Power-on dimming film with high weather resistance

Abstract

The utility model discloses an electrified dimming film with strong weather resistance, which relates to the technical field of electrified dimming films, and comprises a core layer, the core layer comprises a liquid crystal dimming layer, the top of the core layer is provided with a weather resistance enhancement layer, and the weather resistance enhancement layer comprises an ultraviolet absorption layer and a heat insulation layer. According to the utility model, the weather-resistant enhancement layer comprises the ultraviolet ray absorption layer and the heat insulation layer, so that ultraviolet rays can be effectively absorbed through the ultraviolet ray absorption layer, and the heat insulation layer can effectively prevent external heat from being transferred inwards, so that the internal temperature of the dimming film is reduced; the liquid crystal dimming layer and other internal materials are protected from being damaged by ultraviolet rays and influenced by high temperature, meanwhile, the protective layer and the sealing layer can effectively prevent impurities such as external moisture and air from entering the dimming film, so that the internal structure and electronic elements of the dimming film can be protected, the dimming film can be better used, and the service life of the dimming film is prolonged. Therefore, the service life of the dimming film is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric dimming films, in particular to an electric dimming film with strong weather resistance. Background Art

[0002] Power-on dimming film, also known as dimming film or PDLC film, is a film that can control the transmittance of light by adjusting the electric field. The basic principle of power-on dimming film lies in the interaction between the liquid crystal droplets and the polymer network inside it. When the film is powered off, the polymer liquid crystal material is arranged in a disordered manner, blocking light from penetrating the film, and it appears milky white and opaque. When the film is powered on, the polymer liquid crystal material is arranged in an orderly manner under the action of the electric field, allowing light to pass through the film, and it appears transparent and colorless.

[0003] Power-on dimming film is an advanced material with many advantages, such as adjustable transparency, providing better privacy protection and sunshade effects; automatic sensing function, improving ease of use; good sound insulation effect, improving indoor comfort, etc., which makes it widely used in many fields such as automobiles, construction, electronics, etc. However, power-on dimming film also has disadvantages such as high price, difficult construction and difficult maintenance, so care should be taken when using it.

[0004] The current power-on dimming film is usually composed of a transparent conductive film, a liquid crystal polymer mixed material and a protective film. However, after long-term use, the power-on dimming film will be damaged due to the influence of high temperature, ultraviolet rays, etc., thereby affecting the service life of the power-on dimming film. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide an electric dimming film with strong weather resistance to solve the technical problem that after long-term use of the electric dimming film, it will be damaged by high temperature, ultraviolet rays, etc., thereby affecting the service life of the electric dimming film.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a highly weather-resistant electric dimming film, comprising a core layer, the core layer comprising a liquid crystal dimming layer, a weather-resistant reinforcement layer arranged on the top of the core layer, the weather-resistant reinforcement layer comprising an ultraviolet absorption layer and a heat-insulating layer, the ultraviolet absorption layer being located on the outside of the liquid crystal dimming layer, the heat-insulating layer being located on the outside of the ultraviolet absorption layer, a protective layer being arranged on the top of the weather-resistant reinforcement layer, the protective layer comprising a waterproof and breathable layer, sealing layers being arranged on both sides of the core layer, the weather-resistant reinforcement layer and the protective layer, and a hard coating being arranged on the top of the sealing layer.

[0007] By adopting the above technical scheme, the ultraviolet absorption layer can effectively absorb ultraviolet rays, the heat insulation layer can effectively block the transmission of external heat to the inside, the internal temperature of the dimming film is reduced, the liquid crystal dimming layer and other internal materials are protected from ultraviolet damage and high temperature influence, the setting of the protective layer and the sealing layer can effectively prevent moisture, air and other impurities in the outside from entering the inside of the dimming film, thereby protecting the internal structure and electronic components, and the dimming film can be better used, thereby prolonging the service life of the dimming film.

[0008] The utility model further sets up, the liquid crystal dimming layer includes two layers of transparent conductive film, two layers of the transparent conductive film are located liquid crystal dimming layer's upside and upside respectively.

[0009] By adopting the above technical scheme, the tight combination of the transparent conductive film and the liquid crystal dimming layer forms an electric field, the arrangement direction of liquid crystal molecules is changed by controlling voltage, and the transparent and fogging conversion can be realized quickly.

[0010] The utility model further sets up, the ultraviolet absorption layer adopts super ultraviolet protection film layer.

[0011] By adopting the above technical scheme, the super ultraviolet protection film layer has very high ultraviolet blocking rate, can effectively protect the liquid crystal molecules from the damage of ultraviolet rays, and prolong the service life of the dimming film.

[0012] The utility model further sets up, the heat insulation layer adopts multilayer special metal compound film.

[0013] By adopting the above technical scheme, the metal compound film has excellent heat insulation performance, can effectively reduce the transmission of infrared rays, reduce the temperature of the film surface, and improve the weather resistance and service life of the dimming film.

[0014] The utility model further sets up, the waterproof air-permeable layer is provided with microporous air-permeable film.

[0015] By adopting the above technical scheme, the microporous air-permeable film has very small pore size, can effectively prevent moisture from entering the film, protect sensitive components from liquid erosion, improve the service life and reliability of the product, maintain the air pressure balance inside and outside the film, and prevent the film from deforming or breaking due to air pressure difference.

[0016] The utility model further sets up, the sealing layer is provided with "concave" type structure, a group of the sealing layer is provided with coating layer in the middle, and the coating layer adopts nanometer coating.

[0017] By adopting the above technical solution, it is possible to effectively prevent external water vapor, dust and other impurities from entering the dimming film, thereby protecting the components inside the dimming film. At the same time, the coating layer between the sealing layers can enhance the sealing effect of the sealing layer and increase the flatness of its top and bottom, making it easier to use the dimming film.

[0018] The present invention is further configured such that the hard coating is made of silicon-based or fluorine-based materials.

[0019] By adopting the above technical solution, the hardness and wear resistance of the coating can be significantly improved, so that it can better resist external impact and wear, thereby extending the service life of the power-on dimming film.

[0020] In summary, the present invention has the following beneficial effects:

[0021] The utility model sets the weather resistance enhancement layer as an ultraviolet absorption layer and a heat insulation layer, so that the ultraviolet rays can be effectively absorbed by the ultraviolet absorption layer, and the heat insulation layer can effectively block the external heat from being transferred inward, thereby reducing the internal temperature of the dimming film, thereby protecting the liquid crystal dimming layer and other internal materials from ultraviolet damage and high temperature. At the same time, the setting of the protective layer and the sealing layer can effectively prevent external moisture, air and other impurities from entering the interior of the dimming film, thereby protecting its internal structure and electronic components. Therefore, the dimming film can be better used, thereby extending the service life of the dimming film. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the material structure of the present utility model.

[0023] In the figure: 1. Liquid crystal dimming layer; 2. Transparent conductive film; 3. Ultraviolet absorption layer; 4. Heat insulation layer; 5. Waterproof and breathable layer; 6. Sealing layer; 7. Coating layer; 8. Hard coating layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] The following describes an embodiment of the present invention based on its overall structure.

[0026] A weather-resistant power-on dimming film, such as Figure 1As shown, it includes a core layer, and the core layer includes a liquid crystal dimming layer 1. The liquid crystal dimming layer 1 uses high-performance liquid crystal materials to make it have the characteristics of fast response and stable arrangement to improve the dimming speed and clarity. The liquid crystal dimming layer 1 includes two layers of transparent conductive films 2. The two layers of transparent conductive films 2 are respectively located on the upper side and the lower side of the liquid crystal dimming layer 1. The electric field can be formed by the close structure of the liquid crystal dimming layer 1 and the transparent conductive film 2, so that the arrangement direction of the liquid crystal molecules can be changed by controlling the voltage, and the conversion between transparency and atomization can be quickly realized, so the use of the powered dimming film can be realized.

[0027] Then, a weather-resistant enhancement layer is arranged on the top of the core layer. The weather-resistant enhancement layer includes an ultraviolet absorption layer 3 and a heat-insulating layer 4. The ultraviolet absorption layer 3 is located on the outside of the liquid crystal dimming layer 1, and the ultraviolet absorption layer 3 adopts an ultra-ultraviolet protection film layer, so that the ultraviolet absorption layer 3 can effectively absorb ultraviolet rays, protect the liquid crystal dimming layer 1 and other internal materials from ultraviolet damage, thereby extending the service life of the dimming film. The heat-insulating layer 4 is located on the outside of the ultraviolet absorption layer 3, and the heat-insulating layer 4 adopts a multi-layer special metal compound film, which can effectively block the external heat from being transferred to the inside, reduce the internal temperature of the dimming film, protect the liquid crystal dimming layer 1 and other electronic components from high temperature, and improve the stability and reliability of the product.

[0028] A protective layer is provided on the top of the weather-resistant reinforcement layer, which protects other film layers in the dimming film. The protective layer is included in the waterproof and breathable layer 5, and the waterproof and breathable layer 5 is set to a microporous breathable film. The microporous breathable film has an extremely small pore size, which can effectively prevent moisture from invading the film, protect sensitive components from liquid erosion, and improve the service life and reliability of the product. At the same time, a sealing layer 6 is provided on both sides of the core layer, the weather-resistant reinforcement layer and the protective layer. The sealing layer 6 can prevent moisture, air and other impurities from entering the interior of the dimming film. A hard coating layer 8 is provided on the top of the sealing layer 6, and the hard coating layer 8 adopts a silicon-based or fluorine-based material, which can significantly improve the hardness and wear resistance of the hard coating layer 8, so that it can better resist external impact and wear, thereby extending the service life of the power-on dimming film.

[0029] The sealing layer 6 is further set to a "concave" shape structure, so as to better protect each layer of film material in the powered dimming film. A coating layer 7 is set in the middle of a group of sealing layers 6. The coating layer 7 adopts a nano-coating, which can increase the sealing effect of the sealing layer 6 and increase the flatness of the top and bottom of the sealing layer 6 to avoid affecting the use of the dimming film.

[0030] In this embodiment, the total number of layers of the dimming film is eight, which are, from the inside to the outside, a liquid crystal dimming layer 1, a transparent conductive film 2, a UV absorption layer 3, a heat insulation layer 4, a waterproof and breathable layer 5, a sealing layer 6, a coating layer 7, and a hard coating layer 8. The layers are tightly bonded together by high-performance adhesives to ensure the overall performance and stability of the dimming film. At the same time, the eight-layer design of the dimming film gives it excellent weather resistance, heat insulation, UV protection, and scratch and friction resistance, which helps to extend the service life of the dimming film.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A highly weather-resistant power-on dimming film, comprising a core layer, wherein the core layer comprises a liquid crystal dimming layer (1), characterized in that: A weather-resistant reinforcement layer is provided on the top of the core layer, the weather-resistant reinforcement layer comprising an ultraviolet absorption layer (3) and a heat-insulating layer (4), the ultraviolet absorption layer (3) is located on the outside of the liquid crystal dimming layer (1), and the heat-insulating layer (4) is located on the outside of the ultraviolet absorption layer (3), a protective layer is provided on the top of the weather-resistant reinforcement layer, the protective layer comprising a waterproof and breathable layer (5), sealing layers (6) are provided on both sides of the core layer, the weather-resistant reinforcement layer and the protective layer, and a hard coating layer (8) is provided on the top of the sealing layer (6).

2. The weather-resistant power-on dimming film according to claim 1, characterized in that: The liquid crystal dimming layer (1) comprises two layers of transparent conductive films (2), and the two layers of transparent conductive films (2) are respectively located on the upper side and the upper side of the liquid crystal dimming layer (1).

3. The weather-resistant power-on dimming film according to claim 1, characterized in that: The ultraviolet absorption layer (3) adopts an ultra-ultraviolet protection film layer.

4. The weather-resistant power-on dimming film according to claim 1, characterized in that: The heat insulation layer (4) is made of a multi-layer metal compound film.

5. The weather-resistant power-on dimming film according to claim 1, characterized in that: The waterproof and breathable layer (5) is configured as a microporous breathable membrane.

6. The weather-resistant power-on dimming film according to claim 1, characterized in that: The sealing layer (6) is arranged in a concave-shaped structure, and a coating layer (7) is arranged in the middle of a group of the sealing layers (6), and the coating layer (7) adopts a nano coating.

7. The weather-resistant power-on dimming film according to claim 1, characterized in that: The hard coating (8) is made of silicon-based or fluorine-based material.

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