellent conductive performance of the metal nanowire and the conductive characteristic and high light transmittance of the graphene film are utilized, the light transmittance and conductivity of the transparent conductive film are improved, the radiation efficiency of the transparent antenna is improved, and meanwhile, the graphene film and the metal nanowire have the bendable characteristic, so that the transparent antenna is more flexible. Therefore, the flexible transparent antenna can be prepared, the graphene film has the characteristic of non-penetrability to molecules and atoms, the stability of the composite structure transparent conductive film can be improved, the metal nanowire can be formed into a film by adopting a printing method, and the preparation cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of wireless communications, in particular to a transparent antenna with high light transmittance. Background Art

[0002] Antennas are one of the most important components in wireless communication systems, used to transmit and receive electromagnetic waves. With the rapid development of 5G wireless communication technology, its application scenarios are becoming more and more diverse, making the requirements for antenna performance more and more diverse. In order for the antenna to have good conformality, stealth and stability so that it can be integrated into wireless communication systems such as mobile terminals, satellites, and automobiles, the antenna needs to have optical transparency. On the other hand, with the development of wearable electronic devices becoming more intelligent, miniaturized, and thinner, antennas also need to be flexible. Antennas that meet the above applications need to have characteristics such as high conductivity, high transparency and flexibility.

[0003] The Chinese patent discloses an antenna assembly (authorization announcement number CN 211480304 U). This patented technology can receive VHF and UHF high-definition television signals without using a duplexer and a VHF balun. However, the graphene film currently prepared by the chemical vapor deposition method in this patent is basically a polycrystalline graphene material composed of small-domain graphene crystals, which has defects such as grain boundaries and affects the conductivity. The conductivity of the antenna material is an important factor in determining the radiation performance of the antenna. Generally speaking, the surface resistance of the currently prepared graphene (single layer) is generally above 1000 nm, which cannot meet the performance requirements of transparent antennas.

[0004] Therefore, those skilled in the art provide a transparent antenna with high light transmittance to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a transparent antenna with high light transmittance, comprising a transparent dielectric layer, a transparent antenna body, a bearing layer, a polymer layer and a transparent conductive layer on the surface of the dielectric layer;

[0006] The ground layer is a conductor and has excellent light transmittance, if a flexible transparent antenna body is made;

[0007] A bearing layer, the bearing layer comprising a first surface and a second surface arranged opposite to the first surface;

[0008] The first surface of the carrier layer is provided with a grid-like conductive wire to form a transparent antenna body;

[0009] The second surface of the bearing layer is provided with a decorative layer;

[0010] The decorative layer comprises: a micro-nano structure layer, the micro-nano structure layer is arranged on the second surface of the bearing layer, and a micro-nano structure body is arranged on the side of the micro-nano structure layer away from the bearing layer;

[0011] A reflective layer is provided on the side of the micro-nano structure layer away from the bearing layer;

[0012] A coloring layer is provided on a side of the reflective layer away from the micro-nano structure layer.

[0013] Preferably: the conductive layer is a structure composed of a metal nanowire network and a graphene film, that is, the structure of the transparent antenna body can be a dielectric layer / graphene film / metal nanowire network, or a dielectric layer / metal nanowire network / graphene film. The other transparent antenna provided by the utility model comprises a transparent dielectric layer, a transparent conductive layer on the dielectric layer, and a grounding layer on the other surface of the dielectric layer, wherein the conductive layer is a structure composed of a metal nanowire network and a graphene film.

[0014] Preferably: the metal nanowire is silver, copper or aluminum nanowire, and the diameter of the metal nanowire is 5-100nm; the transparent conductive layer is formed by micro-nano processing technology to form the designed antenna pattern one and antenna pattern two, and the micro-nano processing technology includes but is not limited to photolithography, electron beam etching or laser engraving; the antenna pattern one and antenna pattern two are designed according to the usage scenario, and a recessed structure is provided on one side of the polymer layer, and a conductive material is provided in the recessed structure to form a transparent antenna and a virtual electrode, and the transparent antenna body is composed of a grid-like conductive wire; the virtual electrode is provided in the spacer area, and the virtual electrode is composed of a grid or a line segment, and the grid is composed of grid lines, and the absolute value of the difference between the transmittance of the transparent antenna body and the transmittance of the virtual electrode is not greater than 20%, and for better visual effects, the absolute value of the difference in transmittance is not greater than 10%, or the absolute value of the difference in transmittance is not greater than 5%.

[0015] Preferably: the bearing layer can be made of PET, glass, PU, ​​TPU, PE, PMMA and other materials that play a bearing role. The decorative layer can reflect the gradient light and shadow effect, the normal straight line or curve light and shadow effect, and the light and shadow effect with an image. The micro-nano structure can be a linear cylindrical mirror, a curved cylindrical mirror, a short line, a microlens, a recessed structure, a CD pattern, a three-sided cone, a four-sided cone and other structures. Of course, the material used for the micro-nano structure layer can be a colored polymer, such as a colored UV curing glue, and of course it can also be a heat-cured colored glue. The main function of the coloring layer is to block light, and it can also play a color role together with the reflective layer. In one embodiment, the decorative layer can have at least two layers of micro-nano structure layers, which can have a richer visual effect, so that the cover module has both decorative effects and can also realize signal transmission and receiving functions.

[0016] Technical effects and advantages of the utility model:

[0017] 1. The utility model utilizes the excellent conductive properties of metal nanowires and the conductive properties and high light transmittance of graphene films to improve the light transmittance and conductivity of transparent conductive films, thereby improving the radiation efficiency of transparent antennas. At the same time, both graphene films and metal nanowires have bendable properties, so flexible transparent antennas can be prepared. Graphene films are impenetrable to molecules and atoms, which can improve the stability of the above-mentioned composite structure transparent conductive film. Metal nanowires can be formed into films by printing, which can reduce the preparation cost.

[0018] 2. The utility model can realize signal reception and transmission on transparent materials, and the two layers of transparent antennas form a positional relationship of "filling" each other, so that the transparent antennas are visually unified, so that when people use things with transparent antennas, there is no obvious difference in transmittance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a transparent antenna with high light transmittance provided in an embodiment of the present application. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of a transparent antenna with high light transmittance provided in an embodiment of the present application. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of a transparent antenna with high light transmittance provided in an embodiment of the present application. Figure 3 ;

[0022] Figure 4 It is a structural schematic diagram of an antenna pattern 1 in a transparent antenna with high light transmittance provided in an embodiment of the present application;

[0023] Figure 5 This is a structural schematic diagram of an antenna pattern 2 in a transparent antenna with high light transmittance provided in an embodiment of the present application;

[0024] Figure 6 It is a structural schematic diagram of a transparent antenna body, grid lines, a polymer layer and a decorative layer in a transparent antenna with high light transmittance provided in an embodiment of the present application.

[0025] In the figure: 1. dielectric layer; 2. conductive layer; 3. ground layer; 4. antenna pattern one; 5. antenna pattern two; 6. transparent antenna body; 7. grid lines; 8. polymer layer; 9. decorative layer; 91. bearing layer; 92. micro-nano structure layer; 93. micro-nano structure; 94. reflective layer; 95. coloring layer. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0027] Example 1

[0028] See also Figures 1 to 6 In this embodiment, a transparent antenna with high light transmittance is provided, comprising a transparent dielectric layer 1, a transparent antenna body 6, a carrier layer 201, a polymer layer 8 and a transparent conductive layer 2 on the surface of the dielectric layer 1, wherein the conductive layer 2 is a structure composed of a metal nanowire network and a graphene film, that is, the structure of the transparent antenna body 6 can be a dielectric layer 1 / graphene film / metal nanowire network, or a dielectric layer 1 / metal nanowire network / graphene film;

[0029] Another transparent antenna provided by the utility model comprises a transparent dielectric layer 1, a transparent conductive layer 2 on the dielectric layer 1, and a ground layer 3 on the other surface of the dielectric layer 1, wherein the conductive layer 2 is a structure composed of a metal nanowire network and a graphene film;

[0030] The metal nanowire is a silver, copper or aluminum nanowire, and the diameter of the metal nanowire is 5-100 nm;

[0031] The transparent conductive layer 2 is subjected to micro-nano processing technology to form the designed antenna pattern 1 4 and antenna pattern 2 5. The micro-nano processing technology includes but is not limited to photolithography, electron beam etching or laser engraving, etc. The antenna pattern 1 4 and antenna pattern 2 5 are designed according to the usage scenario;

[0032] The ground layer 3 is a conductor and has excellent light transmittance. If a flexible transparent antenna body 6 is to be manufactured, the ground layer 3 is also required to be flexible. The preparation method thereof can be selected according to different material properties. The conductor material includes but is not limited to ITO, metal thin layer, graphene film, metal nanowire, conductive polymer PEDOT:PSS (poly 3,4-ethylenedioxythiophene: polystyrene sulfonate), etc.

[0033] A concave structure is provided on one side of the polymer layer 8, and a conductive material is provided in the concave structure to form a transparent antenna and a virtual electrode, and the transparent antenna body 6 is composed of a grid-like conductive wire;

[0034] The virtual electrode is arranged in the spacing area, the virtual electrode is composed of a grid or a line segment, and the grid is composed of grid lines 7, and the absolute value of the difference between the transmittance of the transparent antenna body 6 and the transmittance of the virtual electrode is not greater than 20%, and the absolute value of the difference in transmittance is not greater than 10% for better visual effect, or the absolute value of the difference in transmittance is not greater than 5%;

[0035] The bearing layer 91 includes a first surface and a second surface arranged opposite to the first surface; the bearing layer 91 can be made of a material that plays a bearing role, such as PET, glass, PU, ​​TPU, PE, PMMA, etc.;

[0036] The first surface of the carrier layer 91 is provided with a grid-like conductive wire to form a transparent antenna body 6;

[0037] A virtual electrode, wherein the virtual electrode is composed of a grid or a line segment, and the grid is composed of grid lines 7, and the absolute value of the difference between the transmittance of the transparent antenna body 6 and the transmittance of the virtual electrode is not greater than 20%, and the absolute value of the difference in transmittance is not greater than 10% for a better visual effect, or the absolute value of the difference in transmittance is not greater than 5%; the virtual electrode is electrically insulated from the transparent antenna body 6;

[0038] The second surface of the carrier layer 91 is provided with a decorative layer 9, and the decorative layer 9 can embody a gradient light and shadow effect, a normal straight line or curve light and shadow effect, or a light and shadow effect with an image;

[0039] The decorative layer 9 includes: a micro-nano structure layer 92, the micro-nano structure layer 92 is arranged on the second surface of the bearing layer 91, and a micro-nano structure body 93 is arranged on the side of the micro-nano structure layer 92 away from the bearing layer 91. The micro-nano structure body 93 can be a linear cylindrical mirror, a curved cylindrical mirror, a short line, a microlens, a concave structure, a CD pattern, a three-sided cone, a four-sided cone and the like. Of course, the material used for the micro-nano structure layer 92 can be a colored polymer, such as a colored UV curing glue, or a thermally cured colored glue;

[0040] A reflective layer 94 is disposed on the side of the micro-nano structure layer 92 away from the carrier layer 91. The reflective layer 94 can play a role of reflection or color. In fact, a reflective layer 94 with a certain transmittance is disposed on the first surface of the carrier layer 91, that is, between the polymer layer 8 and the carrier layer 91. A reflective layer 94 with a certain transmittance is also disposed between the micro-nano structure layer 92 and the carrier layer 91.

[0041] A coloring layer 95 is provided on the side of the reflective layer 94 away from the micro-nano structure layer 92. The coloring layer 95 mainly blocks light and can also play a role of color together with the reflective layer 94.

[0042] In one embodiment, the decoration layer 9 may have at least two layers of micro-nano structure layers 92, which can have a richer visual effect, so that the cover module has both decorative effects and signal transmission and reception functions.

[0043] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A transparent antenna with high light transmittance, comprising a transparent dielectric layer (1), a transparent antenna body (6), a carrier layer (91), a polymer layer (8) and a transparent conductive layer (2) on the surface of the dielectric layer (1), characterized in that: The ground layer (3) is a conductor and has excellent light transmittance. If a flexible transparent antenna body (6) is manufactured; A bearing layer (91), the bearing layer (91) comprising a first surface and a second surface arranged opposite to the first surface; The first surface of the carrier layer (91) is provided with grid-shaped conductive wires to form a transparent antenna body (6); The second surface of the bearing layer (91) is provided with a decorative layer (9); The decorative layer (9) comprises: a micro-nano structure layer (92), the micro-nano structure layer (92) being arranged on the second surface of the bearing layer (91), and a micro-nano structure body (93) being arranged on a side of the micro-nano structure layer (92) away from the bearing layer (91); A reflective layer (94) is provided on the side of the micro-nano structure layer (92) away from the bearing layer (91); A coloring layer (95) is provided on the side of the reflective layer (94) away from the micro-nano structure layer (92).

2. A transparent antenna with high light transmittance according to claim 1, characterized in that: The conductive layer (2) is a structure composed of a metal nanowire network and a graphene film.

3. The transparent antenna with high light transmittance according to claim 1, characterized in that: Another transparent antenna comprises a transparent dielectric layer (1), a transparent conductive layer (2) on the dielectric layer (1), and a ground layer (3) on the other surface of the dielectric layer (1); the conductive layer (2) is a structure composed of a metal nanowire network and a graphene film.

4. A transparent antenna with high light transmittance according to claim 3, characterized in that: The metal nanowires are silver, copper or aluminum nanowires, and the diameter of the metal nanowires is 5-100 nm.

5. The transparent antenna with high light transmittance according to claim 3, characterized in that: The transparent conductive layer (2) is formed into the designed antenna pattern 1 (4) and antenna pattern 2 (5) by micro-nano processing technology, and the micro-nano processing technology includes but is not limited to photolithography, electron beam etching or laser engraving.

6. The transparent antenna with high light transmittance according to claim 1, characterized in that: A recessed structure is provided on one side of the polymer layer (8), and a conductive material is provided in the recessed structure to form a transparent antenna and a virtual electrode. The transparent antenna body (6) is composed of a grid-shaped conductive line; the virtual electrode is provided in the spacing area, and the virtual electrode is composed of a grid or a line segment, and the grid is composed of grid lines (7). The absolute value of the difference between the transmittance of the transparent antenna body (6) and the transmittance of the virtual electrode is not greater than 20%. For a better visual effect, the absolute value of the difference in transmittance is not greater than 10%, or the absolute value of the difference in transmittance is not greater than 5%.

7. The transparent antenna with high light transmittance according to claim 1, characterized in that: The bearing layer (91) uses PET, glass, PU, ​​TPU, PE or PMMA as a bearing material.

8. The transparent antenna with high light transmittance according to claim 1, characterized in that: The decorative layer (9) embodies a gradient light and shadow effect.

9. The transparent antenna with high light transmittance according to claim 1, characterized in that: The micro-nano structure (93) is any one of a linear cylindrical mirror, a curved cylindrical mirror, a short line, a microlens, a concave structure, a CD pattern, a three-sided cone or a four-sided cone. The material used for the micro-nano structure layer (92) is a colored polymer, such as colored UV curing glue.

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