CN113467148A - Electrochromic film, preparation method thereof, shell assembly and electronic device - Google Patents
Electrochromic film, preparation method thereof, shell assembly and electronic device Download PDFInfo
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- CN113467148A CN113467148A CN202010249646.9A CN202010249646A CN113467148A CN 113467148 A CN113467148 A CN 113467148A CN 202010249646 A CN202010249646 A CN 202010249646A CN 113467148 A CN113467148 A CN 113467148A
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Images
Classifications
-
- 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
-
- 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
- G02F1/1533—Constructional details structural features not otherwise provided for
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The application provides an electrochromic membrane, including first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer the electrochromic layer with the transparent conducting layer of second stacks gradually the setting, colour texture layer sets up first transparent conducting layer is kept away from the surface on electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface on electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer. Through setting up the colour texture layer for the outward appearance effect of electrochromic membrane is diversified, promotes outward appearance expressive force. The application also provides a preparation method of the electrochromic film, and a shell assembly and an electronic device comprising the electrochromic film.
Description
Technical Field
The application belongs to the technical field of electronic products, and particularly relates to an electrochromic film, a preparation method of the electrochromic film, a shell assembly and electronic equipment.
Background
Electrochromism is a process of self color change of an electrochromic material caused by an electrochemical process under the action of an external power supply. The film layer using the electrochromic material is widely applied to various industries, but the existing electrochromic film has a single visual effect, needs to further improve the visual effect, and enriches the appearance expressive force.
Disclosure of Invention
In view of this, the present application provides an electrochromic film, a housing assembly, and an electronic device, which have diversified appearance effects and better and rich visual effects.
In a first aspect, the application provides an electrochromic film, including first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer the electrochromic layer with the transparent conducting layer of second stacks gradually the setting, colour texture layer sets up first transparent conducting layer is kept away from the surface on electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface on electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer.
In a second aspect, the present application provides a method of preparing an electrochromic film, comprising:
sequentially forming an electrochromic layer and a second transparent conducting layer on the first transparent conducting layer;
the first transparent conducting layer is kept away from the surface of the electrochromic layer, and/or the second transparent conducting layer is kept away from the surface molding color texture layer of the electrochromic layer, the color texture layer comprises at least one layer of a color layer and a texture layer, and the electrochromic film is obtained.
The third aspect, the application provides a casing subassembly, be in including casing and setting casing surface's electrochromic membrane, electrochromic membrane includes first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer electrochromic layer with the setting is stacked gradually to the transparent conducting layer of second, colour texture layer sets up first transparent conducting layer is kept away from the surface of electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface of electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer.
In a fourth aspect, the present application provides an electronic device, including the display screen, and set up the apron and the casing subassembly of the relative both sides of display screen, casing subassembly includes the casing and sets up casing surface's electrochromic membrane, electrochromic membrane includes first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer the electrochromic layer with the transparent conducting layer of second stacks gradually the setting, colour texture layer sets up first transparent conducting layer is kept away from the surface of electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface of electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer.
The application provides an electrochromic film and a preparation method of the electrochromic film, and the electrochromic film has diversified appearance effects and improved appearance expressive force by arranging a color texture layer; the preparation process of the electrochromic film is simple, industrial production is easy to realize, the shell assembly with the electrochromic film and the electronic equipment have better and richer visual effects, and user experience is improved.
Drawings
In order to more clearly explain the technical solution in the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be described below.
Fig. 1 is a schematic structural diagram of an electrochromic film according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of an electrochromic film according to another embodiment of the present disclosure.
Fig. 3 is a schematic structural diagram of an electrochromic film according to another embodiment of the present disclosure.
Fig. 4 is a schematic structural diagram of an electrochromic film according to another embodiment of the present disclosure.
Fig. 5 is a schematic structural diagram of an electrochromic film according to another embodiment of the present disclosure.
Fig. 6 is a schematic structural diagram of an electrochromic film according to another embodiment of the present disclosure.
Fig. 7 is a schematic flow chart of a method for manufacturing an electrochromic film according to an embodiment of the present disclosure.
Fig. 8 is a schematic structural diagram of a housing assembly according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of a housing assembly according to another embodiment of the present application.
Fig. 10 is a schematic structural diagram of a housing assembly according to another embodiment of the present application.
Fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Description of the drawings:
the display panel comprises a first transparent conducting layer-10, a first substrate-11, a first conducting layer-12, an electrochromic layer-20, an electrochromic material layer-21, an electrolyte layer-22, an ion storage layer-23, a second transparent conducting layer-30, a second substrate-31, a second conducting layer-32, a color texture layer-40, a color layer-41, a texture layer-42, frame sealing glue-50, a blocking layer-60, a connecting layer-70, an electrochromic film-100, a shell-101, a shell assembly-200, a display screen-300 and a cover plate-400.
Detailed Description
The following is a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications are also considered as the protection scope of the present application.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The application provides an electrochromic membrane, including first transparent conducting layer, electrochromic layer, second transparent conducting layer and colour texture layer, wherein, first transparent conducting layer, electrochromic layer and the setting of stacking gradually of second transparent conducting layer, colour texture layer sets up the surface of keeping away from electrochromic layer at first transparent conducting layer, and/or colour texture layer sets up the surface of keeping away from electrochromic layer at second transparent conducting layer, and colour texture layer includes at least one deck in colour layer and the texture layer. Referring to fig. 1, a schematic structural diagram of an electrochromic film 100 according to an embodiment of the present disclosure includes a first transparent conductive layer 10, an electrochromic layer 20, a second transparent conductive layer 30, and a color texture layer 40, where the first transparent conductive layer 10, the electrochromic layer 20, and the second transparent conductive layer 30 are sequentially stacked, and the color texture layer 40 is disposed on a surface of the second transparent conductive layer 30 away from the electrochromic layer 20. In another embodiment, the color texture layer 40 is disposed on a surface of the first transparent conductive layer 10 away from the electrochromic layer 20. Referring to fig. 2, a schematic structural diagram of an electrochromic film 100 according to another embodiment of the present disclosure is substantially the same as that of fig. 1, except that a color texture layer 40 is disposed on a surface of the first transparent conductive layer 10 away from the electrochromic layer 20, and a second transparent conductive layer 30 is disposed away from a surface of the electrochromic layer 20. It will be appreciated that the electrochromic layer 20 may undergo a stable, reversible color change under the action of an applied electric field, exhibiting a reversible change in color and transparency in appearance. In the related art, the appearance of the electrochromic film 100 is changed only by the transition of the color of the electrochromic layer 20 between the colored state and the transparent state, and the visual effect is single. In this application, add colour texture layer 40 in electrochromic membrane 100, through the stack of colour, texture, at electrochromic layer 20 in the in-process that changes, electrochromic membrane 100 produces different visual effects, improves user experience, has practical application's value more.
In the present application, the color texture layer 40 includes at least one of a color layer 41 and a texture layer 42, and the color texture layer 40 serves as a modification layer, so that the appearance effect of the electrochromic film 100 is better and more abundant. The texturing layer 42 has a refraction effect and a texture effect such that the electrochromic film 100 exhibits a luminous effect while giving the electrochromic film 100 a visual effect of a textured pattern. In one embodiment, the textured layer 42 may be presented by, but is not limited to, transfer or embossing. In one embodiment, the coating is performed by coating with UV glueThe pattern layer 42 is formed by post-press curing, wherein the UV glue can be but is not limited to a high scratch resistant UV transfer glue, a high hardness UV transfer glue, a high elasticity UV transfer glue, and the like. Optionally, the curing comprises curing in an LED or mercury lamp, wherein the LED curing energy is 600mJ/cm2-2000mJ/cm2Curing energy of mercury lamp is 500mJ/cm2-1500mJ/cm2. In one embodiment, the textured layer 42 is a gradient textured layer 42, such as a gradient dot layer; texture layer 42 may also be a graded layer of other textures, and the texture of texture layer 42 may be set as desired. In another embodiment, the texture of texture layer 42 is a nano-scale fantasy-colored fine texture, enhancing the visual effect. The color layer 41 imparts a color effect to the electrochromic film 100, which is superimposed with the colored or transparent state of the electrochromic layer 20, making the electrochromic film 100 more colorful. In one embodiment, the color layer 41 may be formed by, but not limited to, plating, screen printing, spraying color ink. The color layer 41 may be any one of red, orange, yellow, green, cyan, blue, and purple, or a mixture of multiple colors, the color of the color layer 41 may be pure color or gradient color, and the material of the color layer 41 may further include pearl powder, noctilucent powder, etc., so that the electrochromic film 100 has various color effects and improves the viewing quality. In one embodiment, the color texturing layer 40 has a thickness of 100nm to 1000nm, giving the electrochromic film 100 a more rich visual effect.
In one embodiment, the color texture layer 40 may be a color layer 41, and in this case, the color texture layer 40 may have one or more stacked color layers 41. Under the action of an external electric field, the electrochromic film 100 generates stable and reversible color change, and when the electrochromic layer 20 is in a colored state, the appearance color of the electrochromic film 100 is the superposition of the colors of the electrochromic layer 20 and the color layer 41; when the electrochromic layer 20 is in a transparent state, the appearance color of the electrochromic film 100 is the color of the color layer 41, so that the visual effect of the transparent appearance when only the electrochromic layer 20 exists is improved, and the electrochromic film 100 realizes richer visual change under the action of an external electric field; meanwhile, when the electrochromic film 100 is applied to an electronic device, a certain shielding effect can still be generated inside the electronic device when the electrochromic layer 20 is in a transparent state. In one embodiment, color layer 41 may be a gradient color layer such that electrochromic film 100 exhibits a gradient color appearance effect.
In another embodiment, the color texture layer 40 may be a texture layer 42, in which case the color texture layer 40 may have one or more layered texture layers 42. Under the action of an external electric field, the electrochromic film 100 undergoes stable and reversible color change, and meanwhile, the texture layer 42 enables the electrochromic film 100 to exhibit texture effects, such as but not limited to, line, pattern and the like, and simultaneously, the optical color changes at different angles to exhibit textures with different textures.
In yet another embodiment, referring to fig. 1, the color texture layer 40 includes at least one color layer 41 and at least one texture layer 42 disposed in a stacked manner. Under the action of an external electric field, the electrochromic film 100 generates stable and reversible color change, and is superposed with the color of the color layer 41 to endow the electrochromic film 100 with appearance color; meanwhile, the texture layer 42 enables the electrochromic film 100 to exhibit a texture effect, thereby improving an appearance visual effect. Further, when color texture layer 40 includes color layer 41 and texture layer 42, texture layer 42 is disposed between color layer 41 and electrochromic layer 20. At this time, the texture layer 42 is superimposed on the color layer 41, so that the appearance effect of the texture layer 42 is more clearly shown, and different light color changes are provided at different angles, so that textures with different textures are shown, and the appearance expressive force is improved.
In the present application, the orthographic projection of the color texture layer 40 on the electrochromic layer 20 partially or completely covers the electrochromic layer 20. In one embodiment, the orthographic projection of the color texture layer 40 on the electrochromic layer 20 completely covers the electrochromic layer 20, giving the electrochromic film 100 a uniform appearance effect. In another embodiment, the orthographic projection of the color texture layer 40 on the electrochromic layer 20 partially covers the electrochromic layer 20, so that the appearance of the electrochromic film 100 has a first area and a second area with different visual effects, wherein the first area presents the overlapping appearance effect of the color texture layer 40 and the electrochromic film 100, and the second area presents the appearance effect of the electrochromic film 100, so that the visual effect is more abundant.
The color of the electrochromic layer 20 between the first transparent conductive layer 10 and the second transparent conductive layer 30 is changed between a colored state and a transparent state by an applied electric field. In one embodiment, when the color texture layer 40 includes the color layer 41, the color difference Δ E between the color of the electrochromic layer 20 in the colored state and the color layer 41 is greater than 4. It is understood that the Lab color model is a device-independent color model, and is also a color model based on physiological characteristics. The Lab color model consists of L, a and b, L representing the luminance of the pixel, a representing the range from green to red and b representing the range from blue to yellow. The difference (color difference) between the two colors is represented by Δ E, for example, the value of L of the first color is L1, the value of a is a1, the value of b is b1, the value of L of the second color is L2, the value of a is a2, the value of b is b2, the difference Δ L ═ L1-L2 |, the difference Δ a ═ a1-a2 |, the difference Δ b ═ b1-b2 |, and the difference Δ E between the two colors is ═ Δ L ═ a1-a2 | (Δ L Δ E ═ b1-b2 |)2+Δa2+Δb2)1/2. When the difference in Lab values, i.e., Δ E, is greater than 4, then two colors can be clearly distinguished. In the application, the color difference Δ E between the color of the electrochromic layer 20 in the colored state and the color of the color layer 41 is set to be greater than 4, so that the two colors have a significant difference in appearance color, and then the two colors are superimposed to form a color which is obviously different from the color of the electrochromic layer 20 in the colored state. Further, when the orthographic projection part of the color texture layer 40 on the electrochromic layer 20 covers the electrochromic layer 20, the appearance of the electrochromic film 100 presents a first area and a second area with different visual effects, wherein the first area presents the overlapping appearance effect of the color texture layer 40 and the electrochromic film 100, the second area presents the appearance effect of the electrochromic film 100, and the difference of the appearance color effects of the first area and the second area is better and more obvious, so that the visual effect is enriched.
In the present application, the optical transmittance of the electrochromic layer 20 in the transparent state and the colored state is further changed by selecting the material and the thickness of the electrochromic layer 20. The thickness of the electrochromic layer 20 may be selected as desired, and may be, for example, but not limited to, 10 μm to 100 μm. Optionally, the electrochromic layer 20 has an optical transmittance of less than 30% in the colored state and greater than 80% in the transparent state. In the present application, the optical transmittance is a transmittance in a wavelength band of 420nm to 680 nm. In one embodiment, the voltage driving the electrochromic layer 20 to switch between the colored state and the transparent state is 0.5V to 1.5V. Alternatively, the time required for the electrochromic layer 20 to switch between the colored state and the transparent state is 0.9s to 1.2 s.
Referring to fig. 3, a schematic structural diagram of an electrochromic film 100 according to another embodiment of the present disclosure is shown, in which an electrochromic layer 20 includes an electrochromic material layer 21, an electrolyte layer 22, and an ion storage layer 23, which are sequentially stacked. Optionally, the material of the electrochromic material layer 21 includes at least one of an inorganic electrochromic material and an organic electrochromic material. In one embodiment, the inorganic electrochromic material comprises at least one of an oxide, sulfide, chloride, hydroxide of a transition element, an oxide, sulfide, chloride, hydroxide of a halogen, oxygen, nitrogen, alkaline earth. Wherein the transition element comprises scandium subgroup, titanium subgroup, chromium subgroup, manganese subgroup, iron group, copper subgroup, zinc subgroup or platinum group. Specifically, the inorganic electrochromic material may be, but is not limited to, ferrous chloride, ferric chloride, titanium trichloride, titanium tetrachloride, bismuth chloride, or copper chloride. In an embodiment, the organic electrochromic material comprises at least one of an organic small molecule electrochromic material and a conductive polymer electrochromic. Specifically, the organic electrochromic material may include, but is not limited to, at least one of methylene blue, viologen compounds, sodium diphenylamine sulfonate, polyaniline, anthraquinone, polyacetylene, polyaniline, polypyrrole, polythiophene, polyfuran, polyphenylene sulfide, and polyphenylacetylene. In a specific embodiment, the electrochromic material comprises polyaniline and viologen, and the concentration ratio of the polyaniline to the viologen is 1.5: 1, the concentration of the electrochromic material is 0.25 mol/L.
In the present application, the ion storage layer 23 undergoes a corresponding redox reaction, thereby functioning to balance charges. In one embodiment, the ion storage layer 23 may be formed by spin coating, flow coating, roll coating, blade coating, dip coating, spray coating, or screen printing. The electrolyte layer 22 may be a gel state electrolyte layer, a liquid state electrolyte layer, or a solid state electrolyte layer; optionally, electrolyte layer 22 is a flexible solid electrolyte layer. Compared with the liquid electrolyte layer, the gel electrolyte layer and the solid electrolyte layer have the advantages of high stability, long service life and the like, and do not generate the bad phenomena of bubbling or electrolyte leakage and the like, so that the service life of the electrochromic film 100 can be prolonged. In one embodiment, the electrolyte layer 22 has a relatively thick thickness, and can separate the electrochromic material layer 21 and the ion storage layer 23, so that the transferred positive and negative ions do not quickly converge, and can separate electrons of the first transparent conductive layer 10 and the second transparent conductive layer 30, thereby ensuring the color change stability of the electrochromic layer 20. In one embodiment, the thickness of the electrolyte layer 22 is 50 μm to 300 μm, which can prevent the problem of breakdown caused by too thin electrolyte layer 22 and the problem of longer electrochromic time caused by too thick electrolyte layer 22, thereby further improving the stability of the electrochromic layer 20.
Continuing to refer to fig. 3, the first transparent conductive layer 10 includes a first substrate 11 and a first conductive layer 12, the first conductive layer 12 is disposed between the first substrate 11 and the electrochromic layer 20; the second transparent conductive layer 30 includes a second substrate 31 and a second conductive layer 32, and the second conductive layer 32 is disposed between the second substrate 31 and the electrochromic layer 20. In this application, the first substrate 11 and the second substrate 31 are transparent substrates. Optionally, the materials of the first substrate 11 and the second substrate 31 are respectively selected from glass or flexible materials. Further, the flexible material includes at least one of polyethylene terephthalate, polyimide, polycarbonate, cyclic olefin copolymer, and cellulose triacetate. The flexible first substrate 11 and the flexible second substrate 31 have good mechanical properties, light transmittance and flexibility, and the bending resistance of the electrochromic film 100 is improved. The thicknesses of the first substrate 11 and the second substrate 31 may be, but not limited to, 50 μm to 100 μm, the thicknesses of the first substrate 11 and the second substrate 31 may be the same or different, and the thicknesses of the first substrate 11 and the second substrate 31 are within the above range, so that good mechanical properties, light transmittance and bending properties can be ensured, the electrochromic film 100 is not too thick, and the trend of light and thin development is met. In one embodiment, the first conductive layer 12 and the second conductive layer 32 are made of at least one material selected from the group consisting of indium tin oxide, indium zinc oxide, fluorine-doped tin oxide, and aluminum-doped zinc oxide. The material of the first conductive layer 12 and the material of the second conductive layer 32 may be the same or different, and those skilled in the art can select them as needed. The first conductive layer 12 and the second conductive layer 32 formed by the above materials have good conductivity, so that the electrode sheet resistance is small, the color change uniformity is good, and the color change effect is better due to good light transmittance. In an embodiment, the first conductive layer 12 and the second conductive layer 32 may be formed by deposition, coating, and the like, such as vacuum evaporation, sputtering, spin coating, and the like, respectively, and the process is mature and convenient to operate. In one embodiment, the thickness of the first conductive layer 12 and the second conductive layer 32 is 80nm to 250nm, and the first conductive layer 12 and the second conductive layer 32 with the thickness have better use performance. In the present application, when the color texture layer 40 includes the texture layer 42, which is disposed between the first substrate 11 and the first conductive layer 12, and/or between the second substrate 31 and the second conductive layer 32, the texture of the texture layer 42 may cause the conductive layer to be formed without being continuously distributed, so that the electric field distribution is not uniform, and the color change performance is affected. Therefore, the color texture layer 40 is disposed on the surface of the first transparent conductive layer 10 away from the electrochromic layer 20, and/or the color texture layer 40 is disposed on the surface of the second transparent conductive layer 30 away from the electrochromic layer 20, which is more beneficial to the stable color change of the electrochromic film 100.
Referring to fig. 1, in an embodiment, the electrochromic film 100 further includes a frame sealing adhesive 50, and the frame sealing adhesive 50 is disposed between the first transparent conductive layer 10 and the second transparent conductive layer 30 and encloses the electrochromic layer 20. It can be understood that the sealant 50 has an insulating property, and can protect the electrochromic layer 20, so that the electrochromic layer 20 is more stable.
Referring to fig. 4, a schematic structural diagram of an electrochromic film 100 according to another embodiment of the present disclosure is substantially the same as that of fig. 3, except that the electrochromic film 100 further includes a barrier layer 60, and the barrier layer 60 is disposed between the first substrate 11 and the first conductive layer 12. Referring to fig. 5, a schematic structural diagram of an electrochromic film 100 according to another embodiment of the present disclosure is substantially the same as that of fig. 4, except that a barrier layer 60 is disposed between the second substrate 31 and the second conductive layer 32. Referring to fig. 6, a schematic structural diagram of an electrochromic film 100 according to another embodiment of the present disclosure is substantially the same as that of fig. 4, except that a barrier layer 60 is disposed between the first substrate 11 and the first conductive layer 12, and between the second substrate 31 and the second conductive layer 32. In the present application, if the barrier layer 60 is disposed between the first transparent conductive layer 10 and the color texture layer 40, and/or between the second transparent conductive layer 30 and the color texture layer 40, the bonding force of the color texture layer 40 may be affected, and meanwhile, the preparation process of the color texture layer 40 may affect the blocking effect of the barrier layer 60, so as to reduce the blocking rate; meanwhile, the barrier layer 60 is disposed between the first transparent conductive layer 10 and the electrochromic layer 20, and/or between the second transparent conductive layer 30 and the electrochromic layer 20, so that the electrochromic layer 20 cannot conduct electricity and cannot perform color transition. Therefore, the barrier layer 60 is disposed between the substrate and the conductive layer, which not only serves as a barrier function, but also does not damage the bonding force between the layers and the effect of the barrier layer 60, thereby providing a good protection effect for the electrochromic film 100.
In one embodiment of the present disclosure, the material of the barrier layer 60 includes at least one of an inorganic compound and an organic compound. Optionally, the material of the barrier layer 60 includes at least one of silicon dioxide, silicon nitride, silicon oxynitride, aluminum oxide, polypyrrole, polythiophene, polyaniline, and siloxane polymer. In one embodiment, the barrier layer 60 is made by flash evaporation, atomic layer deposition, or the like, to be 100nm to 1000nm, 200nm to 1000nm, or 300nm to 8000 nm. In one embodiment, the barrier layer 60 has a moisture vapor transmission rate of less than 10-2g/m2The barrier layer 60 has a compact structure per day (20 ℃/100% RH), has an excellent water and oxygen barrier effect, and improves the environmental stability of the electrochromic film 100.
This application is through setting up colour texture layer 40 for electrochromic membrane 100's outward appearance effect is diversified, promotes outward appearance expressive force, has more practical application and worth.
The application also provides a preparation method of the electrochromic film, and the preparation method is used for preparing the electrochromic film 100 provided by any one of the embodiments. Referring to fig. 7, a schematic flow chart of a method for manufacturing an electrochromic film 100 according to an embodiment of the present application is shown, including the following steps:
operation 110: and sequentially forming an electrochromic layer and a second transparent conducting layer on the first transparent conducting layer.
In operation 110, the first transparent conductive layer 10 may be manufactured by forming a first conductive layer 12 on a first substrate 11 through coating, deposition, or the like. Optionally, the electrochromic layer 20 includes an electrochromic material layer 21, an electrolyte layer 22, and an ion storage layer 23. In one embodiment, the electrochromic layer 20 may be prepared by spin coating, curtain coating, roll coating, blade coating, dip coating, spray coating, or screen printing the first transparent conductive layer 10 to form the ion storage layer 23, coating the ion storage layer 23 to form the electrolyte layer 22, coating the electrolyte layer 22 with an electrochromic material, and vacuum drying to form the electrochromic material layer 21. Alternatively, the second transparent conductive layer 30 may be formed by coating, depositing, etc. the second conductive layer 32 on the second substrate 31. Further, a second transparent conductive layer 30 is disposed on a surface of the electrochromic layer 20 away from the first transparent conductive layer 10. In another embodiment, a frame sealing adhesive 50 is further included, and the frame sealing adhesive 50 is disposed between the first transparent conductive layer 10 and the second transparent conductive layer 30, and encloses the electrochromic layer 20. The sealant 50 has an insulating property, and can protect the electrochromic layer 20, so that the electrochromic layer 20 is more stable. In yet another embodiment, a barrier layer 60 is formed between the first substrate 11 and the first conductive layer 12, and/or between the second substrate 31 and the second conductive layer 32 by at least one of flash evaporation and atomic layer deposition, so as to isolate water and oxygen, protect the electrochromic layer 20, and improve the stability of the electrochromic film 100.
Operation 120: and forming a color texture layer on the surface of the first transparent conducting layer far away from the electrochromic layer and/or the surface of the second transparent conducting layer far away from the electrochromic layer, wherein the color texture layer comprises at least one of a color layer and a texture layer, so as to obtain the electrochromic film.
In operation 120, the color layer 41 may be formed by, but not limited to, plating, screen printing, spraying color ink. In one embodiment, the textured layer 42 may be presented by, but is not limited to, transfer or embossing. In one embodiment, the texture layer 42 is formed by coating a UV glue, and curing after imprinting, wherein the UV glue may be, but not limited to, a high scratch resistant UV transfer glue, a high hardness UV transfer glue, a high elasticity UV transfer glue, and the like. Optionally, the curing comprises curing in an LED or mercury lamp, wherein the LED curing energy is 600mJ/cm2-2000mJ/cm2Curing energy of mercury lamp is 500mJ/cm2-1500mJ/cm2。
The present application further provides a housing assembly 200, please refer to fig. 8, the housing assembly 200 includes a housing 101 and an electrochromic film 100 disposed on a surface of the housing 101, wherein the electrochromic film 100 includes the electrochromic film in any of the embodiments described above. The electrochromic film 100 has rich appearance effects such as color and texture, and improves the visual effect of the housing assembly 200.
It is understood that the housing 101 has an inner surface and an outer surface which are oppositely arranged, and in the embodiment of the present application, the electrochromic film 100 may be arranged on the inner surface of the housing 101, on the outer surface of the housing 101, or on both the inner surface and the outer surface of the housing 101. Further, since the electrochromic film 100 needs to control the change of color by an electric field, disposing the electrochromic film 100 on the inner surface of the housing 101 is more practical and can more stably perform color transition. In an embodiment, referring to fig. 9, the housing assembly 200 includes a housing 101, a first transparent conductive layer 10, an electrochromic layer 20, a second transparent conductive layer 30, a texture layer 42 and a color layer 41, which are sequentially stacked, in which the texture layer 42 is disposed between the color layer 41 and the electrochromic layer 20, and the color layer 41 makes the appearance effect of the texture layer 42 more clearly appear, and has different light color changes at different angles, and presents textures with different textures, thereby improving the appearance expressive force. In another embodiment, the housing assembly 200 includes a housing 101, a color layer 41, a texture layer 42, a first transparent conductive layer 10, an electrochromic layer 20, and a second transparent conductive layer 30, which are sequentially stacked, in which the texture layer 42 is disposed between the color layer 41 and the electrochromic layer 20, and the color layer 41 makes the appearance effect of the texture layer 42 more clearly appear, and has different light color changes at different angles, so as to present textures with different textures, thereby improving the appearance expressive force. In another embodiment, referring to fig. 10, the housing assembly 200 includes a housing 101, a first transparent conductive layer 10, an electrochromic layer 20, a second conductive layer 32, a barrier layer 60, a second substrate 31, and a color texture layer 40, which are sequentially stacked, wherein the barrier layer 60 protects the electrochromic layer 20, so that the electrochromic film 100 can stably perform color transition. Further, the frame sealing glue 50 enclosing the electrochromic layer 20 is further included to further protect the electrochromic layer 20.
In an embodiment of the present application, the orthographic projection of the electrochromic film 100 on the housing 101 completely covers the housing 101, such that the overall appearance of the housing assembly 200 presents the color and texture of the electrochromic film 100. In another embodiment, the front projection of the electrochromic film 100 on the housing 101 partially covers the housing 101, so that the appearance of the housing assembly 200 partially presents the color and texture of the electrochromic film 100, and partially sets other colors and textures, thereby realizing the color-contrast effect and enriching the visual effect of the housing assembly 200.
With continued reference to fig. 9, the housing assembly 200 further includes a connecting layer 70 disposed between the housing 101 and the electrochromic film 100 to connect the housing 101 and the electrochromic film 100. In one embodiment, an optical paste (OCA) or an optical liquid paste (OCR) may be coated on the surface of the housing 101 and cured to form the connection layer 70. Specifically, before the connection layer 70 is formed by curing, the ultraviolet light curing adhesive may be pressed flatly to make the surface of the connection layer 70 flat. OCA and OCR are adhesives for cementing optical elements, generally have the characteristics of colorless transparency, light transmittance of more than 90 percent, good cementing strength, capability of being cured at room temperature or intermediate temperature, small curing shrinkage and the like. In the present application, when the electrochromic film 100 is connected to the housing 101 by using the connection layer 70, the connection layer 70 may also protect the electrochromic layer 20 in the electrochromic film 100 to some extent, isolate water and oxygen, and improve the stability of the electrochromic film 100.
In an embodiment of the present application, the housing assembly 200 further includes a primer layer disposed on a surface of the electrochromic film 100 away from the housing 101, the primer layer facilitating the connection of the adhesive and the housing assembly 200. In one embodiment, the color of the primer layer may be white, which more significantly offsets the color of the electrochromic film 100, so that the appearance of the housing 101 is clearer. In another embodiment, the outer surface of the casing 101 may be further provided with a protective layer, such as an anti-fingerprint layer, a hardened layer, etc., to protect the casing assembly 200.
The present application further provides an electronic device comprising the housing assembly 200 of any of the above embodiments. It is understood that the electronic device may be, but is not limited to, a cell phone, a tablet, a laptop, a watch, MP3, MP4, GPS navigator, digital camera, etc. The following description will be given taking a mobile phone as an example.
Referring to fig. 11, a schematic structural diagram of an electronic device according to an embodiment of the present disclosure includes a display screen 300, and a cover plate 400 and a housing assembly 200 disposed on opposite sides of the display screen 300, where the housing assembly 200 may be, but is not limited to, a rear cover, a middle frame, and the like of the electronic device. By controlling the color change of the electrochromic film 100, the interaction between the user and the electronic device is more diversified, the appearance effect of the electronic device is also changed, and the appearance expressive force is improved.
The foregoing detailed description has provided for the embodiments of the present application, and the principles and embodiments of the present application have been presented herein for purposes of illustration and description only and to facilitate understanding of the methods and their core concepts; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (15)
1. The utility model provides an electrochromic membrane, its characterized in that includes first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer the electrochromic layer with the transparent conducting layer of second stacks gradually the setting, colour texture layer sets up first transparent conducting layer is kept away from the surface on electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface on electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer.
2. The electrochromic film of claim 1 wherein an orthographic projection of said color texture layer on said electrochromic layer partially or completely covers said electrochromic layer.
3. The electrochromic film of claim 1 wherein said color texture layer comprises a color layer and a texture layer, said texture layer being disposed between said color layer and said electrochromic layer.
4. The electrochromic film of claim 1 wherein said electrochromic layer has a transparent state and a colored state, the color of said electrochromic layer in said colored state differing from the color of said color layer by a color difference Δ E greater than 4.
5. The electrochromic film of claim 1, wherein the first transparent conductive layer comprises a first substrate and a first conductive layer, the first conductive layer disposed between the first substrate and the electrochromic layer; the second transparent conductive layer includes a second substrate and a second conductive layer disposed between the second substrate and the electrochromic layer.
6. The electrochromic film of claim 5, further comprising a barrier layer disposed between the first substrate and the first conductive layer, and/or disposed between the second substrate and the second conductive layer.
7. The electrochromic film of claim 6 wherein the barrier layer comprises at least one of silicon dioxide, silicon nitride, silicon oxynitride, aluminum oxide, polypyrrole, polythiophene, polyaniline, and siloxane polymers.
8. The electrochromic film of claim 6 wherein said barrier layer has a moisture vapor transmission rate of less than 10-2g/m2The thickness of the barrier layer is 100nm-1000nm per day.
9. The electrochromic film of claim 1, further comprising a frame sealant disposed between the first transparent conductive layer and the second transparent conductive layer and surrounding the electrochromic layer.
10. The electrochromic film of claim 1, wherein the electrochromic layer comprises an electrochromic material layer, an electrolyte layer, and an ion storage layer, which are sequentially stacked.
11. A method of making an electrochromic film, comprising:
sequentially forming an electrochromic layer and a second transparent conducting layer on the first transparent conducting layer;
the first transparent conducting layer is kept away from the surface of the electrochromic layer, and/or the second transparent conducting layer is kept away from the surface molding color texture layer of the electrochromic layer, the color texture layer comprises at least one layer of a color layer and a texture layer, and the electrochromic film is obtained.
12. The production method according to claim 11, wherein when the first transparent conductive layer includes a first substrate and a first conductive layer, the first conductive layer is formed between the first substrate and the electrochromic layer; the second transparent conducting layer comprises a second substrate and a second conducting layer, and the second conducting layer is formed between the second substrate and the electrochromic layer and further comprises a blocking layer formed between the first substrate and the first conducting layer and/or between the second substrate and the second conducting layer by adopting at least one of flash evaporation and atomic layer deposition processes.
13. The utility model provides a shell assembly, its characterized in that is in including casing and setting housing surface's electrochromic membrane, electrochromic membrane includes first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer electrochromic layer with the transparent conducting layer of second stacks gradually the setting, colour texture layer sets up first transparent conducting layer is kept away from the surface of electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface of electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer.
14. The housing assembly of claim 13, further comprising a connecting layer disposed between the housing and the electrochromic film to connect the housing and the electrochromic film.
15. The utility model provides an electronic equipment, its characterized in that includes the display screen, and sets up apron and the casing subassembly of the relative both sides of display screen, casing subassembly includes the casing and sets up casing surface's electrochromic membrane, electrochromic membrane includes first transparent conducting layer, electrochromic layer, the transparent conducting layer of second and colour texture layer, wherein, first transparent conducting layer electrochromic layer with the transparent conducting layer of second stacks gradually the setting, colour texture layer sets up first transparent conducting layer is kept away from the surface of electrochromic layer, and/or colour texture layer sets up the transparent conducting layer of second is kept away from the surface of electrochromic layer, colour texture layer includes at least one deck in colour layer and the texture layer.
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| CN114442392A (en) * | 2022-02-21 | 2022-05-06 | 中国科学技术大学 | Electrolyte for electrochromic window and preparation method thereof |
| CN115320205A (en) * | 2022-08-19 | 2022-11-11 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
| WO2023284462A1 (en) * | 2021-07-12 | 2023-01-19 | Oppo广东移动通信有限公司 | Housing and electronic device thereof |
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| CN114442392A (en) * | 2022-02-21 | 2022-05-06 | 中国科学技术大学 | Electrolyte for electrochromic window and preparation method thereof |
| CN115320205A (en) * | 2022-08-19 | 2022-11-11 | Oppo广东移动通信有限公司 | Shell assembly, preparation method thereof and electronic equipment |
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Application publication date: 20211001 |