CN113891596B

CN113891596B - Decorative film, preparation method thereof, shell and electronic equipment

Info

Publication number: CN113891596B
Application number: CN202111138177.4A
Authority: CN
Inventors: 叶万俊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2023-05-26
Anticipated expiration: 2041-09-27
Also published as: CN113891596A

Abstract

The application provides a decorative film, a preparation method thereof, a shell and electronic equipment. The decorative film of the present application includes: a color shifting layer, the color shifting layer comprising: the bearing layer is provided with a first surface, and a plurality of accommodating cavities are arranged in the bearing layer; the color-changing elements are arranged in the accommodating cavities and can freely rotate in the accommodating cavities, one or more color-changing elements are arranged in each accommodating cavity, and the color-changing elements have colors and magnetism; the plurality of color shifting elements cooperate to reveal a first pattern on the first surface side of the decorative film when the decorative film is in a first magnetic field. The decorative film of the embodiment of the application can expose the colored fine patterns.

Description

Decorative film, preparation method thereof, shell and electronic equipment

Technical Field

The application relates to the field of electronics, in particular to a decorative film, a preparation method thereof, a shell and electronic equipment.

Background

Along with the development of technology and the improvement of living standard, people put forward higher requirements on the visual effect of the appearance of electronic equipment, however, the appearance expressive force of the existing electronic equipment is insufficient, the color of a shell of the electronic equipment is mostly fixed, the appearance tends to be homogeneous, and a user can easily see a fixed color for a long time to easily see aesthetic fatigue, and the user experience is seriously influenced.

Disclosure of Invention

In view of the above, embodiments of the present application provide a decorative film that can reveal colored fine patterns.

The embodiment of the application provides a decorative film, which comprises: a color shifting layer, the color shifting layer comprising:

the bearing layer is provided with a first surface, and a plurality of accommodating cavities are arranged in the bearing layer; and

the color-changing elements are arranged in the accommodating cavities and can freely rotate in the accommodating cavities, one or more color-changing elements are arranged in each accommodating cavity, and the color-changing elements have color and magnetism;

the plurality of color shifting elements cooperate to reveal a first pattern on the first surface side of the decorative film when the decorative film is in a first magnetic field.

In addition, the embodiment of the application also provides a preparation method of the decorative film, which comprises the following steps:

preparing a first sub-bearing layer, wherein the first sub-bearing layer is provided with a plurality of first grooves;

preparing a second sub-bearing layer, wherein the second sub-bearing layer is provided with a plurality of second grooves; and

arranging a plurality of color-changing elements in the plurality of first grooves of the first sub-bearing layer, arranging the second sub-bearing layer on the surface of the first sub-bearing layer with the first grooves in an inverted mode, enabling the first grooves to correspond to the second grooves one by one, and enabling each first groove and one second groove to be arranged in opposite directions to form a containing cavity in an enclosing mode so as to obtain the color-changing layer; the color-changing elements have color and magnetism, can rotate freely in the accommodating cavity, the surface, away from the second sub-bearing layer, of the first sub-bearing layer is a first surface, and when the decorative film is in a first magnetic field, the color-changing elements are matched to enable the first surface side of the decorative film to expose first patterns.

In addition, the embodiment of the application also provides a shell, which comprises:

a housing body; and

the decoration film of this application embodiment, the decoration film set up in the surface of casing body.

In addition, an embodiment of the present application provides an electronic device, including:

a display assembly for displaying;

the shell is provided with a containing space and is used for bearing the display assembly; and

the circuit board assembly is arranged in the accommodating space and is electrically connected with the display assembly and used for controlling the display assembly to display.

The decoration film of this application embodiment includes a plurality of color change elements, a plurality of color change elements can be in the accommodation intracavity free rotation, color change elements have the colour and have magnetism, when the decoration film is in first magnetic field, a plurality of color change elements cooperation is in order to make the first surface side of decoration film shows first pattern. Thus, the pattern of the decorative film surface can be changed by applying the first magnetic field to the decorative film so that the first surface side of the decorative film reveals the first pattern. In addition, through the design to the color change component colour for the different positions of first pattern appear different colours, obtain fine, colored first pattern, thereby make the decorating film changeable colour, and changeable pattern improves the user experience of decorating film, better avoid visual fatigue.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a decorative film according to an embodiment of the present application.

FIG. 2 is a schematic view of a partially cut-away structure of a decorative film according to an embodiment of the present application along the direction A-A in FIG. 1.

Fig. 3 is a schematic top view of a decorative film according to an embodiment of the present disclosure.

Fig. 4 is a schematic view of a partially cut-away structure of a decorative film according to an embodiment of the present application without patterns.

Fig. 5 is a schematic top view of a decorative film according to an embodiment of the present application showing a first pattern.

Fig. 6 is a schematic view of a partially cut-away structure of a decorative film showing a first pattern according to an embodiment of the present application.

Fig. 7 is a schematic top view of a decorative film according to an embodiment of the present disclosure showing a second pattern.

Fig. 8 is a schematic view of a partial cross-sectional structure of a decorative film according to an embodiment of the present application showing a second pattern.

FIG. 9 is a schematic view of a partial cross-sectional structure of a carrier layer along the direction A-A in FIG. 1 according to an embodiment of the present application.

Fig. 10 is a schematic structural view of a color-changing element according to an embodiment of the present application.

Fig. 11 is a schematic structural view of a color-changing element according to still another embodiment of the present application.

Fig. 12 is a schematic structural view of a color-changing element according to still another embodiment of the present application.

Fig. 13 is a schematic structural view of a color change element according to still another embodiment of the present application.

Fig. 14 is a schematic structural view of a color change element according to still another embodiment of the present application.

Fig. 15 is a schematic structural view of a color change element according to still another embodiment of the present application.

FIG. 16 is a schematic view of a partially cut-away structure of a decorative film according to yet another embodiment of the present application along the direction A-A in FIG. 1.

FIG. 17 is a schematic diagram of the structure of a first and second electromagnetic layer according to an embodiment of the present application.

FIG. 18 is a schematic structural view of a first and second electromagnetic layer according to yet another embodiment of the present application.

Fig. 19 is a schematic flow chart of a method for producing a decorative film according to an embodiment of the present application.

FIG. 20 is a schematic view of a process for disassembling each color of a decorative film according to an embodiment of the present disclosure.

Fig. 21 is a schematic flow chart of a method for producing a decorative film according to an embodiment of the present application.

Fig. 22 is a schematic flow chart of a method for manufacturing a color-changing element according to an embodiment of the present application.

Fig. 23 is a flow chart illustrating a method for manufacturing a color-changing element according to another embodiment of the present application.

Fig. 24 is a flow chart illustrating a method for manufacturing a color-changing element according to another embodiment of the present application.

Fig. 25 is a flow chart of a method for producing a decorative film according to another embodiment of the present application.

Fig. 26 is a schematic structural view of a housing according to an embodiment of the present application.

Fig. 27 is a schematic view of a partial cross-sectional structure of a housing of an embodiment of the present application along the direction B-B in fig. 26.

Fig. 28 is a schematic cross-sectional view of a housing according to yet another embodiment of the present application along the direction B-B in fig. 26.

Fig. 29 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 30 is a schematic view of a partially exploded structure of an electronic device according to an embodiment of the present application.

Fig. 31 is a circuit block diagram of an electronic device of an embodiment of the present application.

Reference numerals illustrate:

100-decorative film 116-second sub-carrier

10-color-changing layer 1161-second substrate layer

11-carrier layer 1163-second accommodating layer

111-first surface 1102-second groove

112-accommodation chamber 13-color-changing element

113-second surface 131-first color-changing element

114-first sub-carrier 133-second color shifting element

1141 first substrate layer 135 third color shifting element

1143 first receiving layer 132 body portion

1101-first recess 1321-first plane of rotation

1323-second surface of revolution 52-second magnetic element

134-magnetic layer 54-fourth wire

136-first color layer 70-masking layer

138 second color layer 400 Shell

139 adhesion layer 410 housing body

30-first electromagnetic layer 411-bottom

31-third substrate layer 413-side

33-first wire 401-accommodation space

32-first magnetic member 500-electronic device

34-third wire 510-display assembly

50-second electromagnetic layer 530-circuit board assembly

51-fourth substrate layer 531-processor

53-second conductor 533-memory

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will clearly and completely describe the technical solution in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

It should be noted that, for convenience of explanation, in the embodiments of the present application, like reference numerals denote like components, and for brevity, detailed explanation of the like components is omitted in different embodiments.

In order to improve the appearance expressive force of electronic equipment such as a mobile phone, a tablet personal computer and the like and better prevent aesthetic fatigue of users, an electrochromic layer, a thermochromic layer and the like can be arranged in a shell of the electronic equipment. The color of the electrochromic layer is changed by loading different voltage values to change the color of the housing, or the color of the thermochromic layer is changed by heating the thermochromic layer to different temperatures to change the color of the housing. However, the electrochromic layer and the thermochromic layer can only change a single color (i.e., the whole shell shows the same color change when the color changes), and it is difficult to realize a color pattern change (in other words, it is difficult to make different positions of the shell show different colors), so that the appearance expressive force is limited. In addition, the temperature of the whole plane is difficult to be controlled at the same level, and local heterochromatic phenomenon is easy to occur.

Referring to fig. 1 and 2, an embodiment of the present application provides a decorative film 100, which includes: color-changing layer 10 the color-changing layer 10 comprises a carrier layer 11 and a plurality of color-changing elements 13. The carrying layer 11 has a first surface 111, and a plurality of accommodating cavities 112 are disposed in the carrying layer 11. The color-changing elements 13 are disposed in the accommodating chambers 112 and can freely rotate in the accommodating chambers 112, each accommodating chamber 112 is provided with one or more color-changing elements 13, and the color-changing elements 13 have color and magnetism. When the decorative film 100 is in the first magnetic field, the plurality of color-changing elements 13 cooperate to expose the first pattern on the first surface 111 side of the decorative film 100.

Referring to fig. 3 and 4, when the decorative film 100 is not in the magnetic field, the states of the plurality of color-changing elements 13 are irregular, and the first surface 111 side of the decorative film 100 reveals the colors of the plurality of color-changing elements 13 arranged randomly (as shown in fig. 3). Referring to fig. 5 and fig. 6, when the decoration film 100 is in the first magnetic field, at least a portion of the plurality of color-changing elements 13 move (e.g. rotate) in the accommodating cavity 112 under the action of the first magnetic field, so as to be orderly arranged, and the first surface 111 side of the decoration film 100 reveals the first pattern (such as the loving pattern shown in fig. 5).

In some embodiments, each accommodating cavity 112 is provided with one color-changing element 13, and different color-changing elements 13 are arranged in different accommodating cavities 112, so that the movement of adjacent color-changing elements 13 can be better prevented from being blocked. In other embodiments, each of the receiving chambers 112 may be provided with a plurality of different color-changing elements 13, such that movement (e.g., rotation) of the plurality of color-changing elements 13 within the same receiving chamber 112 does not affect each other.

Alternatively, the first pattern may be a color pattern or an off-white pattern. The first pattern may include a single color or may include a plurality of colors, in other words, the first pattern may be a single color or may be a plurality of colors.

The decorative film 100 of the embodiment of the present application may be applied to a case of a portable electronic device such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, a smart band, a smart watch, an electronic reader, a game machine, and the like. The housing of the electronic device may be a 2D structure, a 2.5D structure, a 3D structure, etc.

The decoration film 100 of the embodiment of the application includes a plurality of color-changing elements 13, the plurality of color-changing elements 13 can freely rotate in the accommodating cavity 112, the color-changing elements 13 have color and have magnetism, and when the decoration film 100 is in the first magnetic field, the plurality of color-changing elements 13 cooperate to make the first surface 111 side of the decoration film 100 expose the first pattern. Thus, the pattern of the surface of the decorative film 100 may be changed by applying the first magnetic field to the decorative film 100 such that the first pattern is exposed on the first surface 111 side of the decorative film 100. In addition, through the design to the colour of the colour change element 13 for different positions of first pattern appear different colours, obtain fine, colored first pattern, thereby make decorating film 100 changeable colour, and changeable pattern improves the user experience of decorating film 100, better avoid visual fatigue.

Referring to fig. 7 and 8, in some embodiments, when the decorative film 100 is in the second magnetic field, the plurality of color-changing elements 13 cooperate to expose the second pattern (such as the prismatic pattern in fig. 7, i.e. the black ground pattern) on the first surface 111 side of the decorative film 100; wherein the first magnetic field is opposite to the second magnetic field. When the decorative layer is in the second magnetic field, at least part of the plurality of color-changing elements 13 moves, such as rotates, under the action of the second magnetic field, and are orderly arranged, so that the first surface 111 side of the decorative film 100 reveals the second pattern. This may allow the decorative film 100 to have a more varied appearance pattern and color by changing the direction of the magnetic field such that one or more of the pattern, location, color, etc. of the pattern revealed by the first surface 111 is changed.

In other embodiments, when the decorative film 100 is subjected to the second magnetic field, the first surface 111 does not exhibit a pattern, but exhibits a single color.

Alternatively, the second pattern may be a color pattern or an off-white pattern. The second pattern may include a single color or may include a plurality of colors, in other words, the second pattern may be a single color or may be a plurality of colors.

Alternatively, the first magnetic field and the second magnetic field may be external magnetic fields or magnetic fields generated in the decoration film 100, such as the first magnetic layer 30 and the second magnetic layer 50 described below.

Alternatively, the position, color, and pattern of the second pattern and the first pattern may be the same or different. For example, when the second pattern is identical to the first pattern, the color or position of the second pattern may be identical to the first pattern. For another example, the second pattern and the first pattern are different in position, color and pattern (as shown in fig. 5 and 7).

Optionally, the carrier layer 11 further has a second surface 113, and the second surface 113 is disposed opposite to the first surface 111.

Alternatively, the color-changing layer 10 is light-transmitting, and the light transmittance of the color-changing layer 10 may be 85% or more, and further, the light transmittance of the color-changing layer 10 may be 90% or more; specifically, the light transmittance of the color-changing layer 10 may be, but is not limited to, 85%, 88%, 90%, 93%, 95%, 97%, 98%, 99%, etc. The higher the transmittance of the color-changing layer 10, the better the transmittance, and the clearer the resulting pattern of the color-changing layer 10.

Alternatively, the receiving cavity 112 may be a cavity having a regular shape, for example, may be a regular shape such as a sphere, an ellipsoid, a square, or the like. In addition, the accommodating chamber 112 may be a hollow chamber having an irregular shape. Alternatively, the equivalent sphere diameter of the accommodation chamber 112 is 1.1 to 1.3 times the equivalent sphere diameter of the color change element 13. When the ratio of the equivalent sphere diameter of the accommodating cavity 112 to the equivalent sphere diameter of the color-changing element 13 is too large (more than 1.3 times), the color of the color-changing element 13 far from the other side of the first surface 111 can be observed by the first surface 111 during display, the effect of the color observation of the first surface 111 is affected, and the difficulty of pattern and color design of the first pattern and the second pattern is increased; the ratio of the equivalent sphere diameter of the accommodating cavity 112 to the equivalent sphere diameter of the color-changing element 13 is too small (less than 1.1 times), free rotation of the color-changing element 13 in the accommodating cavity 112 is hindered, the response speed of the color change of the decorative film 100 is reduced, and even the color change of the decorative film 100 is affected.

Alternatively, the equivalent sphere diameter of the receiving cavity 112 is 1.1 μm to 130 μm; specifically, it may be, but is not limited to, 1.1 μm, 5 μm, 10 μm, 30 μm, 50 μm, 80 μm, 100 μm, 130 μm, etc. The equivalent sphere diameter of the accommodating cavity 112 is too small, which increases the difficulty and cost of the manufacturing process, and the equivalent sphere diameter of the accommodating cavity 112 is too large, which reduces the fineness of the exposed patterns (such as the first pattern and the second pattern) on the surface of the decorative film 100. The term "equivalent sphere diameter" in this application refers to an irregularly shaped object that has the same volume as the diameter of a sphere.

Referring to fig. 9, alternatively, the carrier layer 11 includes a first sub-carrier layer 114 and a second sub-carrier layer 116 that are stacked, the first sub-carrier layer 114 has a first surface 111 and a plurality of first grooves 1101, the second sub-carrier layer 116 has a second surface 113 and a plurality of second grooves 1102, and the plurality of first grooves 1101 and the plurality of second grooves 1102 are disposed opposite to each other to define a plurality of accommodating cavities 112. The first sub-carrier 114 includes a first substrate layer 1141 and a first accommodating layer 1143 stacked together, the first accommodating layer 1143 has a plurality of first grooves 1101, and the plurality of first grooves 1101 are disposed on a surface of the first accommodating layer 1143 away from the first substrate layer 1141. The second sub-carrier layer 116 includes a second substrate layer 1161 and a second accommodating layer 1163 stacked together, the second accommodating layer 1163 has a plurality of second grooves 1102, and the plurality of second grooves 1102 are disposed on a surface of the second accommodating layer 1163 away from the second substrate layer 1161. In some embodiments, the first sub-carrier 114 and the second sub-carrier 116 may be fixed by glue (e.g., OCA glue, UV glue, hot melt glue, etc.).

In some embodiments, the first housing layer 1143 and the second housing layer 1163 may be photo-cured glue layers, such as ultraviolet light curing glue layers (UV glue), and may also be heat curing glue layers. Optionally, the first housing layer 1143 and the second housing layer 1163 are formed by photo-curing glue or thermosetting glue after being transferred through the first groove 1101 or the second groove 1102. The photo-curable glue (i.e., the first housing layer 1143 or the second housing layer 1163) includes one or more of epoxy, acrylate, polyurethane acrylate. In addition, the photo-curing glue also comprises a photoinitiator, a solvent and an auxiliary agent. Alternatively, the photoinitiator may be, but is not limited to, 1-hydroxycyclohexylphenyl ketone (1-hydroxycyclohexyl phenyl ketone, photoinitiator 184), diphenyl- (2, 4, 6-Trimethylbenzoyl) oxy-phosphorus (Diphenyl) (2, 4, 6-Trimethylbenzoyl) oxy, TPO), benzophenone (Benzophenone, BP), propylthioxanthone (ITX), 2, 4-Diethylthioxanthone (DETX), 2-hydroxy-2-methyl-1-phenyl acetone (photoinitiator 1173), photoinitiator 1000 (20 wt% 1-hydroxycyclohexylphenyl ketone with 80wt% 2-methyl-2-hydroxy-1-phenyl-1-propanone), photoinitiator 1300 (30 wt% of photoinitiator 369 with 70wt% of photo initiator 651 (dimethylbenzoyl ketal, DMPA)), photoinitiator (25 wt% of photo initiator BAPO (also known as photo initiator 819) with 75wt% of photo initiator), photoinitiator (50 wt% of photo initiator 1173) with 50wt% of photo initiator 1700, or the like. Alternatively, the solvent may be, but is not limited to being, one or more of ethyl acetate, propyl acetate, butyl acetate, cyclohexanone, propylene glycol methyl ether acetate, ethylene glycol monobutyl ether, ethylene glycol monomethyl ether, isopropyl alcohol, methyl ethyl ketone, and the like. The auxiliary agent comprises an antifoaming agent, a leveling agent and the like. The defoamer can be one or more of an organosilicon defoamer and a polyether defoamer, and the leveling agent can be, but is not limited to, an organosilicon leveling agent and the like. The total thickness of the first housing layer 1143 and the second housing layer 1163 is 1.3 times to 1.5 times the length of the housing cavity 112 along the stacking direction of the first housing layer 1143 and the second housing layer 1163, specifically, but not limited to, 1.3 times, 1.4 times, 1.5 times, etc., the thickness of the first housing layer 1143 and the second housing layer 1163 is too thin to obtain the required size of the housing cavity 112, the thickness of the first housing layer 1143 and the second housing layer 1163 is too thick, and the cost and the thickness of the decorative film 100 are increased. In some embodiments, the total thickness of the first housing layer 1143 and the second housing layer 1163 is 1.4 μm to 195 μm, and in particular may be, but not limited to, 1.4 μm, 2 μm, 10 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 130 μm, 160 μm, 180 μm, 195 μm, etc.

Optionally, the first substrate layer 1141 includes one or more of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), and the like. The thickness of the first substrate layer 1141 is 30 μm to 100 μm, and specifically may be, but not limited to, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc. The second substrate layer 1161 includes one or more of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), and the like. The thickness of the second substrate layer 1161 is 30 μm to 100 μm, and specifically may be, but not limited to, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc.

When the decorative film 100 is applied to a housing of a 3D structure, the first substrate layer 1141 includes one or more of polycarbonate and polyethylene terephthalate, the second substrate layer 1161 includes one or more of polycarbonate and polyethylene terephthalate, the first housing layer 1143 includes one or more of acrylate, polyurethane, and urethane acrylate, and the second housing layer 1163 includes one or more of acrylate, polyurethane, and urethane acrylate. Therefore, the color-changing layer 10 can be bent and deformed, and the decorative film 100 is prevented from cracking in the bending and deforming process, so that the decorative film 100 can better use a shell with a 3D structure.

In a specific embodiment, when the decorative film 100 is applied to a 3D structural shell, the first substrate layer 1141 and the second substrate layer 1161 are both polyethylene terephthalate layers, and the first accommodating layer 1143 and the second accommodating layer 1163 are both formed by acrylate glue, so that the prepared color-changing layer 10 has better toughness and flexibility, and can be subjected to bending deformation, so that the decorative film 100 is prevented from cracking in the bending deformation process, and the decorative film 100 can be better used for a 3D structural shell.

Optionally, at least part of the plurality of color shifting elements 13 are partially of a first color. The first colors of the color-changing elements 13 may be the same or different, and the color-changing elements 13 are arranged according to a preset rule, when the decorative film 100 is in the first magnetic field, the first colors of the color-changing elements 13 face the first surface 111, and a first preset pattern is exposed on the first surface 111 side of the decorative film 100, wherein the first pattern is the first preset pattern. When the decorative film 100 is in the second magnetic field, the first color of the plurality of color-changing elements 13 faces away from the first surface 111, and the first surface 111 side of the decorative film 100 reveals a pattern composed of the colors of the portions of the color-changing elements 13 facing away from the first color. Thus, by designing the arrangement rule of the first color of each color change element 13, the pattern and the color of the first pattern (first preset pattern) exposed by the decorative film 100 in the first magnetic field can be controlled, thereby obtaining the decorative film 100 having a color pattern in the first magnetic field. Alternatively, the first color may be, but is not limited to being, one or more of red, green, blue, white, orange, yellow, cyan, violet, and the like. For example, in the embodiment of fig. 5, the colors of the various portions of the love pattern may or may not be the same, such as a color that exhibits a uniform color, or a gradient or seven colors, or the like.

Optionally, at least a portion of another portion of the plurality of color shifting elements 13 also has a second color; in other words, at least part of the plurality of color-changing elements 13 has a first color in part and another part also has a second color. The second colors of the color-changing elements 13 may be the same or different, and the color-changing elements 13 are arranged according to a preset rule, when the decorative film 100 is in the second magnetic field, the second colors of the color-changing elements 13 face the first surface 111, and a second preset pattern is exposed on the first surface 111 side of the decorative film 100, wherein the second pattern is the second preset pattern. Alternatively, the second color may be the same as or different from the first color, and furthermore, the second color of each color-changing element 13 may be partially the same as or partially different from the first color. When the first color and the second color of each color-changing element 13 are the same, the first preset pattern is the same as the second preset pattern, in other words, the first pattern is the same as the second pattern. Thus, by designing the arrangement rule of the second color of each color change element 13, the pattern and the color of the second pattern (second preset pattern) exposed by the decorative film 100 in the second magnetic field can be controlled, thereby obtaining the decorative film 100 having a color pattern in the second magnetic field. Alternatively, the second color may be, but is not limited to being, one or more of red, green, blue, white, orange, yellow, cyan, violet, and the like. For example, in the embodiment of fig. 7, the colors of the various portions of the prismatic pattern that are connected end-to-end may be the same or may be different, such as a color that exhibits a uniform color, or a gradient or seven colors, etc.

Referring again to fig. 8, in some embodiments, the plurality of color-changing elements 13 includes a plurality of first color-changing elements 131, a plurality of second color-changing elements 133, and a plurality of third color-changing elements 135. The first color-changing element 131, the second color-changing element 133 and the third color-changing element 135 have different colors from each other; in other words, the first color of the first color-changing element 131, the second color-changing element 133 and the third color-changing element 135 are different from each other, and the second color of the first color-changing element 131, the second color-changing element 133 and the third color-changing element 135 are also different from each other. The first color-changing elements 131, the second color-changing elements 133 and the third color-changing elements 135 are arranged according to a predetermined rule, so that the first pattern is a first predetermined pattern and the second pattern is a second predetermined pattern. In an embodiment, the first color-changing element 131 has a first sub-color and a second sub-color, the second color-changing element 133 has a third sub-color and a fourth sub-color, and the third color-changing element 135 has a fifth sub-color and a sixth sub-color, wherein the first color includes the first sub-color, the third sub-color and the fifth sub-color, and the second color includes the second sub-color, the fourth sub-color and the sixth sub-color. When the decorative film 100 is in the first magnetic field, the first sub-color of the first color-changing element 131, the third sub-color of the second color-changing element 133, and the fifth sub-color of the third color-changing element 135 face the first surface 111, so that the first surface 111 side of the decorative film 100 reveals the first preset pattern; when the decorative film 100 is in the second magnetic field, the second sub-color of the first color-changing element 131, the fourth sub-color of the second color-changing element 133, and the sixth sub-color of the third color-changing element 135 face the first surface 111, so that the first surface 111 side of the decorative film 100 reveals the second preset pattern. In a specific embodiment, the first sub-color is red, the third sub-color is green, the fifth sub-color is blue, the second sub-color, the fourth sub-color and the sixth sub-color are all white, the first preset pattern is a color pattern formed by arranging three color-changing elements 13 of red, green and blue according to a preset rule, and the second preset pattern is a white pattern (the color-changing elements 13 are only arranged in a pattern area) or a whole white (the color-changing elements 13 cover the whole decorative film 100). In another embodiment, the first sub-color is red, the third sub-color is green, the fifth sub-color is blue, the second sub-color is green, the fourth sub-color is blue, and the sixth sub-color is red, so that the first preset pattern and the second preset pattern are all color patterns of the three color-changing elements 13 of red, green and blue, which are arranged according to a preset rule, but the colors of the positions are different. The first color changing element 131, the second color changing element 133 and the third color changing element 135 are just like three sub-pixels in one pixel, and fine color patterns can be obtained by adjusting the position distribution of the three sub-pixels of the first color changing element 131, the second color changing element 133 and the third color changing element 135.

Referring to fig. 10 and 11, in some embodiments, the color-changing element 13 includes a body portion 132, a magnetic layer 134 and a first color layer 136, the body portion 132 has a first rotating surface 1321 and a second rotating surface 1323, the magnetic layer 134 is disposed on the first rotating surface 1321, the first color layer 136 is disposed on a side of the magnetic layer 134 away from the body portion 132 or the first color layer 136 is disposed on the second rotating surface 1323, the first color layer 136 has a first color, and when the decorative film 100 is in the first magnetic field, the first color layer 136 faces the first surface 111, so that the first surface 111 side of the decorative film 100 reveals the first pattern. As shown in fig. 10, in an embodiment, the magnetic layer 134 is disposed on the first rotating surface 1321, the first color layer 136 is disposed on a side of the magnetic layer 134 away from the main body 132, and the second rotating surface 1323 has a second color, which is a color of the main body 132 itself. As shown in fig. 11, in another embodiment, the magnetic layer 134 is disposed on the first rotating surface 1321, the first color layer 136 is disposed on the second rotating surface 1323, and the magnetic layer 134 has a second color, and the second color is the color of the magnetic layer 134 itself.

When the decorative film 100 is in the first magnetic field, the interaction between the magnetic layer 134 and the first magnetic field causes the color-changing elements 13 to move, the first color layer 136 of the color-changing elements 13 faces the first surface 111, so that the first surface 111 side of the color-changing layer 10 reveals the first pattern (i.e. the first pattern can be observed), and the pattern and color of the first pattern are determined by the color and arrangement rule of the first color layer 136 of each color-changing element 13; conversely, when the decorative film 100 is in the second magnetic field, the interaction of the magnetic layer 134 and the second magnetic field causes the color-changing elements 13 to move again, so that the first color layer 136 of the color-changing elements 13 faces away from the first surface 111, and the first surface 111 side of the color-changing element 10 reveals the second pattern, and the pattern and color of the second pattern are determined by the color and arrangement rule of the body portion 132 of each color-changing element 13 (see fig. 10, for example, when the color-changing elements 13 are distributed throughout the decorative film 100, the entire first surface 111 is the color of the body portion 132, when the color-changing elements 13 are distributed according to the preset rule, the first surface 111 side views the pattern with the color of the body portion 132 distributed according to the preset rule), or the color and arrangement rule of the magnetic layer 134 itself (see fig. 11, for example, when the color-changing elements 13 are distributed throughout the decorative film 100, the entire first surface 111 side views the color with the color of the magnetic layer 134 according to the preset rule).

Alternatively, the body portion 132 may be, but is not limited to being, one or more of hollow glass beads, plastic beads (e.g., polycarbonate, polymethyl methacrylate, polyethylene terephthalate, etc.), ceramic beads, and the like. The shape of the body portion 132 may be a regular shape such as a sphere, an ellipsoid, a square, etc.; further, the shape of the body portion 132 may also be irregular. Alternatively, the equivalent sphere diameter of the color-changing element 13 is 1 μm to 100 μm; specifically, it may be, but is not limited to, 1 μm, 5 μm, 10 μm, 30 μm, 50 μm, 60 μm, 80 μm, 100 μm, etc. The equivalent sphere diameter of the color-changing element 13 is too small, which increases the difficulty and cost of the manufacturing process, and the equivalent sphere diameter of the color-changing element 13 is too large, which reduces the fineness of the surface patterns (such as the first pattern and the second pattern) of the decorative film 100. Alternatively, the equivalent sphere diameter of the body portion 132 is 1 μm to 100 μm; specifically, it may be, but is not limited to, 1 μm, 5 μm, 10 μm, 30 μm, 50 μm, 60 μm, 80 μm, 100 μm, etc. The equivalent sphere diameter of the body 132 is too small, which increases the difficulty and cost of the manufacturing process, and the equivalent sphere diameter of the body 132 is too large, which reduces the fineness of the surface patterns (such as the first pattern and the second pattern) of the decorative film 100.

Optionally, the magnetic layer 134 includes, but is not limited to including, one or more of iron (Fe), cobalt (Co), nickel (Ni), and the like. The thickness of the magnetic layer 134 is 20nm to 60nm; specifically, it may be, but is not limited to, 20nm, 30nm, 40nm, 50nm, 60nm, etc. When the thickness of the magnetic layer 134 is too thin, the response speed is slow when the decorative layer is in the magnetic field (the first magnetic field or the second magnetic field), and when the thickness of the magnetic layer 134 is too thick, the size and weight of the color-changing element 13 are increased, and the cost is increased. Alternatively, the magnetic layer 134 may be formed using one or more of an evaporation coating process, a sputter coating process, an Atomic Layer Deposition (ALD) technique, and the like.

Alternatively, the first color layer 136 may be an optical coating layer including In, sn, tiO ₂ 、Ti ₃ O ₅ 、NbO ₂ 、Nb ₂ O ₃ 、Nb ₂ O ₂ 、Nb ₂ O ₅ 、SiO ₂ 、ZrO ₂ One or more of the following. Alternatively, the thickness of the first color layer 136 may be, but is not limited to, 50nm to 1000nm; specifically, it may be, but is not limited to, 10nm, 50nm, 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 800nm, 1000nm, etc. Optionally, the (th)A color layer 136 may include one or more optical coating layers. In an embodiment, the number of the optical coating layers in the first color layer 136 may be 3 to 15, specifically, but not limited to 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, etc. Alternatively, the thickness of each optical coating layer is 20nm to 60nm, and specifically, may be, but not limited to, 20nm, 25nm, 30nm, 35nm, 40nm, 50nm, 60nm, etc. The first color layer 136 of the different color-changing elements 13 has different colors by adjusting the thickness, the material and the number of the optical coating layers. In a specific embodiment, the first color layer 136 includes two optical coating layers having different refractive indexes that are alternately stacked in order, for example, including a silicon oxide layer and a titanium oxide layer that are alternately stacked in order.

Alternatively, the optical coating layer may be formed using one or more of an evaporation coating process, a sputter coating process, an Atomic Layer Deposition (ALD) technique, and the like.

Referring to fig. 12 and 13, in other embodiments, the color-changing element 13 further includes a second color layer 138, the second color layer 138 has a second color, and when the first color layer 136 is disposed on a side of the magnetic layer 134 away from the main body 132, the second color layer 138 is disposed on a second rotating surface 1323 (as shown in fig. 12). When the first color layer 136 is disposed on the second rotating surface 1323, the second color layer 138 is disposed on a side of the magnetic layer 134 away from the main body 132 (as shown in fig. 13). When the decorative film 100 is in the second magnetic field, the second color layer 138 faces the first surface 111, so that the first surface 111 side of the decorative film 100 reveals the second pattern, and the pattern and color of the second pattern are determined by the color and arrangement of the second color layer 138 of each color-changing element 13.

Alternatively, the second color layer 138 has a second color, and the second color layer 138 may be an optical coating layer. Alternatively, the thickness of the second color layer 138 may be, but is not limited to, 50nm to 1000nm; specifically, it may be, but is not limited to, 10nm, 50nm, 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 800nm, 1000nm, etc. Alternatively, the second color layer 138 may include one or more optical coating layers. In an embodiment, the number of the optical coating layers in the second color layer 138 may be 3 to 15, specifically, but not limited to, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, etc. For a detailed description of the optical coating layer, please refer to the detailed description of the above embodiments, and the detailed description is omitted here.

Referring to fig. 14 and 15, in some embodiments, the color-changing element 13 further includes an adhesion layer 139, and the adhesion layer 139 is disposed on a surface of the magnetic layer 134 away from the body portion 132. As shown in fig. 14, when the first color layer 136 is disposed on the side of the magnetic layer 134 away from the body portion 132, the adhesion layer 139 is disposed between the magnetic layer 134 and the first color layer 136, for improving the adhesion of the first color layer 136 on the magnetic layer 134. As shown in fig. 15, when the second color layer 138 is disposed on a side of the magnetic layer 134 away from the body portion 132, an adhesion layer 139 is disposed between the magnetic layer 134 and the second color layer 138 for improving adhesion of the second color layer 138 on the magnetic layer 134. The adhesion layer 139 can enable the first color layer 136 or the second color layer 138 to be better adhered to the magnetic layer 134, so that the first color layer 136 or the second color layer 138 of the color-changing element 13 is better prevented from falling off in the use process, and the service life of the decorative film 100 is prolonged.

Optionally, the adhesion layer 139 includes, but is not limited to including chromium or the like. The thickness of the adhesion layer 139 is 20nm to 60nm. Specifically, it may be, but is not limited to, 20nm, 25nm, 30nm, 35nm, 40nm, 50nm, 60nm, etc.

Referring to fig. 2 again, in an embodiment, the plurality of color-changing elements 13 includes a plurality of first color-changing elements 131, a plurality of second color-changing elements 133, and a plurality of third color-changing elements 135. Half of the first color-changing elements 131 are red and half are white; half of the second color-changing elements 133 are green and half are white; half of the third color shifting element 135 is blue and half is white. Specifically, each color-changing element 13 includes a body 132, a magnetic layer 134, an adhesion layer 139 and a first color layer 136, where the magnetic layer 134, the adhesion layer 139 and the first color layer 136 are sequentially stacked on a first rotation surface 1321 of the body 132. The body 132 is a spherical hollow glass bead, the hollow glass bead is white, the magnetic layer 134 is a Ni layer, the adhesion layer 139 is a Cr layer, and the first color layer 136 is a silicon dioxide layer and a titanium dioxide layer which are alternately laminated in sequence, wherein the silicon dioxide layer is arranged close to the Cr layer compared with the titanium dioxide layer; the first color layer 136 of the first color-changing element 131 is red, the first color layer 136 of the second color-changing element 133 is green, and the first color layer 136 of the third color-changing element 135 is blue. When the decorative film 100 is in the first magnetic field, the first color layer 136 faces the first surface 111, and the first pattern exposed on the first surface 111 side of the decorative film 100 is the pattern and color of the red color-changing element 13, the green color-changing element 13 and the blue color-changing element 13 which are arranged according to a preset rule; when the decorative film 100 is in the second magnetic field, the first color layer 136 faces away from the first surface 111 (i.e. faces the second surface 113), and the second pattern exposed on the first surface 111 is the pattern and the color of the white color-changing element 13 after being arranged according to the preset rule. The red color-changing element 13, the green color-changing element 13 and the blue color-changing element 13 are just like three sub-pixels in one pixel, and fine color patterns can be obtained by adjusting the position distribution of the three sub-pixels of the red color-changing element 13, the green color-changing element 13 and the blue color-changing element 13.

In some embodiments, color shifting layer 10 further includes a lubricant disposed within receiving cavity 112 to reduce the resistance to rotation of color shifting element 13 within receiving cavity 112. The lubricant can reduce the friction between the color changing element 13 and the inside of the accommodating cavity 112 when moving, so that the resistance of the color changing element 13 to moving is reduced, and the response speed of the decorative film 100 to color change is improved. Alternatively, the lubricant may be, but is not limited to being, one or more of a solid lubricant or a lubricating fluid. The solid lubricant may be, but is not limited to, one or more of solid oil, graphite, petrolatum, and the like. The lubricating fluid may be, but is not limited to being, one or more of liquid oil, graphite, and the like. When the lubricant is a lubricating liquid, the color-changing element 13 is suspended in the lubricating liquid, so that the friction force between the color-changing element 13 and the inside of the accommodating cavity 112 during movement can be reduced to a greater extent, and the response speed of changing color and changing patterns of the decorative film 100 can be improved better. When the color-changing layer 10 is composed of the supporting layer 11, the color-changing element 13 or the supporting layer 11, the color-changing element 13 and the lubricant, the first surface 111 and the second surface 113 of the supporting layer 11 are two surfaces disposed opposite to each other of the color-changing layer 10.

Referring to fig. 16, the decoration film 100 of the embodiment of the present application may further include a first electromagnetic layer 30, a second electromagnetic layer 50, and a shielding layer 70. The first electromagnetic layer 30 is disposed on the first surface 111 of the carrier layer 11, and the first electromagnetic layer 30 is used for loading a first electrical signal. The second electromagnetic layer 50 is disposed on the second surface 113 of the carrier layer 11, and the second electromagnetic layer 50 is used for loading a second electrical signal, and the first electrical signal and the second electrical signal cooperate to generate a first magnetic field or a second magnetic field. The shielding layer 70 is disposed on a surface of the second electromagnetic layer 50 remote from the color change layer 10. The first magnetic field and the second magnetic field are used for driving the color changing element 13 to move. Alternatively, the first electrical signal may be, but is not limited to being, one or more of a voltage or a current. The second electrical signal may be, but is not limited to being, one or more of a voltage or a current.

Specifically, when the first electromagnetic layer 30 is energized, the first electromagnetic layer 30 generates a first magnetic field, the color-changing elements 13 are moved under the driving of the first magnetic field, so as to be orderly arranged, so that the first surface 111 side (i.e., the first electromagnetic layer 30 side) of the decorative film 100 reveals the first pattern, when the first electromagnetic layer 30 is deenergized, the first magnetic field disappears, and when the decorative film 100 is moved (e.g., rocked), the color-changing elements 13 are changed into an irregular state again due to the fact that the color-changing elements 13 can be rotated in the accommodating cavity 112, and the first surface 111 side of the decorative film 100 reveals the colors of the plurality of color-changing elements 13 in the irregular state. When the second electromagnetic layer 50 is energized, the second electromagnetic layer 50 generates a second magnetic field, the color-changing elements 13 are moved under the driving of the second magnetic field, and are orderly arranged, so that the first surface 111 side (i.e., the second electromagnetic layer 50 side) of the decorative film 100 reveals the second pattern, when the second electromagnetic layer 50 is deenergized, the second magnetic field disappears, when the decorative film 100 is moved, the color-changing elements 13 are changed into an irregular state again, and the first surface 111 side of the decorative film 100 reveals the colors of the plurality of color-changing elements 13 in the irregular state. Or, when the first electromagnetic layer 30 is energized, the first electromagnetic layer 30 generates a second magnetic field, the color-changing elements 13 are moved under the driving of the second magnetic field, and are orderly arranged, so that the second pattern is exposed on the first surface 111 side (i.e., the first electromagnetic layer 30 side) of the decorative film 100, when the first electromagnetic layer 30 is deenergized, the second magnetic field disappears, when the decorative film 100 is moved, the color-changing elements 13 are changed into an irregular state again, and the first surface 111 side of the decorative film 100 exposes the colors of the plurality of color-changing elements 13 in the irregular state. When the second electromagnetic layer 50 is energized, the second electromagnetic layer 50 generates a first magnetic field, the color-changing elements 13 are moved under the driving of the first magnetic field, and are orderly arranged, so that the first surface 111 side (i.e., the second electromagnetic layer 50 side) of the decorative film 100 reveals the first pattern, when the second electromagnetic layer 50 is deenergized, the first magnetic field disappears, when the decorative film 100 is moved, the color-changing elements 13 are changed into an irregular state again, and the first surface 111 side of the decorative film 100 reveals the colors of the plurality of color-changing elements 13 in the irregular state. In addition, the first electromagnetic layer 30 and the second electromagnetic layer 50 may be subjected to different voltages or currents, so that a first magnetic field or a second magnetic field is generated between the first electromagnetic layer 30 and the second electromagnetic layer 50, so that the color-changing element 13 is moved under the driving of the first magnetic field or the second magnetic field, and is orderly arranged, so that the first surface 111 side (i.e. the first electromagnetic layer 30 side) of the decorative film 100 reveals the first pattern or the second pattern.

When the decoration film 100 of the present application is applied to an electronic device, the display and disappearance of the first pattern and the second pattern on the first surface 111 side of the decoration film 100 can be controlled by software, specifically, a user can select a pattern and a color to be replaced on a user interface to send a request for changing a pattern or changing a color, when the controller of the electronic device receives the request for changing the pattern or changing the color, the controller of the electronic device generates a first magnetic field or a second magnetic field by powering on the first electromagnetic layer 30 or the second electromagnetic layer 50, so that the color-changing element 13 sends movement such as rotation under the drive of the first magnetic field or the second magnetic field to perform ordered arrangement, thereby exposing the first pattern on the first surface 111 side (or the first electromagnetic layer 30 side) of the decoration film 100 and then the second pattern, thereby realizing the change of the color and the pattern, and improving the user experience.

Alternatively, the first electromagnetic layer 30 is optically transparent, and the first electromagnetic layer 30 may include, but is not limited to, one or more conductive lines including Indium Tin Oxide (ITO), nano-silver (Ag), and the like. Referring to fig. 17, in some embodiments, the first electromagnetic layer 30 includes a third substrate layer 31 and a first conductive line 33, the first conductive line 33 is disposed on the surface or inside of the third substrate layer 31, when the first conductive line 33 is powered on, a first magnetic field or a second magnetic field is generated, and when the first conductive line 33 is powered off, the first magnetic field or the second magnetic field disappears. The third substrate layer 31 includes one or more of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), and the like. The first conductive line 33 includes one or more of Indium Tin Oxide (ITO), nano silver (Ag), and the like. Alternatively, the thickness of the third substrate layer 31 is 30 μm to 100 μm, and in particular, may be, but not limited to, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc. Alternatively, the first electro-magnetic layer 30 may be adhered to the surface of the color-changing layer 10 by an adhesive (not shown) such as an optical adhesive (OCA adhesive, thickness 20 μm to 30 μm). Referring to fig. 18, in other embodiments, the first electromagnetic layer 30 includes a first magnetic member 32 and a third conductive line 34 surrounding the first magnetic member 32, when the third conductive line 34 is energized, the first magnetic member 32 is magnetized to generate a first magnetic field or a second magnetic field, and when the third conductive line 34 is de-energized, the first magnetic member 32 is demagnetized, and the first magnetic field or the second magnetic field disappears. Alternatively, the first magnetic member 32 may be, but is not limited to, a magnetic material such as soft iron, silicon steel, or the like. The third conductive line 34 includes one or more of Indium Tin Oxide (ITO), nano silver (Ag), and the like.

Alternatively, the second electromagnetic layer 50 may be light transmissive or opaque, and the second electromagnetic layer 50 may include, but is not limited to, one or more conductive lines including Indium Tin Oxide (ITO), nano-silver (Ag), copper, aluminum, tin, gold, and the like. Referring to fig. 17 again, in some embodiments, the second electromagnetic layer 50 includes a fourth substrate layer 51 and a second conductive line 53, the second conductive line 53 is disposed on the surface or inside of the fourth substrate layer 51, when the second conductive line 53 is powered on, a second magnetic field or a first magnetic field is generated, and when the first conductive line 33 is powered off, the second magnetic field or the first magnetic field disappears. The fourth substrate layer 51 includes one or more of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), and the like. The second conductive line 53 includes one or more of Indium Tin Oxide (ITO), nano silver (Ag), copper, aluminum, tin, gold, and the like. Alternatively, the thickness of the fourth substrate layer 51 is 30 μm to 100 μm, and in particular, may be, but not limited to, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, etc. Alternatively, the second electro-magnetic layer 50 may be adhered to the surface of the color-changing layer 10 remote from the first electro-magnetic layer 30 by an adhesive (not shown) such as an optical adhesive (OCA adhesive, thickness 20 μm to 30 μm). Referring to fig. 18 again, in other embodiments, the second electromagnetic layer 50 includes a second magnetic element 52 and a fourth conductive line 54 surrounding the second magnetic element 52, when the fourth conductive line 54 is energized, the second magnetic element 52 is magnetized to generate a second magnetic field or a first magnetic field, and when the fourth conductive line 54 is de-energized, the second magnetic element 52 is demagnetized, and the second magnetic field or the first magnetic field disappears. Alternatively, the second magnetic member 52 may be, but is not limited to, a magnetic material such as soft iron, silicon steel, or the like. The fourth conductive line 54 includes one or more of Indium Tin Oxide (ITO), nano silver (Ag), copper, aluminum, tin, gold, and the like.

Alternatively, the masking layer 70 may be, but is not limited to, a light-blocking ink that absorbs or reflects light. Alternatively, the masking layer 70 may be black, white, or gray. The shielding layer 70 is used to prevent the interior components of the electronic device from being visible to the side of the decorative film 100 away from the shielding layer 70 when the decorative film 100 is applied to the electronic device. Alternatively, the thickness of the shielding layer 70 is 5 μm to 50 μm, and in particular, the thickness of the shielding layer 70 may be, but is not limited to, 5 μm, 8 μm, 10 μm, 12 μm, 15 μm, 18 μm, 20 μm, 22 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. Alternatively, the masking layer 70 may be one layer or may be a plurality of layers, such as 2 layers, 3 layers, 4 layers, or 5 layers. When the shielding layer 70 is a plurality of layers, it has a better shielding effect than one layer. Alternatively, the thickness of each masking layer 70 is 8 μm to 12 μm, and in particular, may be, but not limited to, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, etc. Each masking layer 70 may be formed by: the shading ink is coated on the surface of the second electromagnetic layer 50, and baked at 70 ℃ to 80 ℃ for 30min to 60min to form a shading layer 70.

Referring to fig. 19, the embodiment of the present application further provides a method for preparing a decorative film 100, where the method may be used to prepare the decorative film 100 of the embodiment of the present application, where the decorative film 100 includes a color-changing layer 10, and the method includes:

S201, preparing a first sub-carrier layer 114, where the first sub-carrier layer 114 has a plurality of first grooves 1101;

specifically, preparing the first sub-carrier layer 114, the first sub-carrier layer 114 having a plurality of first grooves 1101 includes:

1) Providing a first substrate layer 1141, forming a first glue layer on the first substrate layer 1141; and

alternatively, as shown in S1 of fig. 21, a photo-setting glue or a thermosetting glue is applied to the surface of the first substrate layer 1141, and after the solvent is removed, a first glue layer is formed on the first substrate layer 1141.

For a detailed description of the components described in the above embodiments, such as the first substrate layer 1141, the photo-setting glue, and the thermosetting glue, please refer to the above embodiments, and the detailed description is omitted here.

2) A plurality of first grooves 1101 are transferred to a surface of the first glue layer far from the first substrate layer 1141, and cured, so that the first glue layer forms a first accommodating layer 1143, and a first sub-carrier layer 114 is obtained.

Alternatively, as shown in S2 in fig. 21, after the first groove 1101 is transferred onto the first glue layer by using a transfer mold, heat curing (heating to a glue curing temperature) or photo curing (under ultraviolet light such as an LED lamp or a mercury lamp) is performed to cure the first glue layer to form the first accommodating layer 1143, thereby obtaining the first sub-carrier layer 114.

For a detailed description of the components of the first sub-carrier 114 and the like described in the above embodiments, please refer to the above embodiments, and the detailed description is omitted here.

S202, preparing a second sub-bearing layer 116, wherein the second sub-bearing layer 116 is provided with a plurality of second grooves 1102; and

the preparation method of the second sub-carrier layer 116 may be the same as the preparation method of the first sub-carrier layer 114, and the details are described in the corresponding parts and are not repeated here.

For a detailed description of the components of the second sub-carrier layer 116 and the like described in the above embodiments, please refer to the above embodiments, and the detailed description is omitted here.

S203, arranging a plurality of color-changing elements 13 in a plurality of first grooves 1101 of a first sub-bearing layer 114, arranging a second sub-bearing layer 116 on the surface of the first sub-bearing layer 114 with the first grooves 1101 in a reverse manner, so that the first grooves 1101 and the second grooves 1102 are in one-to-one correspondence, and enclosing a containing cavity 112 in opposite directions of each first groove 1101 and one second groove 1102 to obtain a color-changing layer 10; the color-changing elements 13 have color and magnetism, and can rotate freely in the accommodating cavity, the surface of the first sub-bearing layer 114 far away from the second sub-bearing layer 116 is a first surface 111, and when the decorative film 100 is in the first magnetic field, the color-changing elements 13 cooperate to make the first surface 111 side of the decorative film 100 expose the first pattern.

Optionally, as shown in fig. 20, according to the pattern of the first pattern to be revealed and each color effect to be presented, decomposition is performed to obtain dots (similar pixels) having different colors (see S21 in fig. 20), the arrangement of the plurality of color-changing elements 13 of each dot is performed according to the color to be presented by each dot (see S22 in fig. 20), for example, the red color-changing elements, the blue color-changing elements, the green color-changing elements, etc. are distributed and arranged according to a certain rule to realize the color to be presented of each dot, thereby obtaining the distribution pattern of the color-changing elements 13 of each color, and the screen printing of the color-changing elements 13 of each color is prepared according to the distribution pattern. In a specific embodiment, the plurality of color-changing elements 13 include a plurality of first color-changing elements 131, a plurality of second color-changing elements 133 and a plurality of third color-changing elements 135, wherein a portion of the first color-changing elements 131 has red color, a portion of the second color-changing elements 133 has green color, a portion of the third color-changing elements 135 has blue color, and the first pattern is split into a plurality of pixel points before the plurality of color-changing elements 13 are disposed in the plurality of first grooves 1101 of the first sub-carrier 114, and the first color-changing elements 131, the second color-changing elements 133 and the third color-changing elements 135 are arranged according to a predetermined rule according to the color of each pixel point, so that the first pattern is a predetermined pattern.

As shown in S3 to S6 in fig. 21, the plurality of color-changing elements 13 are disposed in the plurality of first grooves 1101 by screen printing, and when the plurality of color-changing elements 13 include color-changing elements 13 of a plurality of first colors or color-changing elements 13 of a plurality of second colors, the color-changing elements 13 of different first colors and the color-changing elements 13 of different second colors may be printed one by one according to a preset rule so that the plurality of color-changing elements 13 are disposed in the plurality of first grooves 1101, for example, the first color-changing element 131 (e.g., red), the second color-changing element 133 (e.g., green), and the third color-changing element 135 (e.g., blue) are sequentially printed in the plurality of first grooves 1101. A lubricant (e.g., injection of a lubricating fluid) is then added to the first recess 1101. The second sub-carrier layer 116 is then inverted on the surface of the first sub-carrier layer 114 having the first groove 1101, so as to obtain the color-changing layer 10. The first grooves 1101 and the second grooves 1102 are disposed opposite to each other to define a plurality of accommodating cavities 112 (as shown in S5 in fig. 21), the first sub-carrier layer 114 and the second sub-carrier layer 116 form the carrier layer 11, and the color-changing element 13 has a color. When the decoration film 100 is in the first magnetic field, the first surface 111 side of the decoration film 100 reveals the first pattern; when the decoration film 100 is in the second magnetic field, the first surface 111 side of the decoration film 100 reveals the second pattern. In one embodiment, the first recess 1101 and the second recess 1102 are hemispherical, the accommodating cavity 112 is spherical, and the color-changing element 13 is spherical.

For a detailed description of the components described in the above embodiments, such as the color-changing element 13, the carrier layer 11, the first pattern, the second pattern, the first magnetic field, and the second magnetic field, please refer to the above embodiments, and the detailed description is omitted here.

Referring to fig. 22, in some embodiments, the method for preparing the plurality of color-changing elements 13 includes:

s2031, providing a body portion 132, the body portion 132 having a first rotation surface 1321 and a second rotation surface 1323;

for a detailed description of the body 132, please refer to the above embodiment, and the detailed description is omitted herein.

S2032, plating the magnetic layer 134 on the first rotation surface 1321;

alternatively, a film layer containing one or more materials of iron (Fe), cobalt (Co), nickel (Ni), and the like is plated on the first rotation surface 1321 as the magnetic layer 134 using an evaporation plating process, a sputtering plating process, or an Atomic Layer Deposition (ALD) technique. For a detailed description of the magnetic layer 134, please refer to the above embodiment, and the detailed description is omitted here.

S2033, plating an adhesion layer on the magnetic layer 134; and

optionally, a film layer containing chromium is deposited on the magnetic layer 134 as an adhesion layer by an evaporation coating process, a sputtering coating process, or an Atomic Layer Deposition (ALD) technique to improve adhesion of the first color layer 136 or the second color layer 138 on the magnetic layer 134. For a detailed description of the adhesive layer, please refer to the above embodiment, and the detailed description is omitted herein.

S2034, the first color layer 136 is plated on the surface of the adhesion layer remote from the body portion 132, or the first color layer 136 is plated on the second rotation surface 1323.

Alternatively, an evaporation coating process, a sputter coating process, or an Atomic Layer Deposition (ALD) technique is employed, in, sn, tiO ₂ 、Ti ₃ O ₅ 、NbO ₂ 、Nb ₂ O ₃ 、Nb ₂ O ₂ 、Nb ₂ O ₅ 、SiO ₂ 、ZrO ₂ As a raw material, plating an optical coating layer, which is formed by stacking a plurality of layers, on a surface of the adhesion layer, which is far from the body portion 132, as a first color layer 136; alternatively, an optical coating layer formed by stacking a plurality of layers is coated on the second rotation surface 1323 as the first color layer 136. For a detailed description of the first color layer 136, please refer to the above embodiment, and the detailed description is omitted herein.

Referring to fig. 23, in some embodiments, the first color layer 136 is disposed on a surface of the adhesion layer away from the body portion 132, and the method for preparing the plurality of color-changing elements 13 further includes: s2035, plating a second color layer 138 on the second rotation face 1323.

Alternatively, an evaporation coating process, a sputter coating process, or an Atomic Layer Deposition (ALD) technique is employed, in, sn, tiO ₂ 、Ti ₃ O ₅ 、NbO ₂ 、Nb ₂ O ₃ 、Nb ₂ O ₂ 、Nb ₂ O ₅ 、SiO ₂ 、ZrO ₂ One or more of them serving asAs a raw material, an optical coating layer provided by stacking a plurality of layers is coated on the second rotation surface 1323 as the second color layer 138. For a detailed description of the second color layer 138, please refer to the above embodiment, and the detailed description is omitted herein.

Referring to fig. 24, in other embodiments, the first color layer 136 is disposed on the second rotating surface 1323, and the method for manufacturing the plurality of color-changing elements 13 further includes: s2036, plating a second color layer 138 on the surface of the adhesion layer remote from the body portion 132.

Alternatively, an evaporation coating process, a sputter coating process, or an Atomic Layer Deposition (ALD) technique is employed, in, sn, tiO ₂ 、Ti ₃ O ₅ 、NbO ₂ 、Nb ₂ O ₃ 、Nb ₂ O ₂ 、Nb ₂ O ₅ 、SiO ₂ 、ZrO ₂ One or more of which is used as a raw material, and a plurality of optical coating layers which are stacked and arranged are coated on the second rotating surface 1323 as a second color layer 138. For a detailed description of the second color layer 138, please refer to the above embodiment, and the detailed description is omitted herein.

The detailed description of the same features of the present embodiment as those of the above embodiment is referred to the above embodiment, and will not be repeated here.

Referring to fig. 25, the embodiment of the present application further provides a method for preparing a decorative film 100, where the method may be used to prepare the decorative film 100 of the embodiment of the present application, where the decorative film 100 includes a second electromagnetic layer 50, a color-changing layer 10, and a first electromagnetic layer 30 that are sequentially stacked, and the method includes:

s301, preparing a first sub-carrier layer 114, where the first sub-carrier layer 114 has a plurality of first grooves 1101;

s302, preparing a second sub-bearing layer 116, wherein the second sub-bearing layer 116 is provided with a plurality of second grooves 1102;

S303, arranging a plurality of color-changing elements 13 in a plurality of first grooves 1101 of a first sub-bearing layer 114, arranging a second sub-bearing layer 116 on the surface of the first sub-bearing layer 114 with the first grooves 1101 in a reverse manner, enabling the first grooves 1101 to correspond to the second grooves 1102 one by one, and enclosing a containing cavity 112 in opposite directions of each first groove 1101 and one second groove 1102 to obtain a color-changing layer 10; the color-changing elements 13 have color and magnetism, and can rotate freely in the accommodating cavity, the surface of the first sub-bearing layer 114 far away from the second sub-bearing layer 116 is a first surface 111, when the decorative film 100 is in the first magnetic field, the color-changing elements 13 cooperate to make the first surface 111 side of the decorative film 100 expose the first pattern; for a detailed description of step S301 to step S303, please refer to the description of the corresponding parts of the above embodiments, and the detailed description is omitted herein.

S304, the first electromagnetic layer 30 is disposed on the surface (i.e., the first surface) of the first sub-carrier layer 114 away from the second sub-carrier layer 116, and the second electromagnetic layer 50 is disposed on the surface of the second sub-carrier layer 116 away from the first sub-carrier layer 114.

Alternatively, the first electromagnetic layer 30 is bonded to the first surface 111 with OCA glue and the second electromagnetic layer 50 is bonded to the surface of the color-changing layer 10 remote from the first surface 111. Alternatively, the first conductive line 33 of the first electromagnetic layer 30 and the second conductive line 53 of the second electromagnetic layer 50 face the color-changing layer 10, respectively; in other words, the first conductive line 33 is closer to the color-changing layer 10 than the third substrate layer 31, and the second conductive line 53 is closer to the color-changing layer 10 than the fourth substrate layer 51.

Alternatively, the first and second

electromagnetic layers

30 and 50 may be prepared by the following steps, the following description taking the first electromagnetic layer 30 as an example: a conductive layer (such as an ITO layer, a silver layer) is coated on the third substrate layer 31 by an evaporation coating process, a sputtering coating process, or the like, and etching is performed to form the conductive layer into the first conductive line 33.

Referring to fig. 26 and 27, the embodiment of the present application further provides a housing 400, which includes: the housing body 410 and the decoration film 100 of the embodiment of the present application, the decoration film 100 is disposed on the surface of the housing body 410. Optionally, the decorative film 100 is adhered to the case body 410 by an optical adhesive (not shown). When the decorative film 100 includes the shielding layer 70, the shielding layer 70 is disposed away from the case body 410 compared to the first electromagnetic layer 30.

The housing 400 of the present application may be applied to portable electronic devices such as cell phones, tablet computers, notebook computers, desktop computers, smart bracelets, smart watches, electronic readers, game consoles, and the like. Alternatively, the housing 400 of the present application may be a rear cover (battery cover), a center, a decorative piece, or the like of an electronic device. The housing 400 of the embodiments of the present application may be a 2D structure, a 2.5D structure, a 3D structure, etc. As shown in fig. 28, optionally, the housing body 410 includes a bottom 411 and a side 413 connected to the bottom 411 in a bending manner. The bottom 411 and the side 413 enclose a housing space 401. In some embodiments, the bottom 411 and the side 413 are of unitary construction.

In some embodiments, the material of the housing body 410 may be, but is not limited to, one or more of inorganic glass or resin. Alternatively, the resin may be one or more of polymethyl methacrylate, polycarbonate, polyethylene terephthalate, and the like. Alternatively, the case body 410 is light-transmitting, the light transmittance of the case body 410 may be greater than or equal to 85%, and further, the light transmittance of the case body 410 may be greater than or equal to 90%; specifically, the light transmittance of the case body 410 may be, but is not limited to, 85%, 88%, 90%, 93%, 95%, 97%, 98%, 99%, etc. When the case body 410 is applied to the front cover and the middle frame of the electronic device, the higher the light transmittance of the case body 410 is, the higher the light transmittance is, and the better the display effect of the electronic device is.

Alternatively, the thickness of the case body 410 is 0.3mm to 1mm; specifically, the thickness of the housing body 410 may be, but is not limited to, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, etc. When the casing body 410 is too thin, the supporting and protecting functions cannot be well achieved, and the mechanical strength cannot well meet the requirements of the electronic equipment casing 400, when the casing body 410 is too thick, the weight of the electronic equipment is increased, the hand feeling of the electronic equipment is affected, and the user experience is poor.

For a detailed description of the decorative film 100, please refer to the above embodiment, and the detailed description is omitted here.

Referring to fig. 29 to 31, an embodiment of the present application further provides an electronic device 500, which includes: display assembly 510, housing 400 of the present embodiment, and circuit board assembly 530. The display component 510 is for display; the housing 400 has an accommodating space 401, and the housing 400 is used for carrying the display assembly 510; the circuit board assembly 530 is disposed in the accommodating space 401 and electrically connected to the display assembly 510, for controlling the display assembly 510 to display. In some embodiments, the display assembly 510 is also used to close the accommodating space 401; in other words, the housing 400 and the display assembly 510 enclose a closed accommodating space 401.

The electronic device 500 of the embodiment of the present application may be, but is not limited to, a portable electronic device such as a mobile phone, a tablet computer, a notebook computer, a desktop computer, a smart bracelet, a smart watch, an electronic reader, a game console, and the like.

For a detailed description of the housing 400, please refer to the corresponding parts of the above embodiments, and the detailed description is omitted herein.

Alternatively, the display component 510 may be, but is not limited to being, one or more of a liquid crystal display component, a light emitting diode display component (LED display component), a micro light emitting diode display component (micro LED display component), a sub-millimeter light emitting diode display component (MiniLED display component), an organic light emitting diode display component (OLED display component), and the like.

Referring to fig. 31, optionally, the circuit board assembly 530 may include a processor 531 and a memory 533. The processor 531 is electrically connected to the display module 510 and the memory 533, respectively. The processor 531 is further configured to control the generation of a first magnetic field to cause the plurality of color-changing elements 13 to cooperate to reveal a first pattern on the first surface 111 side of the decorative film, and to control the generation of a second magnetic field to cause the plurality of color-changing elements 13 to cooperate to reveal a second pattern on the first surface 111 side of the decorative film 100. The processor 531 is used for controlling the display component 510 to display, and the memory 533 is used for storing program codes required by the processor 531 to operate, program codes required by the control of the display component 510, display contents of the display component 510, and the like.

In some embodiments, the processor 531 is electrically connected to the first electromagnetic layer 30 and the second electromagnetic layer 50, respectively, and is configured to control the energizing of one or more of the first electromagnetic layer 30 and the second electromagnetic layer 50 to generate the first magnetic field or the second magnetic field, so as to cooperate the plurality of color-changing elements 13 when the first magnetic field is generated, and expose the first pattern on the first surface 111 side of the decorative film 100; when the second magnetic field is generated, the plurality of color change elements 13 are mated, and the second pattern is exposed on the first surface 111 side of the decorative film 100.

Alternatively, the processor 531 includes one or more general-purpose processors 531, wherein the general-purpose processor 531 may be any type of device capable of processing electronic instructions, including a central processing unit (Central Processing Unit, CPU), microprocessor, microcontroller, main processor, controller, ASIC, and the like. The processor 531 is operable to execute various types of digitally stored instructions, such as software or firmware programs stored in the memory 533, that enable the computing device to provide a wide variety of services.

Alternatively, the Memory 533 may include a Volatile Memory (Volatile Memory), such as a random access Memory (Random Access Memory, RAM); the Memory 533 may also include a Non-volatile Memory (Non-VolatileMemory, NVM), such as a Read-Only Memory (ROM), a Flash Memory (FM), a Hard Disk (HDD), or a Solid State Drive (SSD). The memory 533 may also include a combination of the above types of memory.

Reference in the present application to "an embodiment," "implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the embodiments of the present application may be combined arbitrarily without any conflict with each other to form yet another embodiment without departing from the spirit and scope of the present application.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or equivalent replaced without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A decorative film, comprising: a color shifting layer, the color shifting layer comprising:

a plurality of color-changing elements, wherein the color-changing elements are arranged in the accommodating cavities and can freely rotate in the accommodating cavities, one or more color-changing elements are arranged in each accommodating cavity, the color-changing elements have color and magnetism, and at least part of the color-changing elements have a first color;

when the decorative film is in a first magnetic field, a first color of the plurality of color-changing elements faces the first surface, and the plurality of color-changing elements cooperate to expose a first pattern on the first surface side of the decorative film.

2. The decorative film of claim 1 wherein at least a portion of another portion of the plurality of color shifting elements further has a second color, the second color of the plurality of color shifting elements facing the first surface when the decorative film is subjected to a second magnetic field, the plurality of color shifting elements cooperating to reveal a second pattern on the first surface side of the decorative film; wherein the first magnetic field is opposite to the second magnetic field.

3. The decorative film of claim 2 wherein the plurality of color shifting elements comprises a plurality of first color shifting elements, a plurality of second color shifting elements, and a plurality of third color shifting elements, wherein the first color shifting elements, the second color shifting elements, and the third color shifting elements have colors different from each other, and wherein the plurality of first color shifting elements, the plurality of second color shifting elements, and the plurality of third color shifting elements are arranged according to a predetermined rule such that the first pattern is a first predetermined pattern, and the second pattern is a second predetermined pattern.

4. The decorative film of claim 3 wherein the first color shifting element has a first sub-color and a second sub-color, the second color shifting element has a third sub-color and a fourth sub-color, and the third color shifting element has a fifth sub-color and a sixth sub-color; when the decorative film is in a first magnetic field, the first sub-color of the first color-changing element, the third sub-color of the second color-changing element and the fifth sub-color of the third color-changing element face the first surface, so that the first surface side of the decorative film is exposed with a first preset pattern; when the decorative film is in a second magnetic field, the second sub-color of the first color-changing element, the fourth sub-color of the second color-changing element and the sixth sub-color of the third color-changing element face the first surface, so that the second preset pattern is exposed on the first surface side of the decorative film, wherein the first color comprises a first sub-color, a third sub-color and a fifth sub-color, and the second color comprises a second sub-color, a fourth sub-color and a sixth sub-color; the first sub-color, the third sub-color and the fifth sub-color are respectively one of red, green and blue and are different from each other, the second sub-color, the fourth sub-color and the sixth sub-color are respectively one of red, green and blue and are different from each other, and the first preset pattern and the second preset pattern are patterns formed by arranging the red, green and blue according to a preset rule.

5. The decorative film according to claim 2, wherein the color change element includes a body portion having a first rotation surface and a second rotation surface, a magnetic layer provided on the first rotation surface, the first color layer provided on a side of the magnetic layer away from the body portion or the first color layer provided on the second rotation surface, the first color layer having a first color; when the decorative film is in a first magnetic field, the first color layer faces the first surface so that the first surface side of the decorative film exposes a first pattern.

6. The decorative film of claim 5 wherein said color shifting element further comprises a second color layer disposed on said second rotational surface when said first color layer is disposed on a side of said magnetic layer remote from said body portion; when the first color layer is arranged on the second rotating surface, the second color layer is arranged on one side of the magnetic layer far away from the body part, and the second color layer has a second color; when the decorative film is in a second magnetic field, the second color layer faces the first surface so that the first surface side of the decorative film exposes a second pattern.

7. The decorative film according to claim 5, wherein when the first color layer is disposed on a side of the magnetic layer remote from the body portion, the color change element further comprises an adhesion layer disposed between the magnetic layer and the first color layer for improving adhesion of the first color layer on the magnetic layer, wherein the adhesion layer has a thickness of 20nm to 60nm, and the adhesion layer comprises Cr.

8. The decorative film of claim 6 wherein said first color layer and said second color layer are both optical coating layers, said optical coating layers comprising In, sn, tiO ₂ 、Ti ₃ O ₅ 、NbO ₂ 、Nb ₂ O ₃ 、Nb ₂ O ₂ 、Nb ₂ O ₅ 、SiO ₂ 、ZrO ₂ One or more of the following.

9. The decorative film of claim 2 wherein said carrier layer further has a second surface disposed opposite said first surface; the decorative film further comprises:

a first electromagnetic layer disposed on a first surface of the carrier layer, the first electromagnetic layer for loading a first electrical signal;

a second electromagnetic layer disposed on a second surface of the carrier layer, the second electromagnetic layer configured to load a second electrical signal, the first electrical signal and the second electrical signal cooperating to generate the first magnetic field or the second magnetic field; and

The shielding layer is arranged on the surface, far away from the color-changing layer, of the second electromagnetic layer.

10. The decorative film of claim 9 wherein said first electromagnetic layer is optically transparent, said first electromagnetic layer comprising one or more of indium tin oxide, nano silver; the second electromagnetic layer comprises one or more of indium tin oxide, nano silver, copper, aluminum, tin and gold.

11. The decorative film according to any one of claims 1 to 10, wherein the equivalent sphere diameter of the accommodation cavity is 1.1 to 1.3 times the equivalent sphere diameter of the color change element, which is 1 to 100 μm.

12. The decorative film of any one of claims 1-10 wherein said color shifting layer further comprises a lubricant disposed within said receiving cavity.

13. A method of making a decorative film, the method comprising:

arranging a plurality of color-changing elements in the plurality of first grooves of the first sub-bearing layer, arranging the second sub-bearing layer on the surface of the first sub-bearing layer with the first grooves in an inverted mode, enabling the first grooves to correspond to the second grooves one by one, and enabling each first groove and one second groove to be arranged in opposite directions to form a containing cavity in an enclosing mode so as to obtain the color-changing layer; wherein the color-changing elements have color and magnetism and can freely rotate in the accommodating cavity, and at least part of the color-changing elements have a first color; the surface of the first sub-bearing layer far away from the second sub-bearing layer is a first surface, when the decorative film is in a first magnetic field, the first colors of the plurality of color-changing elements face the first surface, and the plurality of color-changing elements are matched to enable the first surface side of the decorative film to expose a first pattern.

14. The method of making a decorative film according to claim 13, wherein the plurality of color shifting elements comprises a plurality of first color shifting elements, a plurality of second color shifting elements, and a plurality of third color shifting elements, the first color shifting element portion having a red color, the second color shifting element portion having a green color, the third color shifting element portion having a blue color, the method further comprising, prior to disposing the plurality of color shifting elements within the plurality of first grooves of the first sub-carrier layer:

splitting the first pattern into multiple pixel points, and arranging the first color-changing elements, the second color-changing elements and the third color-changing elements according to a preset rule according to the color of each pixel point so as to enable the first pattern to be a preset pattern.

15. The method of manufacturing a decorative film according to claim 13, wherein the method of manufacturing a plurality of color-changing elements comprises:

providing a body part, wherein the body part is provided with a first rotating surface and a second rotating surface;

plating a magnetic layer on the first rotating surface;

plating an adhesion layer on the magnetic layer; and

and plating a first color layer on the surface of the adhesion layer far away from the body part, or plating a first color layer on the second rotating surface.

16. The method of manufacturing a decorative film according to claim 15, wherein the method of manufacturing a plurality of color-changing elements further comprises:

plating a second color layer on the second rotating surface when the first color layer is arranged on the surface of the adhesion layer far away from the body part;

when the first color layer is arranged on the second rotating surface, a second color layer is plated on the surface, far away from the body, of the adhesion layer.

17. A housing, comprising:

a housing body; and

the decorative film of any one of claims 1-12, disposed on a surface of the housing body.

18. An electronic device, comprising:

a display assembly;

the housing of claim 17, the housing having a receiving space, the housing for carrying the display assembly; and

19. The electronic device of claim 18, wherein the circuit board assembly includes a processor electrically connected to the display assembly for controlling the display assembly to display; the processor is also used for controlling the generation of a first magnetic field so that the plurality of color-changing elements cooperate to expose a first pattern on the first surface side of the decorative film.