CN111077714A - Color-changing decorative film and forming method thereof - Google Patents
Color-changing decorative film and forming method thereof Download PDFInfo
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- CN111077714A CN111077714A CN201911380461.5A CN201911380461A CN111077714A CN 111077714 A CN111077714 A CN 111077714A CN 201911380461 A CN201911380461 A CN 201911380461A CN 111077714 A CN111077714 A CN 111077714A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/1514—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
- G02F1/1523—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising inorganic material
- G02F1/1525—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising inorganic material characterised by a particular ion transporting layer, e.g. electrolyte
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/155—Electrodes
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- Inorganic Chemistry (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The present application relates to a color-changing decorative film and a method of forming the same, the color-changing decorative film including: the color film comprises a bearing layer and an electrochromic structure, wherein the bearing layer is prepared from a colored substrate, the electrochromic structure is formed on the bearing layer, and the electrochromic structure is sequentially laminated from bottom to top: a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer, and an upper electrode layer; the electrochromic layer generates the conversion between a faded state and a colored state under the action of an external electric field. The application provides a decorative film discolours includes the bearer layer of coloured substrate preparation, the bearer layer forms electrochromic structure including carrying first side and the second side that sets up mutually, on bearer layer first side and/or second side, electrochromic layer produces under the effect of external electric field and discolours the conversion between the state and the colored state. The electrochromic structure and the colored bearing layer are laminated, so that the color of the color-changing decorative film is richer, and color change is realized.
Description
Technical Field
The application relates to the field of color-changing decorative films, in particular to a color-changing decorative film and a forming method thereof.
Background
With the development of science and technology, the color-changing decorative film is widely applied to the surfaces of electronic products such as mobile phones and computers, household appliances such as refrigerators, air conditioners and washing machines, and products such as automobiles. The existing color-changing decorative film embodies various patterns and metal texture through gravure printing, or is directly decorated by metal materials or ceramics and other materials.
However, the color-changing decorative film on the cover plate of the existing electronic device has a single color and a monotonous appearance, and is difficult to meet higher requirements of users on aspects such as aesthetic appearance and artistic feeling of the electronic device.
Disclosure of Invention
In view of the above, it is necessary to provide a color-changing decorative film and a method for forming the same, which can solve the problems of the existing color-changing decorative film on the cover plate of an electronic device that the color is single and the appearance is monotonous.
A color-changing decorative film comprising:
a support layer prepared from a colored substrate;
an electrochromic structure formed on the carrier layer, the electrochromic structure having stacked in sequence: a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer, and an upper electrode layer; the electrochromic layer generates the conversion between a faded state and a colored state under the action of an external electric field.
In one embodiment, the color-changing decorative film further comprises: the surface of the texture layer is provided with a convex and/or concave micro-nano structure, and the texture layer is arranged on one side of the bearing layer far away from the electrochromic structure and/or one side of the electrochromic structure far away from the bearing layer.
In one embodiment, the color-changing decorative film further comprises: and the optical coating is arranged on one side of the texture layer, which is far away from the electrochromic structure.
In one embodiment, the electrochromic structures include at least two, and two electrochromic structures are distributed on different sides of the carrier layer.
In one embodiment, the electrochromic structure comprises at least two electrochromic structures, at least two electrochromic structures are stacked on each other, and the lower electrode layer of one electrochromic structure in the two adjacent stacked electrochromic structures is shared with the upper electrode layer of the other electrochromic structure.
In one embodiment, the upper electrode layer and the lower electrode layer are made of a transparent conductive material.
In one embodiment, the bottom layer of the color-changing decorative film further comprises an ink layer, and priming ink is arranged on the ink layer.
A method of forming a color changing decorative film, comprising:
providing a colored substrate, and preparing a bearing layer by using the colored substrate, wherein the bearing layer comprises a first side and a second side which are arranged oppositely;
forming an electrochromic structure on the first side and/or the second side, wherein the electrochromic structure is sequentially laminated with a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer and an upper electrode layer; the electrochromic layer is used for generating conversion between a fading state and a coloring state under the action of an external electric field.
In one embodiment, the method further comprises:
and forming a texture layer on one side of the bearing layer far away from the electrochromic structure and/or one side of the electrochromic structure far away from the bearing layer, wherein the surface of the texture layer is provided with a convex and/or concave micro-nano structure.
In one embodiment, the forming an electrochromic structure on the first side and/or the second side includes:
forming at least two of the electrochromic structures stacked on the first side and/or the second side; the lower electrode layer of one electrochromic structure is shared with the upper electrode layer of the other electrochromic structure in two adjacent electrochromic structures.
The color-changing decorative film and the forming method thereof comprise the following steps: a support layer prepared from a colored substrate; an electrochromic structure formed on the carrier layer, the electrochromic structure having stacked in sequence: a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer, and an upper electrode layer; the electrochromic layer generates the conversion between a faded state and a colored state under the action of an external electric field. The application provides a decorative film discolours includes the bearer layer of coloured substrate preparation, the bearer layer forms electrochromic structure including carrying first side and the second side that sets up mutually, on bearer layer first side and/or second side, electrochromic layer produces under the effect of external electric field and discolours the conversion between the state and the colored state. The electrochromic structure and the colored bearing layer are laminated, so that the color of the color-changing decorative film is richer, and color change is realized.
Drawings
FIG. 1a is a schematic structural view of a color-changeable decorative film according to an embodiment of the present disclosure;
FIG. 1b is a schematic structural view of a color-changing decorative film according to another embodiment of the present application;
FIG. 2a is a schematic structural view of a color-changing decorative film according to another embodiment of the present application;
FIG. 2b is a schematic structural view of a color-changing decorative film according to another embodiment of the present application;
FIG. 2c is a schematic structural view of a color-changing decorative film according to yet another embodiment of the present application;
FIG. 3a is a schematic structural view of a color-changing decorative film according to another embodiment of the present application;
FIG. 3b is a schematic structural view of a color-changing decorative film according to yet another embodiment of the present application;
fig. 4 is a flowchart illustrating a method for forming a color-changing decorative film according to an embodiment of the present disclosure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and in the accompanying drawings, preferred embodiments of the present application are set forth. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The present application provides a color-changing decorative film 1 comprising: the color film comprises a bearing layer 10 and an electrochromic structure 20, wherein the bearing layer 10 is prepared from a colored substrate, the electrochromic structure 20 is formed on the bearing layer 10, and the electrochromic structure 20 is sequentially laminated with: a lower electrode layer 210, an electrochromic layer 220, an electrolyte layer 230, an ion storage layer 240, and an upper electrode layer 250; the electrochromic layer 220 produces a transition between a faded state and a colored state under the influence of an applied electric field. As shown in fig. 1a, the carrier layer 10 may be disposed adjacent to the lower electrode layer 210, and as shown in fig. 1b, the carrier layer 10 may also be disposed adjacent to the upper electrode layer 250.
Specifically, the colored substrate forming the carrier layer 10 may be polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), Polycarbonate (PC), glass, organic glass, phosphate PI, or PMMA composite material, and preferably PET material. The bearing layer 10 can also cooperate with the optical coating layer, the ink layer and the electrochromic structure 20 to realize color change. The electrochromic structure 20 is sequentially laminated with: a lower electrode layer 210, an electrochromic layer 220, an electrolyte layer 230, an ion storage layer 240, and an upper electrode layer 250; the electrochromic layer 220 produces a transition between a faded state and a colored state under the influence of an applied electric field.
The upper electrode layer 250 and the lower electrode layer 210 may be made of other transparent conductive materials such as indium tin oxide, fluorine-doped tin oxide, and the like. The sheet resistance, thickness and light transmittance of the resistors in the upper electrode layer 250 and the lower electrode layer 210 all have an effect on the response time of the electrochromic structure 20. The square resistance of the resistor is less than 20 omega/sq, the thickness of the resistor is about 0.6-1 um, and the light transmittance of the resistor is not less than 90%. The upper electrode layer 250 and the lower electrode layer 210 may be deposited in a layered manner by magnetron sputtering, vacuum evaporation, or the like. When an external voltage is applied to the upper electrode layer 250 and the lower electrode layer 210, the electrochromic structure 20 will be switched from a faded state to a colored state.
Wherein, the electrochromic layer 220 is a mixture of electrons and ions, and an electric field is applied to the upper electrode layer 250 and the lower electrode layer 210, so that the ions in the electrochromic layer 220 are injected or extracted, and the electrochromic layer 220 undergoes a reversible change between a discolored state and a colored state. The material of the electrochromic layer 220 is classified into an organic electrochromic material and an inorganic electrochromic material. The organic color-changing material mainly comprises polythiophene and derivatives thereof, viologen, tetrathiafulvalene, metal phthalocyanine compounds and the like. The inorganic color-changing material is mainly researched, and tungsten oxide is preferred. Inorganic materials fall into two subclasses: an anodic coloring color-changing material and a cathodic coloring color-changing material, the anodic coloring color-changing material having rhodium trioxide (Rh2O3), cobalt dioxide (CoO2), nickel oxide (NiOx), iridium dioxide (LrO2), prussian blue, etc.; examples of the cathode coloring material include tungsten oxide (WO3), niobium oxide (Nb2O5), titanium oxide (TiO2), molybdenum oxide (MoO3), and nickel oxide (Ni2O 3). When not energized, electrochromic layer 220 may be colorless or colored. The electrochromic layer 220 may be formed by dielectric deposition, such as magnetron sputtering, vacuum evaporation, chemical liquid deposition, and anodic oxidation. The electrochromic layer 220 can cooperate with the optical coating layer, the ink layer and the carrier layer 10 to realize color change.
Among them, the electrolyte layer 230 has high ionic conductivity and electronic resistivity, and can realize rapid ion conduction between the electrochromic layer 220 and the ion storage layer 240, and simultaneously block the transmission of electrons and allow the ions to pass through for conducting the ions in the color change process. The electrolyte layer 230 has high transmittance or reflectance in a desired spectral region, and has good chemical and mechanical stability. The electrolyte layer 230 may be a solid lithium salt, LiNbO3, LiAlO2, LiTaO3, etc., and may be an all-solid polymer electrolyte, a polymer body and salt (PEO-LiCF3SO3), a polymer body and salt with an inorganic filler (PEO-LiClO4-AL2O3), a lithium-containing inorganic compound (magnetron sputtering method, argon or krypton-filled), a lithium-containing organic polymer PVB (magnetron sputtering method, argon or krypton-filled), a lithium-containing organic polymer PMMA, etc.
Among them, the ion storage layer 240 serves to balance ions, and the ion storage layer 240 can supply and store ions required for color change. Plays a role in balancing charge transport in the electrochromic structure 20, and the ion storage layer 240 has reversibility of ion insertion, better transparency, and faster reaction speed, and is a mixed conductor of electrons and ions. The ion storage layer 240 includes: a photoactive electrochromic ion storage layer 240 and a photo-inert ion storage layer 240. Wherein, the photoactive electrochromic ion storage and electrochromic layer 220 performs complementary coloring, and can be composed of, for example, NiOX, IrO2, CoO2, MnO2, FeO2, Cr2O3, RhO2, etc.; the photo-inert ion storage layer 240 remains transparent at the time of ion charge injection/extraction, such as TiO2, CeO2, SnO2, ZrO 2.
The color-changing decorative film 1 includes: a support layer 10 made of a coloured substrate; an electrochromic structure 20 formed on the carrier layer 10, the electrochromic structure 20 being sequentially stacked with: a lower electrode layer 210, an electrochromic layer 220, an electrolyte layer 230, an ion storage layer 240, and an upper electrode layer 250; the electrochromic layer 220 produces a transition between a faded state and a colored state under the influence of an applied electric field. The color-changing decorative film 1 provided by the application comprises a bearing layer 10 prepared from a colored base material, wherein the bearing layer 10 comprises a first side and a second side which are arranged in a back-to-back manner, an electrochromic structure 20 is formed on the first side and/or the second side of the bearing layer 10, and the electrochromic layer 220 generates the conversion between a fading state and a coloring state under the action of an external electric field. The electrochromic structure 20 and the colored bearing layer 10 are laminated, so that the color of the color-changing decorative film 1 is richer, and color change is realized.
In one embodiment, the color-changing decorative film 1 further includes: the surface of the texture layer 30 is provided with a convex and/or concave micro-nano structure. As shown in fig. 2a, the texture layer 30 may be disposed on the side of the carrier layer 10 away from the electrochromic structure 20, as shown in fig. 2b, and may also be disposed on the side of the electrochromic structure 20 away from the carrier layer 10. In one embodiment, as shown in fig. 2c, the color-changing decorative film 1 further includes a plurality of texture layers 30 distributed on the side of the carrier layer 10 away from the electrochromic structure 20 and on the side of the electrochromic structure 20 away from the carrier layer 10.
Specifically, the surface of the texture layer 30 is provided with micro-nano structures which are arranged in a convex and/or concave manner, the types of the micro-nano structures include a linear cylindrical mirror, a curved cylindrical mirror, a micro lens, a small short line, a CD pattern, a fresnel lens, a wire drawing pattern, and the like, and the micro-nano structures can be one or a combination of various types. The multiple micro-nano structures can be continuously designed without intervals, and can have intervals which are regular or irregular. The cross section of the micro-nano structure can be triangular, semicircular, trapezoidal, rectangular, polygonal, special-shaped and the like. The micro-nano structure has the functions of refraction, reflection and the like on light rays, so that the optical layer can show optical effects such as brightening, light shadow, bright lines and the like, and has a very good decorative effect. The texture layer 30 may be made of a thermosetting adhesive or a photo-curing adhesive, such as UV adhesive, and the texture layer 30 may also be a colored thermosetting adhesive or a photo-curing adhesive.
In one embodiment, as shown in fig. 2a, the surface of the texture layer 30 may be provided with an optical coating 40. The optical coating 40 may be disposed on a side of the textured layer 30 away from the electrochromic structure 20. The texture layer 30 cooperates with the electrochromic layer 20, the optical coating layer 40 and the ink layer 50 to realize color change.
In one embodiment, as shown in fig. 2a, the bottom layer of the color-changing decorative film 1 further includes an ink layer 50, and the ink layer 50 is provided with a priming ink. The ink layer 50 is disposed on the bottom layer of the color-changing decorative film 1, the ink applied can be black or colored, and the ink layer 50 can also realize color change together with the electrochromic layer 20, the optical coating layer 40, and the texture layer 30.
In one embodiment, as shown in fig. 3a, the electrochromic structures 20 include at least two, and the electrochromic structures 20a and 20b are distributed on different sides of the carrier layer 10.
Specifically, the color-changing decorative film 1 in this embodiment sequentially includes a first electrochromic structure 20a, a carrier layer 10, and a second electrochromic structure 20b, and an external electric field may be applied to the first electrochromic structure 20a and the second electrochromic structure 20b, and the voltage magnitude and direction of the two external electric fields may be different, for example, the first electrochromic structure 20a is in a fading state, the second electrochromic structure 20b is in a coloring state, and the first electrochromic structure 20a, the carrier layer 10, and the second electrochromic structure 20b are mutually overlapped, so that the color change of the color-changing decorative film 1 is richer.
In one embodiment, as shown in fig. 3b, the color-changing decoration film 1 includes at least two electrochromic structures 20a and 20b, and the at least two electrochromic structures 20a and 20b are stacked on each other, and the lower electrode layer of one electrochromic structure 20a is shared with the upper electrode layer of the other electrochromic structure 20b in the two adjacent stacked electrochromic structures.
Specifically, the color-changing decorative film 1 in the present embodiment includes at least two laminated electrochromic structures 20a and 20b, and a lower electrode layer of one electrochromic structure 20a of the two adjacent laminated electrochromic structures is shared with an upper electrode layer of the other electrochromic structure 20 b. An external electric field can be applied to the at least two laminated electrochromic structures 20a and 20b, the voltage magnitude and the direction of the applied electric field can be different, the at least two electrochromic structures 2020a and 20b can be in different colors, the color change of the color-changing decoration film 1 is enriched, and meanwhile, the two adjacent electrochromic structures 20a and 20b share one electrode layer, so that the thickness of the color-changing decoration film 1 can be reduced, and the aesthetic feeling is enhanced.
The present application provides a method for forming a color-changing decorative film, as shown in fig. 4, the method for forming a color-changing decorative film comprising: step 402 and step 404. Step 402, providing a colored substrate, and preparing a bearing layer by using the colored substrate, wherein the bearing layer comprises a first side and a second side which are arranged oppositely; step 404, forming an electrochromic structure on the first side and/or the second side, wherein the electrochromic structure is sequentially laminated with a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer and an upper electrode layer; the electrochromic layer is switched between a faded state and a colored state under the action of an applied electric field.
The color-changing decorative film in the present application includes: a support layer prepared from a colored substrate; electrochromic structure, form on the bearer layer, electrochromic structure has in proper order range upon range of: a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer, and an upper electrode layer. The color-changing decorative film comprises a bearing layer prepared from a colored base material, wherein an electrochromic structure is formed on the first side and/or the second side of the bearing layer, and the electrochromic layer generates the conversion between a fading state and a coloring state under the action of an external electric field. The electrochromic structure and the colored bearing layer are laminated, so that the color of the color-changing decorative film is richer, and color change is realized. If electrochromic structures are formed on the first side and the second side of the bearing layer, the color-changing decorative film can sequentially comprise a first electrochromic structure, the bearing layer and a second electrochromic structure, an external electric field can be additionally arranged on the first electrochromic structure and the second electrochromic structure, the voltage magnitude and the direction of the external electric field on the two electrochromic structures can be different, for example, the first electrochromic structure is in a fading state, the second electrochromic structure is in a coloring state, and the first electrochromic structure, the bearing layer and the second electrochromic structure are mutually overlapped to enable the color of the color-changing decorative film to be more colorful.
In one embodiment, the method for forming a color-changing decorative film further includes: and forming a texture layer on one side of the bearing layer far away from the electrochromic structure and/or one side of the electrochromic structure far away from the bearing layer, wherein the surface of the texture layer is provided with a convex and/or concave micro-nano structure.
Specifically, the texture layer may be disposed on a side of the carrier layer away from the electrochromic structure; the electrochromic structure can also be arranged on one side of the electrochromic structure far away from the bearing layer; the color-changing decorative film also comprises a plurality of texture layers, and the texture layers are distributed on one side of the bearing layer far away from the electrochromic structure and one side of the electrochromic structure far away from the bearing layer. The surface of the texture layer is provided with a micro-nano structure which is arranged in a convex and/or concave manner, the type of the micro-nano structure comprises a linear cylindrical mirror, a curved cylindrical mirror, a micro lens, a small short line, a CD line, a Fresnel lens or a wire drawing line and the like, and the micro-nano structure can be one or a combination of various types. The multiple micro-nano structures can be continuously designed without intervals, and can have intervals which are regular or irregular. The cross section of the micro-nano structure can be triangular, semicircular, trapezoidal, rectangular, polygonal, special-shaped and the like. The texture layer may be made of a thermosetting adhesive or a photo-curing adhesive, such as a UV adhesive, or a colored thermosetting adhesive or a photo-curing adhesive. The micro-nano structure has the functions of refraction, reflection and the like on light rays, so that the optical layer can show optical effects such as brightening, light shadow, bright lines and the like, and has a very good decorative effect. In one embodiment, the method further comprises the step of forming an optical coating on the side, away from the electrochromic structure, of the texture layer, and the texture layer is matched with the electrochromic layer, the optical coating and the ink layer to jointly realize color change.
In one embodiment, forming an electrochromic structure on the first side and/or the second side comprises: forming at least two stacked electrochromic structures on the first side and/or the second side; the lower electrode layer of one electrochromic structure is shared with the upper electrode layer of the other electrochromic structure in the two adjacent electrochromic structures.
Specifically, the color-changing decorative film comprises at least two laminated electrochromic structures, and the lower electrode layer of one electrochromic structure in the two adjacent laminated electrochromic structures is shared with the upper electrode layer of the other electrochromic structure. An external electric field can be applied to the at least two laminated electrochromic structures, the voltage magnitude and the direction of the applied electric field can be different, the at least two electrochromic structures can be in different colors, and the color change of the color-changing decorative film is enriched. Meanwhile, two adjacent electrochromic structures share one electrode layer, so that the thickness of the color-changing decorative film can be reduced, and the aesthetic feeling of the color-changing decorative film is enhanced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. It should be noted that "in one embodiment," "for example," "as another example," and the like, are intended to illustrate the application and are not intended to limit the application.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A color-changing decorative film, comprising:
a support layer prepared from a colored substrate;
an electrochromic structure formed on the carrier layer, the electrochromic structure having stacked in sequence: a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer, and an upper electrode layer; the electrochromic layer generates the conversion between a faded state and a colored state under the action of an external electric field.
2. The color-changing decorative film according to claim 1, further comprising: the surface of the texture layer is provided with a convex and/or concave micro-nano structure, the texture layer is arranged on one side, away from the electrochromic structure, of the bearing layer, and/or the texture layer is arranged on one side, away from the bearing layer, of the electrochromic structure.
3. The color-changing decorative film according to claim 2, further comprising: and the optical coating is arranged on one side of the texture layer, which is far away from the electrochromic structure.
4. The color-changing decorative film according to claim 1, wherein the electrochromic structures comprise at least two, and two of the electrochromic structures are distributed on different sides of the carrier layer.
5. The color-changing decorative film according to claim 1, wherein the electrochromic structures comprise at least two, and at least two of the electrochromic structures are stacked on each other, and a lower electrode layer of one of the two electrochromic structures stacked adjacent to each other is shared with an upper electrode layer of the other electrochromic structure.
6. The color-changing decorative film according to claim 1, wherein the upper electrode layer and the lower electrode layer are made of a transparent conductive material.
7. The color-changing decorative film according to claim 1, wherein the bottom layer of the color-changing decorative film further comprises an ink layer, and a primer ink is disposed on the ink layer.
8. A method for forming a color-changing decorative film, comprising:
providing a colored substrate, and preparing a bearing layer by using the colored substrate, wherein the bearing layer comprises a first side and a second side which are arranged oppositely;
forming an electrochromic structure on the first side and/or the second side, wherein the electrochromic structure is sequentially laminated with a lower electrode layer, an electrochromic layer, an electrolyte layer, an ion storage layer and an upper electrode layer; the electrochromic layer is used for generating conversion between a fading state and a coloring state under the action of an external electric field.
9. The method of claim 8, further comprising:
and forming a texture layer on one side of the bearing layer far away from the electrochromic structure and/or one side of the electrochromic structure far away from the bearing layer, wherein the surface of the texture layer is provided with a convex and/or concave micro-nano structure.
10. The method of claim 8, wherein forming an electrochromic structure on the first side and/or the second side comprises:
forming at least two of the electrochromic structures stacked on the first side and/or the second side; the lower electrode layer of one electrochromic structure is shared with the upper electrode layer of the other electrochromic structure in two adjacent electrochromic structures.
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Application publication date: 20200428 |