Gradient color film
By adopting a combined structure of PET layer, ITO electrode layer and electrochromic film in the gradient film, and adjusting the voltage value with a voltage controller, the gradient effect is achieved, and the problems of color stability and uniformity are solved, the preparation cost is reduced, and it is suitable for industrial production.
Patent Information
- Application Number
- CN202422382876.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the prior art realizes a gradient film, it is difficult to ensure color stability, uniformity, weather resistance, corrosion resistance and mechanical strength at the same time, and the preparation cost is high, making it difficult to achieve large-scale industrial production.
Using a structure consisting of a first PET layer, a first transverse ITO electrode layer, an electrochromic film, a second vertical ITO electrode layer and a second PET layer, different voltages are input to each electrode through the voltage controller, and the voltage values of different regions of the electrochromic film are changed to achieve a gradient color effect.
The effect of gradient film is achieved through voltage control, with strong color stability and uniformity, good visual effect, and reduced preparation costs, which is suitable for large-scale industrial production.
Smart Images
Figure CN223051620U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of optical thin films, and particularly relates to a gradient color thin film. Background Art
[0002] With the progress of technology and the improvement of consumers' aesthetic level, gradient color thin films are increasingly widely used in fields such as electronic products, decorative materials, and artworks. The market demand for gradient color thin films with unique visual effects, high performance, and stability is constantly increasing.
[0003] Certain progress has been made in the research on controllable gradient color thin films, but many challenges still remain. There are also problems such as how to further improve the color stability and uniformity of the thin film, reduce the preparation cost, and achieve large-scale industrial production. In addition, with the continuous expansion of the application fields, the performance requirements for gradient color thin films are also getting higher and higher, such as better weather resistance, corrosion resistance, mechanical strength, etc.
[0004] The utility model patent with the patent publication number CN208327834U discloses a gradient electrochromic glass, including: a first glass substrate and a second glass substrate arranged opposite to each other; a first transparent conductive layer, an electrochromic material layer, and a second transparent conductive layer which are located between the first glass substrate and the second glass substrate and are arranged in sequence along the direction from the first glass substrate towards the second glass substrate; wherein, the second transparent conductive layer has a gradient grid pattern; by setting the transparent conductive layer with a gradient grid pattern, the resistance of the transparent conductive layer increases or decreases from one side of the surface of the glass substrate to the other side, so as to change the resistance of different regions of the transparent conductive layer, and when an external voltage is applied, the current in the energized region changes uniformly to achieve a gradient effect.
[0005] The existing technology has too high requirements for the resistance of the transparent conductive layer, and the utility model provides another technical solution for realizing a gradient thin film. Summary of the Utility Model
[0006] Aiming at the defects in the prior art, the purpose of the utility model is to provide a gradient color thin film.
[0007] According to the gradient color thin film provided by the utility model, the gradient color thin film includes, from top to bottom: a first PET layer 1, a first horizontally cut ITO electrode layer 2, an electrochromic thin film 3, a second vertically cut ITO electrode layer 4, and a second PET layer 5;
[0008] Wherein, the first PET layer 1 is adhered to the first horizontally cut ITO electrode layer 2, the second vertically cut ITO electrode layer 4 is adhered to the second PET layer 5, and the electrochromic thin film 3 is arranged between the first horizontally cut ITO electrode layer 2 and the second vertically cut ITO electrode layer 4.
[0009] Preferably, the first PET layer 1, the first cross-cut ITO electrode layer 2, the electrochromic thin film 3, the second vertical-cut ITO electrode layer 4, and the second PET layer 5 are sequentially cured and bonded.
[0010] Preferably, the thicknesses of the first PET layer and the second PET layer are both 50 - 300 um.
[0011] Preferably, both the first cross-cut ITO electrode layer 2 and the second vertical-cut ITO electrode layer 4 are rectangular electrodes.
[0012] Preferably, in the projection along the thickness direction of the gradient color thin film, an extension part extending outward in the length or width direction of the rectangular electrode is provided on the side of the rectangular electrode with respect to the electrochromic thin film 3 and the first PET layer 1.
[0013] Preferably, the extension part is connected to an external power electrode; the voltage of the external power supply is 10 - 220V;
[0014] The size of the extension part is 3 - 5 mm.
[0015] Preferably, the number of both the first cross-cut ITO electrode layer 2 and the second vertical-cut ITO electrode layer 4 is not less than 2.
[0016] Preferably, when the electrochromic thin film 3 is connected to an external alternating voltage, the transmittance change range is 0.01 - 90%.
[0017] Preferably, the thicknesses of both the first cross-cut ITO electrode layer and the second vertical-cut ITO electrode layer are 20 - 300 nm.
[0018] Preferably, the thickness of the electrochromic thin film 3 is 100 - 300 nm.
[0019] Compared with the prior art, the present utility model has the following beneficial effects:
[0020] By inputting different voltages to each electrode through a voltage controller, thereby changing the voltage values transmitted by ITO in different regions to the electrochromic thin film. Due to the different voltage values, the electrochromic thin film will also show different transmittance changes. The higher the applied voltage value, the higher the transmittance will become. By changing the voltage input to different electrodes, the electrochromic thin film will show different transmittance changes, so as to achieve the effect of the gradient color thin film. Finally, a gradient color thin film that can be controlled by a voltage controller can be obtained. This gradient color thin film has strong color stability and uniformity, and good visual effects. Description of the Drawings
[0021] Other features, objects, and advantages of the present utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 is a schematic structural diagram of the present utility model;
[0023] Figure 2 is a three-dimensional structural diagram of the present utility model;
[0024] Figure 3 is a side three-dimensional structural diagram of the present utility model;
[0025] As shown in the figure:
[0026] The first PET layer 1, electrochromic thin film 3
[0027] The first horizontally cut ITO electrode layer 2, the second vertically cut ITO electrode layer 4
[0028] The second PET layer 5 Detailed implementation manners
[0029] The present utility model will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.
[0030] The present utility model provides a kind of gradient thin film as Figure 1 shown. The gradient thin film includes, from top to bottom, the first PET layer 1, the first horizontally cut ITO electrode layer 2, the electrochromic thin film 3, the second vertically cut ITO electrode layer 4, and the second PET layer 5. Among them, the first PET layer 1 is adhered to the first horizontally cut ITO electrode layer 2, the second vertically cut ITO electrode layer 4 is adhered to the second PET layer 5, and the electrochromic thin film 3 is adhered in the middle between the first horizontally cut ITO electrode layer 2 and the second vertically cut ITO electrode layer 4.
[0031] The first PET layer 1, the first horizontally cut ITO electrode layer 2, the electrochromic thin film 3, the second vertically cut ITO electrode layer 4, and the second PET layer 5 are sequentially and solidly bonded.
[0032] The thicknesses of the first PET layer and the second PET layer are both 50 - 300 um, the thicknesses of the first horizontally cut ITO electrode layer and the second vertically cut ITO electrode layer are both 20 - 300 nm, and the thickness of the electrochromic thin film 3 is 100 - 300 nm.
[0033] Both the first horizontally cut ITO electrode layer 2 and the second vertically cut ITO electrode layer 4 are in a rectangular shape. The rectangular electrodes extend 3 - 5 mm relative to the electrochromic film 3 and the first PET layer 1 or the second PET layer 5, and are used to connect to the external power electrodes.
[0034] More specifically, in the projection along the thickness direction of the gradient color film, on the side of the rectangular electrode, there is an extension part extending outward along the length or width direction of the rectangular electrode relative to the electrochromic film 3 and the first PET layer 1. The extension part is connected to the external power electrode; the size of the extension part is 3 - 5 mm.
[0035] The number of the first horizontally cut ITO electrode layer 2 and the second vertically cut ITO electrode layer 4 is generally more than 2, and different electrodes can be connected to different corresponding voltages. The electrodes of the first horizontally cut ITO electrode layer and the second vertically cut ITO electrode layer are generally externally connected to an alternating voltage between 10 - 220 V, and different voltages cause the transmittance of the electrochromic film 3 to change.
[0036] Under an externally connected alternating voltage, the transmittance change range of the electrochromic film 3 is about 0.01 - 90%, and as the voltage increases, the transmittance also increases.
[0037] In the present utility model, different voltages are input to each electrode through a voltage controller, thereby changing the voltage values transmitted from the ITO in different regions to the electrochromic film. Due to the different voltage values, the electrochromic film will also exhibit different transmittance changes. The higher the applied voltage value, the higher the transmittance will be. By changing the voltages input to different electrodes, the electrochromic film will show different transmittance changes, so as to achieve the effect of the gradient color film. Finally, a gradient color film that can be controlled by a voltage controller can be obtained. This gradient color film has strong color stability and uniformity, and good visual effects.
[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0039] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.
Claims
1. A gradient color film, characterized in that: The gradient color film comprises, from top to bottom: a first PET layer (1), a first cross-cut ITO electrode layer (2), an electrochromic film (3), a second vertical-cut ITO electrode layer (4) and a second PET layer (5); The first PET layer (1) is bonded to the first transversely cut ITO electrode layer (2), the second vertically cut ITO electrode layer (4) is bonded to the second PET layer (5), and the electrochromic film (3) is arranged between the first transversely cut ITO electrode layer (2) and the second vertically cut ITO electrode layer (4).
2. The gradient color film according to claim 1, characterized in that: The first PET layer (1), the first cross-cut ITO electrode layer (2), the electrochromic film (3), the second vertical-cut ITO electrode layer (4) and the second PET layer (5) are cured and bonded in sequence.
3. The gradient color film according to claim 1, characterized in that: The thickness of the first PET layer and the second PET layer are both 50-300 um.
4. The gradient color film according to claim 1, characterized in that: The first transverse ITO electrode layer (2) and the second vertical ITO electrode layer (4) are both rectangular electrodes.
5. The gradient color film according to claim 4, characterized in that: In the projection along the thickness direction of the gradient color film, the side of the rectangular electrode is provided with an extension portion extending outward along the length or width direction of the rectangular electrode relative to the electrochromic film (3) and the first PET layer (1).
6. The gradient color film according to claim 5, characterized in that: The extension part is connected to an external power supply electrode; the voltage of the external power supply is 10-220V; The size of the extension portion is 3 to 5 mm.
7. The gradient color film according to claim 1, characterized in that: The number of the first transverse ITO electrode layer (2) and the second vertical ITO electrode layer (4) is no less than 2.
8. The gradient color film according to claim 1, characterized in that: When the electrochromic film (3) is connected to an external alternating voltage, the transmittance changes in the range of 0.01 to 90%.
9. The gradient color film according to claim 1, characterized in that: The thickness of the first transverse ITO electrode layer and the second vertical ITO electrode layer are both 20-300 nm.
10. The gradient color film according to claim 1, characterized in that: The thickness of the electrochromic film (3) is 100-300 nm.
Citation Information
Patent Citations
Gradual change formula electrochromic glass
CN208327834U