Anti-dazzle Low-E vehicle film and vehicle window thereof

Abstract

The invention discloses an anti-dazzle Low-E vehicle film and a vehicle window thereof, and relates to the technical field of intelligent vehicle films. The invention provides a micro-nano structure with a nested ring design, and solves the problems that a conventional Low-E vehicle window is relatively high in electromagnetic shielding effectiveness, and is not beneficial to penetration of GPS, ETC and mobile phone signals, so that signals of mobile equipment in the vehicle are weakened, and the navigation accuracy and the communication quality are influenced. Meanwhile, the surface of the vehicle film is divided into a nested ring structure area and a non-etching area, so that the problem of visual fatigue of a driver is solved. A nested ring structure Low-E film of a nested ring structure area is selected in a microwave skylight area around a car window and behind a rearview mirror, so that the electromagnetic transmission performance jumps, the electromagnetic permeability of the Low-E car film is achieved, the rest area of the car window is a uniform Low-E car film of a non-etching area, the car film is attached to the inner side of the car window, and the car window is not damaged. And the problem of visual fatigue of the driver is solved.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent vehicle films. Background Art

[0002] In the context of China's vigorous development of new energy vehicles, it is crucial to carry out high-quality development of new energy vehicle accessories. Since new energy vehicles are powered by electricity, their energy utilization efficiency is crucial. The quality of energy management of the entire vehicle will greatly affect the vehicle's cruising range and driving comfort. Conventional car windows have a high heat transfer coefficient, and the low-temperature / high-temperature air generated by the car air conditioner will be directly dissipated through the window, resulting in high power consumption of vehicle cooling / heating. In recent years, by using Low-E glass as car windows, the energy consumption of air conditioners has been effectively reduced by regulating the incident solar spectrum. At the same time, the loading of Low-E glass also has a series of advantages such as increasing the vehicle's cruising range, reducing ultraviolet radiation, and improving driving comfort. However, in my country's automobile stock market, most car windows are not loaded with Low-E coatings. Replacing windows with Low-E functions is costly and time-consuming, which raises the entry threshold for consumer experience and also restricts the development of the automobile industry.

[0003] Low-E car films designed for car windows are a vehicle modification option that can be affixed to car windows to provide effects similar to Low-E glass, while the price is much lower than replacing the window glass. However, conventional Low-E car films have the same problems as Low-E glass. Since the film layer itself has electromagnetic shielding properties, it is not conducive to the penetration of GPS, ETC, and mobile phone signals, resulting in weakened signals of mobile devices in the car, affecting navigation accuracy and communication quality. In recent years, especially, cars have gradually become new types of smart mobile terminals, and the demand for mobile communications of smart devices inside cars has increased sharply, which has gradually exposed this problem to the public. Therefore, the development of Low-E car films with mobile signal transparency enhancement is of great significance to the development of the domestic automotive aftermarket and has important economic value.

[0004] By etching a microstructure with a mobile communication signal transmittance enhancement function on the entire surface of the Low-E car film, the communication signal can be effectively transmitted. However, this type of Low-E car film with mobile communication signal transmittance enhancement belongs to a micro-nano structure, and the microstructure is at the micron level, so it is easy to have high-order diffraction in the visible light band, resulting in the appearance of stray light spots. Usually, the human eye observes images through primary-order diffraction. The superposition of high-order diffraction and primary-order diffraction is likely to cause ghosting, which affects the driver's observation of the outside world. Drivers who observe through this window for a long time are prone to visual fatigue and other problems. At the same time, when the external light intensity is strong, the external light source incident on the grating structure will cause the transmitted light to propagate along the direction of the high-order diffraction, resulting in glare and affecting the driver's field of vision. Therefore, it is very important to develop a Low-E car film that has both mobile signal transmittance enhancement and anti-glare. Summary of the invention

[0005] The present invention proposes a micro-nano structure with a nested ring design, which solves the problem that the conventional Low-E car window has high electromagnetic shielding efficiency, which is not conducive to the penetration of GPS, ETC, and mobile phone signals, resulting in weakened signals of mobile devices in the car, affecting navigation accuracy and communication quality. At the same time, the present invention solves the problem of visual fatigue of the driver by dividing the nested ring structure area and the non-etched area on the surface of the car film. Finally, an anti-glare Low-E car film and car window are proposed.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides an anti-glare Low-E vehicle film, the vehicle film comprising a flexible substrate layer, a 5G anti-reflection Low-E layer, and an optical adhesive layer;

[0008] The 5G anti-reflection Low-E layer includes a nested ring structure area and a non-etched area;

[0009] The nested ring structure region is a nested ring structure Low-E film;

[0010] The nested ring structure Low-E film is composed of a plurality of ring structure units arranged in an array, and each ring structure unit is interconnected;

[0011] The non-etched area is a uniform Low-E film;

[0012] The nested ring Low-E film and the uniform Low-E film are both covered on the flexible base layer, and the optical adhesive layer is covered on the nested ring Low-E film and the uniform Low-E film.

[0013] Furthermore, in another preferred embodiment, the ring structure unit is a circular ring, an equilateral triangle, a rectangle or a regular polygon, and the number of sides of the regular polygon is at least 4;

[0014] When the ring structure unit is a circular ring, the ratio of the outer diameter of the circular ring to the width of the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected;

[0015] When the ring structure unit is an equilateral triangle, the ratio of the side length of the triangle to the width of the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected;

[0016] When the ring structure unit is a rectangle, the ratio of the length or width of the rectangle to the width of the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected;

[0017] When the ring structure unit is a regular polygon and the number of sides of the regular polygon is an even number, the ratio of the diameter of the circumscribed circle of the ring structure unit to the width of the adjacent gap in the array is ≥1, and the ring structure units are interconnected;

[0018] When the ring structure unit is a regular polygon and the number of sides of the regular polygon is an odd number, the width ratio of the line connecting any vertex in the regular polygon to the symmetrical position farthest from it to the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected.

[0019] Furthermore, in a preferred embodiment, the outer diameter c of the above-mentioned ring is 0.1-150 mm, and the width a of adjacent gaps in the array is 0.1-50 mm.

[0020] Furthermore, in a preferred embodiment, the line width w of the circular ring is 1 μm-3 mm.

[0021] Furthermore, in a preferred embodiment, the surface resistance of the nested ring structure Low-E film is in the range of 0.001Ω / sq-30Ω / sq, and the thickness of the nested ring structure Low-E film is in the range of 5nm-3μm.

[0022] Furthermore, in another preferred embodiment, the thickness of the flexible substrate layer is 100 μm-3 mm;

[0023] The thickness of the optical adhesive layer is 10μm-2mm;

[0024] The thickness of Low-E film is 20nm-5μm.

[0025] Furthermore, in a preferred embodiment, the optical adhesive layer is made of any one of organic silicone rubber, acrylic resin, unsaturated polyester, polyurethane or epoxy resin.

[0026] Furthermore, there is a preferred embodiment, the material of the above-mentioned 5G anti-reflection Low-E layer is any one of ITO, Ag, In2O3, CdO, SnO2, ZnO, TiO2 and Si3N4, or a combination of several of them.

[0027] Furthermore, in a preferred embodiment, the flexible substrate layer is made of PVA, PET, PVC, PDMS, PI, PEN, PU or TPC optically transparent flexible material.

[0028] The present invention also provides a vehicle window realized by an anti-glare Low-E vehicle film as described in any one of the above items, wherein a nested ring structure Low-E film in the nested ring structure area is selected around the vehicle window and the microwave skylight area behind the rearview mirror, and the rest of the vehicle window is a uniform Low-E vehicle film in the non-etched area, and the vehicle film is affixed to the inside of the vehicle window.

[0029] The beneficial effects of the present invention are:

[0030] 1. The present invention provides an anti-glare Low-E car film, which divides the surface of the car film into a nested ring structure area and a non-etched area, wherein the nested ring structure area is a micro-nano structure of a nested ring design, which solves the problem that the conventional Low-E car window has high electromagnetic shielding efficiency, which is not conducive to the penetration of GPS, ETC, and mobile phone signals, resulting in weakened signals of mobile devices in the car, affecting navigation accuracy and communication quality. The non-etched area serves as the driver's visual window area, which solves the problem of visual fatigue of the driver.

[0031] Furthermore, in the non-etched area of ​​the present invention, by covering the flexible substrate with a uniform Low-E film, the UV cutoff of the formed conductive coating is around 300nm, and it exhibits high transparency in the visible light band. This effectively reflects infrared rays while protecting against ultraviolet rays. Further covering the uniform Low-E film with an optical adhesive layer can reduce light scattering at the interface. At the same time, the adhesive layer covering the Low-E grid improves the roughness of the film surface, further reducing light scattering, thereby effectively ensuring the clarity of observation through the structure.

[0032] Furthermore, the nested ring structure Low-E film described in the present invention is an invention that overcomes the prejudice of the prior art:

[0033] The present invention breaks the conventional idea of ​​the prior art that the radio wave transmission area is usually set as a circular ring, and the outer diameter W2 of the ring is smaller than the length W1 of one side, that is, the outer diameter of the ring needs to be smaller than the width of the adjacent gap to achieve the electromagnetic transmission effect. The design idea of ​​the electromagnetic transmission area of ​​the present invention is different from the prior art. The outer diameter of the ring is set to be greater than or equal to the width of the adjacent gap, so that each ring structure unit is interconnected, the electromagnetic transmission performance undergoes a jump, and the electromagnetic transmission effect is better. Therefore, the prejudice of the prior art is overcome.

[0034] 2. The present invention provides a car window, which uses a Low-E film with a nested ring structure around the car window and the microwave skylight area behind the rearview mirror to make the electromagnetic transmission performance jump, and realize the electromagnetic transmittance of the Low-E car film, which is conducive to the penetration of GPS, ETC, and mobile phone signals, and improves navigation accuracy and communication quality. The rest of the car window is a uniform Low-E car film in the non-etched area. The car film is pasted on the inside of the car window, which effectively ensures the clarity of observation through the structure, and avoids the high-order diffraction caused by the car film covering the entire area of ​​the car window with a microstructure, thereby causing unclear imaging and easily causing visual fatigue of the driver.

[0035] The present invention is applicable to the field of smart car films. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of an anti-glare Low-E vehicle film according to the present invention;

[0037] Figure 2 Schematic diagram of the structure of the nested circular ring structure Low-E film in the nested ring structure region of the present invention;

[0038] Figure 3 Figure 1 is a schematic diagram of the structure of the car film with different ratios of the outer diameter c of the ring to the width a of the adjacent gaps of the present invention, wherein Figure (a) is a schematic diagram of the structure of the car film with c / a=0.5, Figure (b) is a schematic diagram of the structure of the car film with c / a=1, and Figure (c) is Schematic diagram of the vehicle film structure, Figure (d) is a schematic diagram of the vehicle film structure when c / a=2;

[0039] Figure 4 This is a graph showing the variation of the transmittance of the circular ring structure car film with adjacent gap width a=3mm at 4GHz as a function of the c / a parameter;

[0040] Figure 5 This is the surface current distribution diagram of the circular ring structure with c / a=0.5 described in the present invention;

[0041] Figure 6 This is the surface current distribution diagram of the circular ring structure with c / a=1.03 described in the present invention;

[0042] Figure 7 Schematic diagram of the structure of the nested triangle structure Low-E film in the nested ring structure region of the present invention;

[0043] Figure 8 Schematic diagrams of vehicle film structures with different ratios of the triangle side length c to the width a of the adjacent gaps according to the present invention, wherein Figure (a) is a schematic diagram of a vehicle film structure with c / a=0.5, Figure (b) is a schematic diagram of a vehicle film structure with c / a=1, and Figure (c) is a schematic diagram of a vehicle film structure with c / a=2;

[0044] Fig. 9 This is a graph showing the variation of the transmittance of the triangular structure car film with adjacent gap width a=3mm at 4GHz as a function of the c / a parameter;

[0045] Fig.10 It is a schematic structural diagram of a nested square ring structure Low-E film in a nested ring structure region of the present invention;

[0046] Fig.11 Figure 1 is a schematic diagram of the structure of the car film with different ratios of the side length c of the square ring to the width a of the adjacent gaps of the present invention, wherein Figure (a) is a schematic diagram of the structure of the car film with c / a=0.5, and Figure (b) is Schematic diagram of the car film structure, Figure (c) is Schematic diagram of the vehicle film structure, Figure (d) is a schematic diagram of the vehicle film structure when c / a=2;

[0047] Fig.12 This is a graph showing the variation of the transmittance of the square ring structure car film with adjacent gap width a=3mm at 4GHz as a function of the c / a parameter;

[0048] Fig.13 Schematic diagram of the Low-E film structure in which the nested square ring structure of the present invention is rotated 60°;

[0049] Fig.14 Figure 1 is a schematic diagram of a car film structure with different ratios of the side length c of the square ring structure rotated 60° to the width a of the adjacent gaps, wherein Figure (a) is a schematic diagram of the car film structure with c / a=0.5, and Figure (b) is Schematic diagram of the car film structure, Figure (c) is Schematic diagram of the vehicle film structure, Figure (d) is a schematic diagram of the vehicle film structure when c / a=2;

[0050] Fig.15 This is a graph showing the variation of the transmittance of the rotating square ring structure car film with adjacent gap width a=3mm at 4GHz as a function of the c / a parameter;

[0051] Fig.16 Schematic diagram of the structure of the nested pentagonal Low-E film in the nested ring structure region of the present invention;

[0052] Fig.17 Schematic diagrams of vehicle film structures with different ratios of the pentagon side length c to the width a of the adjacent gaps according to the present invention, wherein Figure (a) is a schematic diagram of a vehicle film structure with c / a=0.25, Figure (b) is a schematic diagram of a vehicle film structure with c / a=0.5, and Figure (c) is a schematic diagram of a vehicle film structure with c / a=1;

[0053] Fig.18 This is a graph showing the variation of the transmittance of the pentagonal structure car film with adjacent gap width a=3mm at 4GHz as a function of the c / a parameter.

[0054] Among them, 1 represents the optical adhesive layer, 2 represents the 5G anti-reflection Low-E layer, and 3 represents the flexible base layer. DETAILED DESCRIPTION

[0055] The specific implementation mode of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

[0056] Implementation method 1, see Figure 1 This embodiment is described. This embodiment provides an anti-glare Low-E car film, which is used to solve the problem that the conventional Low-E car window has high electromagnetic shielding efficiency, which is not conducive to the penetration of GPS, ETC, and mobile phone signals, resulting in weakened signals of mobile devices in the car, affecting navigation accuracy and communication quality. At the same time, this embodiment solves the problem of visual fatigue of the driver by dividing the nested ring structure area and the non-etched area on the surface of the car film.

[0057] An anti-glare Low-E vehicle film comprises a flexible base layer 3, a 5G anti-reflection Low-E layer 2, and an optical adhesive layer 1;

[0058] The 5G anti-reflection Low-E layer includes a nested ring structure area and a non-etched area;

[0059] The nested ring structure region is a nested ring structure Low-E film;

[0060] The nested ring structure Low-E film is composed of a plurality of ring structure units arranged in an array, and each ring structure unit is interconnected;

[0061] The non-etched area is a uniform Low-E film;

[0062] The nested ring Low-E film and the uniform Low-E film are both covered on the flexible base layer, and the optical adhesive layer is covered on the nested ring Low-E film and the uniform Low-E film.

[0063] In practical application, if Figure 1 As shown, the 5G anti-reflection Low-E layer 2 includes a nested ring structure area and a non-etched area, wherein the nested ring structure area uses a nested ring structure Low-E film, that is, the nested ring structure Low-E film is covered on the flexible substrate layer, and the optical adhesive layer is covered on the nested ring structure Low-E film; the nested ring structure Low-E film is arranged by an array of multiple ring structure units, and each ring structure unit is interconnected; so that the electromagnetic transmission performance jumps, that is: from strong electromagnetic shielding to electromagnetic transmission, the electromagnetic transmittance of the Low-E vehicle film is realized, which is beneficial to the penetration of GPS, ETC, and mobile phone signals, and improves navigation accuracy and communication quality.

[0064] Furthermore, the ultraviolet cutoff limit of the Low-E film is around 300nm, and it exhibits high transparency in the visible light band, thereby effectively reflecting infrared rays and protecting against ultraviolet rays.

[0065] Preferably, the surface resistance range of the nested ring structure Low-E film is 0.001Ω / sq-30Ω / sq, and the thickness range of the nested ring structure Low-E film is 5nm-3μm. When the conductive film is in this range, the loss performance is weak and it is easier to achieve wide-band electromagnetic transmittance performance.

[0066] Furthermore, the ring structure unit may be a circular ring, an equilateral triangle, a rectangle or a regular polygon, and the number of sides of the regular polygon is at least 4.

[0067] Preferably, when the ring structure unit is a circular ring, the ratio of the outer diameter of the circular ring to the width of adjacent gaps in the array is ≥1, that is, the ratio of the outer diameter of the circular ring to the distance between the centers of adjacent gaps in the array is ≥1, so that each ring structure unit is interconnected, thereby increasing the electromagnetic transmittance effect.

[0068] Preferably, when the ring structure unit is an equilateral triangle, the ratio of the side length of the triangle to the width of adjacent gaps in the array is ≥1, that is, the ratio of the side length of the triangle to the distance between the centers of adjacent gaps in the array is ≥1, so that each ring structure unit is interconnected, thereby increasing the electromagnetic transmittance effect.

[0069] Preferably, when the ring structure unit is a rectangle, the ratio of the length or width of the rectangle to the width of adjacent gaps in the array is ≥1, that is, when the matrix is ​​placed horizontally, the ratio of the length of the rectangle to the distance between the centers of adjacent gaps in the array is ≥1, so that the various ring structure units are interconnected; when the rectangle is placed vertically, the ratio of the width of the rectangle to the distance between the centers of adjacent gaps in the array is ≥1, so that the various ring structure units are interconnected, thereby increasing the electromagnetic transmittance effect.

[0070] Preferably, when the ring structure unit is a regular polygon and the number of sides of the regular polygon is an even number, the ratio of the diameter of the circumscribed circle of the ring structure unit to the width of adjacent gaps in the array is ≥1, and the various ring structure units are interconnected; that is: the ratio of the diameter of the circumscribed circle of the ring structure unit to the distance between the centers of adjacent gaps in the array is ≥1, and at the same time, the various ring structure units need to be interconnected, thereby increasing the electromagnetic transmittance effect.

[0071] Preferably, when the number of sides of the regular polygon is an odd number, the width ratio of the line connecting any vertex in the regular polygon to the farthest symmetrical position and the adjacent gaps in the array is ≥1, that is, the distance ratio of the line connecting any vertex in the regular polygon to the farthest symmetrical position and the centers of adjacent gaps in the array is ≥1, so that each ring structure unit is interconnected, thereby increasing the electromagnetic transmittance effect.

[0072] The non-etched area is a uniform Low-E film, that is, the uniform Low-E film is covered on the flexible substrate layer, and the optical adhesive layer is covered on the uniform Low-E film, so that the UV cutoff limit of the formed conductive coating is around 300nm, and it exhibits high transparency in the visible light band. It effectively reflects infrared rays while protecting against ultraviolet rays. The optical adhesive layer is further covered on the uniform Low-E film, so that the light scattering at the interface can be reduced. At the same time, the adhesive layer covers the Low-E grid to improve the roughness of the film surface and further reduce the scattering of light. Thereby effectively ensuring the clarity of observation through the structure. It avoids the problem of high-order diffraction caused by the use of microstructures in the prior art, which leads to unclear imaging and easily causes visual fatigue of the driver.

[0073] Further, preferably, the non-etched area film can also be implemented by another embodiment, where a plurality of uniform Low-E films are covered on the flexible substrate layer in an evenly spaced manner, and an optical adhesive layer is covered on the plurality of uniform Low-E films. Since the conductive layer formed by the plurality of uniform Low-E films being covered on the flexible substrate layer in an evenly spaced manner is a grid structure, the grid structure has a higher haze, which is caused by the concentration of the scattered higher-order diffraction of the microstructure. Through analysis, it can be seen from this embodiment that the main reason affecting this phenomenon is that the refractive index of the Low-E film layer and the air is quite different. The refractive index of the optical adhesive layer is closer to the refractive index of the air than that of the Low-E film layer. Therefore, this embodiment reduces the light scattering at the interface by filling the gaps between the Low-E films with the optical adhesive layer. At the same time, the optical adhesive layer covering the Low-E grid improves the roughness of the film surface and further reduces the scattering of light. Thereby effectively ensuring the clarity of observation through the structure.

[0074] Preferably, the side length of the Low-E film layer is 0.1 mm to 30 mm, and the width of the gap between adjacent structural units is 0.001 mm to 1 mm.

[0075] Implementation Method 2: See Figures 2 to 6 This embodiment is described. This embodiment is an example of the ring structure unit in the nested ring structure transparent conductive film described in the first embodiment.

[0076] When the ring structure unit is a ring:

[0077] Specifically, multiple rings are arranged in an array on the flexible base layer to form a Figure 2 The nested circular ring structure Low-E film shown in the figure, in which the ratio of the outer diameter c of the circular ring to the width a of the adjacent gap in the array is ≥1, so that strong electromagnetic shielding is transformed into electromagnetic transmittance. This phenomenon is because when the outer diameter c of the circular ring is greater than or equal to the width a of the adjacent gap, the grooves of the structure are interconnected, resulting in an anti-transmission effect on electromagnetic waves.

[0078] Preferably, when the outer diameter c of the ring is too small, the filling rate of the film will be too low, and the energy saving effect cannot be guaranteed. Therefore, the outer diameter c of the ring is in the range of 0.1-150 mm. The width a of adjacent gaps in the array is 0.1-50 mm.

[0079] Preferably, the line width w of the ring is in the range of 1 μm-3 mm. When the processing accuracy is close to 1 micron, the effect of the film gap on vision is almost negligible. However, when the structure line width is lower than 1 μm, it will match the wavelength of visible light and cause glare. Considering the actual processing accuracy and visual requirements, the line width can be relaxed to 3 mm, but should not be enlarged further.

[0080] Furthermore, the simulation effect of the nested ring structure Low-E film is verified; the transmission performance of different ring structures is studied by full-wave simulation. Figure 3 The simulation results are shown in Figure 4 As shown, from Figure 4 It can be seen that as c / a increases from 0.5 to 3, the transmittance of the structure changes from -30dB to 0dB. It is worth noting that when the structure changes from c / a=0.9 to c / a=1, the electromagnetic transmission performance jumps from -12dB at c / a=0.9 to -0.78dB at c / a=1. That is, it changes from strong electromagnetic shielding to electromagnetic transmission. This jump phenomenon is due to the fact that when the outer diameter c of the ring is greater than or equal to the width a of the adjacent gaps, the grooves of the structure are interconnected, resulting in an enhanced transmittance effect on electromagnetic waves. When the c / a value of the structure increases further, the transmittance of the structure stabilizes within -1dB. That is to say, when c / a is greater than or equal to 1, the structure still maintains the electromagnetic transmission characteristics. At the same time, due to the narrow gaps in the structure, the overall filling rate of the film is guaranteed, so the structure exhibits low-E characteristics, which can effectively achieve energy saving.

[0081] Furthermore, this embodiment also illustrates the working principle of the nested ring structure Low-E film by analyzing the surface current distribution of structures with different c / a parameters when 4 GHz electromagnetic waves are incident, such as Figure 5 and Figure 6 As shown, from Figure 5 It can be seen from the figure that when c / a = 0.5, a strong resonant current appears around the ring when the plane wave is incident. The directional flow of the strong current causes the electromagnetic wave to be radiated twice. That is, the electromagnetic wave is reflected and cannot penetrate the structure. Figure 6 It can be seen that when c / a=1.03, it is slightly larger than c / a=1, and the surface current of the structure is very weak. This shows that the structure responds very weakly under the plane wave incident condition, so that the structure achieves electromagnetic transmission performance. And this performance of reducing surface current to achieve electromagnetic transmission is achieved by connecting the unit structures.

[0082] Implementation method three, see Figures 7 to 9 This embodiment is described. This embodiment is an example of the ring structure unit in the nested ring structure transparent conductive film described in the first embodiment.

[0083] When the ring structure unit is an equilateral triangle:

[0084] Specifically, a plurality of triangles are arranged in an array on the flexible base layer to form a Figure 7 The nested triangular structure Low-E film shown in the figure, in which the ratio of the side length c of the triangle to the width a of the adjacent gap in the array is ≥1, so that strong electromagnetic shielding is transformed into electromagnetic transmittance. This phenomenon is because when the side length c of the triangle is greater than or equal to the width a of the adjacent gap, the grooves of the structure are interconnected, resulting in an anti-transmission effect on electromagnetic waves.

[0085] Furthermore, the simulation effect of the nested triangle structure Low-E film is verified. The transmission performance of different ring structures is studied by full-wave simulation. Figure 8 The simulation results are shown in Fig. 9 As shown, from Fig. 9 It can be seen that as c / a increases from 0.5 to 3, the transmittance of the structure changes from -30dB to 0dB. It is worth noting that when the structure changes from c / a=0.9 to c / a=1, the electromagnetic transmission performance jumps from -13dB at c / a=0.9 to -0.5dB at c / a=1. That is, it changes from strong electromagnetic shielding to electromagnetic transmission. This jump phenomenon is due to the fact that when the side length c of the triangle is greater than or equal to the width a of the adjacent gaps, the grooves of the structure are interconnected, resulting in an enhanced transmittance effect on electromagnetic waves. When the c / a value of the structure increases further, the transmittance of the structure stabilizes within -1dB. That is to say, when c / a is greater than or equal to 1, the structure still maintains the electromagnetic transmission characteristics. At the same time, due to the narrow gaps in the structure, the overall filling rate of the film is guaranteed, so the structure exhibits low-E characteristics, which can effectively achieve energy saving.

[0086] Implementation method 4: See Figures 10 to 15 This embodiment is described. This embodiment is an example of the ring structure unit in the nested ring structure transparent conductive film described in the first embodiment.

[0087] When the ring structure unit is a square ring:

[0088] Specifically, a plurality of square rings are arranged in an array on the flexible substrate layer to form a Fig.10The nested square ring structure transparent Low-E film shown in the figure, wherein the ratio of the circumscribed circle diameter c of the square ring to the width a of the adjacent gaps in the array is ≥1, so that strong electromagnetic shielding is transformed into electromagnetic transmittance. This phenomenon is due to the fact that when the outer diameter c of the circular ring is greater than or equal to the width a of the adjacent gaps, the grooves of the structure are interconnected, resulting in an anti-transmission effect on electromagnetic waves.

[0089] Furthermore, the simulation effect verification of the nested square ring structure Low-E film is described; the transmission performance of different square ring structures is studied by full-wave simulation. For the convenience of simulation and description, c in this embodiment is the side length of the square ring, and the circumscribed circle diameter of the square ring can be obtained according to the side length of the square ring. Different square ring structures such as Fig.11 The simulation results are shown in Fig.12 As shown, from Fig.12 It can be seen that as c / a increases from 0.5 to 3, the transmittance of the structure changes from -30dB to 0dB. Especially when c / a≥ When the ratio of the circumscribed circle diameter of the square ring to the width of the adjacent gap in the array is ≥ 1, the square ring structures are interconnected, thereby achieving an electromagnetic transmittance close to 0. Further, in order to verify that the rotation direction does not affect the electromagnetic transmittance of the square structure, the square structure is rotated 60° to form the following Fig.13 The nested square ring structure Low-E film shown in the figure also uses full-wave simulation to study the transmission performance of different square ring structures. Fig.14 The simulation results are shown in Fig.15 As shown, from Fig.15 It can be seen that the structure also has a similar effect. (The ratio of the diameter of the circumscribed circle of the square ring to the width of the adjacent gap in the array ), the square ring structures are interconnected, thus achieving an electromagnetic transmittance close to 0.

[0090] Implementation method 5: See Figures 16 to 18 This embodiment is described. This embodiment is an example of the ring structure unit in the nested ring structure transparent conductive film described in the first embodiment.

[0091] When the ring structure unit is a regular polygon and the number of sides of the regular polygon is an odd number, an example is given when the ring structure unit is a pentagon;

[0092] Specifically, a plurality of pentagons are arranged in an array on the flexible substrate layer to form a Fig.16 The nested pentagonal structure Low-E film shown in the figure, in which the width ratio of the line connecting any vertex in the pentagon to the symmetrical position farthest from it to the adjacent gap in the array is ≥1, so that strong electromagnetic shielding is transformed into electromagnetic transmission. This phenomenon is due to the fact that the grooves of the structure are interconnected, resulting in an anti-transmission effect on electromagnetic waves.

[0093] Furthermore, the transmission performance of different square ring structures is studied by full-wave simulation. For the convenience of simulation and description, c in this embodiment is the side length of the pentagon. The length of the line from any vertex in the pentagon to the farthest symmetrical position can be obtained according to the side length of the pentagon. Different pentagon structures such as Fig.17 The simulation results are shown in Fig.18 As shown, from Fig.18 It can be seen that as c / a increases from 0.5 to 3, the transmittance of the structure changes from -30dB to 0dB. Especially when c / a ≥ 0.5 (the ratio of the length of the line from any vertex in the pentagon to the farthest symmetrical position to the width of the adjacent gap ≥ 0.81 / 0.5), the pentagonal structures are interconnected, thus achieving an electromagnetic transmittance close to 0.

[0094] Embodiment 6: This embodiment is an example of the thickness of the optical adhesive layer, the Low-E film and the flexible base layer in the anti-glare Low-E vehicle film described in Embodiment 1;

[0095] The thickness of the optical adhesive layer is 10μm-2mm;

[0096] The thickness of Low-E film is 20nm-5μm;

[0097] The thickness of the flexible substrate layer is 100 μm-3 mm;

[0098] In actual application of this embodiment, changes in the thickness of the optical adhesive layer and the flexible substrate layer can affect the visible light transmittance of the structure. Specifically, the thickness of the Low-E film layer will seriously affect the infrared low-radiation performance and visible light transmittance. The higher the thickness of the conventional Low-E film layer, the lower the visible light transmittance and the better the infrared low-radiation performance. According to energy calculations, different regions have different requirements for visible light transmittance and infrared low-radiation performance. Therefore, this embodiment sets the thickness of the Low-E film to 20nm-5μm and the thickness of the flexible substrate layer to 100μm-3mm; it is achieved by controlling the thickness of the Low-E film layer to achieve optical performance regulation.

[0099] Embodiment 7: This embodiment is an example of the material of the optical adhesive layer in the anti-glare Low-E vehicle film described in Embodiment 1;

[0100] The optical adhesive layer is made of any one of organic silicon rubber, acrylic resin, unsaturated polyester, polyurethane or epoxy resin.

[0101] In practical application, this embodiment uses any one of silicone rubber, acrylic resin, unsaturated polyester, polyurethane or epoxy resin as an optical adhesive layer, which covers the Low-E layer, so that light scattering at the interface can be reduced. At the same time, the adhesive layer covers the Low-E grid to improve the roughness of the film surface and further reduce light scattering. This effectively ensures the clarity of observation through the structure.

[0102] Embodiment 8: Embodiment 1 is an example of the material of the 5G anti-reflection Low-E layer described in Embodiment 1;

[0103] The 5G anti-reflection Low-E layer adopts any one of ITO, Ag, In2O3, CdO, SnO2, ZnO, TiO2 and Si3N4 or a combination of several thereof.

[0104] In practical application, the 5G anti-reflection Low-E layer, i.e., the nested ring structure Low-E film and the uniform Low-E film, can be realized by using any one or a combination of ITO, Ag, In2O3, CdO, SnO2, ZnO, TiO2 and Si3N4 to form a conductive coating with a UV cutoff limit of about 300nm and high transparency in the visible light band, thereby effectively reflecting infrared rays and protecting against ultraviolet rays.

[0105] Embodiment 9: Embodiment 1 is an example of the material of the flexible base layer described in Embodiment 1;

[0106] The flexible substrate layer is made of PVA, PET, PVC, PDMS, PI, PEN, PU or TPC optically transparent flexible material.

[0107] Embodiment 10. This embodiment provides a vehicle window, in which a nested ring structure Low-E film is selected in the nested ring structure area around the vehicle window and the microwave skylight area behind the rearview mirror, and the rest of the vehicle window is a uniform Low-E vehicle film in the non-etched area, and the vehicle film is affixed to the inside of the vehicle window.

[0108] In actual application of this embodiment, the microwave skylight area is usually located behind the reflector on the upper part of the front windshield. This area is usually 120 mm long and 70 mm wide, and is used exclusively for automotive electronic tags, including ETC electronic tags, automatic toll parking electronic tags, etc. The microwave skylight area is used to achieve signal communication. Therefore, a nested ring structure Low-E film is selected in the microwave skylight area around the car window and behind the rearview mirror to achieve the transmission of communication signals, and it cannot be blocked by brackets such as rain sensors and lane offsets. The rest of the car window is a uniform Low-E car film in the non-etched area. The non-etched area serves as the driver's visual window area, which solves the problem of visual fatigue for the driver.

[0109] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An anti-glare Low-E car film, characterized in that: The vehicle film includes a flexible base layer, a 5G anti-reflection Low-E layer, and an optical adhesive layer; The 5G anti-reflection Low-E layer includes a nested ring structure area and a non-etched area; The nested ring structure region is a nested ring structure Low-E film; The nested ring structure Low-E film is composed of a plurality of ring structure units arranged in an array, and each ring structure unit is interconnected; The non-etched area is a uniform Low-E film; The nested ring Low-E film and the uniform Low-E film are both covered on the flexible base layer, and the optical adhesive layer is covered on the nested ring Low-E film and the uniform Low-E film.

2. The anti-glare Low-E vehicle film according to claim 1, characterized in that: The ring structure unit is a ring, an equilateral triangle, a rectangle or a regular polygon, and the number of sides of the regular polygon is at least 4; When the ring structure unit is a circular ring, the ratio of the outer diameter of the circular ring to the width of the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected; When the ring structure unit is an equilateral triangle, the ratio of the side length of the triangle to the width of the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected; When the ring structure unit is a rectangle, the ratio of the length or width of the rectangle to the width of the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected; When the ring structure unit is a regular polygon and the number of sides of the regular polygon is an even number, the ratio of the diameter of the circumscribed circle of the ring structure unit to the width of the adjacent gap in the array is ≥1, and the ring structure units are interconnected; When the ring structure unit is a regular polygon and the number of sides of the regular polygon is an odd number, the width ratio of the line connecting any vertex in the regular polygon to the symmetrical position farthest from it to the adjacent gap in the array is ≥1, so that each ring structure unit is interconnected.

3. The anti-glare Low-E vehicle film according to claim 2, characterized in that: The outer diameter c of the ring is 0.1-150 mm, and the width a of adjacent gaps in the array is 0.1-50 mm.

4. The anti-glare Low-E vehicle film according to claim 2, characterized in that: The line width w of the ring is 1μm-3mm.

5. The anti-glare Low-E vehicle film according to claim 2, characterized in that: The surface resistance range of the nested ring structure Low-E film is 0.001Ω / sq-30Ω / sq, and the thickness range of the nested ring structure Low-E film is 5nm-3μm.

6. The anti-glare Low-E vehicle film according to claim 1, characterized in that: The thickness of the flexible substrate layer is 100 μm-3 mm; The thickness of the optical adhesive layer is 10μm-2mm; The thickness of Low-E film is 20nm-5μm.

7. The anti-glare Low-E vehicle film according to claim 1, characterized in that: The optical adhesive layer is made of any one of organic silicon rubber, acrylic resin, unsaturated polyester, polyurethane or epoxy resin.

8. The anti-glare Low-E vehicle film according to claim 1, characterized in that: The material of the 5G anti-reflection Low-E layer is any one of ITO, Ag, In2O3, CdO, SnO2, ZnO, TiO2 and Si3N4, or a combination of several of them.

9. The anti-glare Low-E vehicle film according to claim 1, characterized in that: The flexible substrate layer is made of PVA, PET, PVC, PDMS, PI, PEN, PU or TPC optically transparent flexible material.

10. A vehicle window implemented with an anti-glare Low-E vehicle film as claimed in any one of claims 1 to 9, characterized in that: The nested ring structure Low-E film in the nested ring structure area is used around the car windows and the microwave sunroof area behind the rearview mirror. The rest of the car window is a uniform Low-E car film in the non-etched area, and the car film is affixed to the inside of the car window.

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