CN110933204A

CN110933204A - Decoration, cover plate assembly and electronic equipment

Info

Publication number: CN110933204A
Application number: CN201911154982.9A
Authority: CN
Inventors: 杨鑫
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-03-27

Abstract

The application provides a decoration, which comprises a first base layer, a first conducting layer, a color changing layer, a second conducting layer and a second base layer which are sequentially stacked from bottom to top; the color-changing layer comprises a partition wall, and the partition wall, the first conducting layer and the second conducting layer are arranged in an enclosing mode to form a plurality of micro-cup cavities; and the micro-cup cavity is filled with a photonic crystal material so as to realize color change under the action of the first conducting layer and the second conducting layer. The decoration that this application embodiment provided is through the photonic crystal material who contains photonic crystal nanometer microballon of filling in the discoloration layer to show different colours under the effect of first conducting layer and second conducting layer. Meanwhile, the photonic crystal materials are respectively filled in the micro-cup cavities through the partition walls, so that the problems that the packaging difficulty is high due to the large area of the decorating part, and the agglomeration and the coagulation of the photonic crystal nano microspheres are easy to happen are solved.

Description

Decoration, cover plate assembly and electronic equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to a decorating part, a cover plate assembly and electronic equipment.

Background

With the personalized development of electronic devices (such as mobile phones, tablet computers, notebook computers, wearable devices, etc.), consumers have made higher demands on the aesthetic appearance of the electronic devices. For example, the color of the cover plate for the electronic device no longer satisfies a single color.

At present, in electronic devices such as mobile phones, decoration parts are generally formed on a cover plate through processes such as vapor deposition coating or sputtering coating, and light waves interfere at a film interface through coating, so that reflection of light waves with specific colors is enhanced, and further specific colors are displayed.

However, the colors or patterns of the decorations formed by the plating films are relatively fixed, so that various color changing effects cannot be realized, and the appearance expressive force is not ideal.

Disclosure of Invention

The embodiment of the application provides a decoration part, which comprises a first base layer, a first conducting layer, a color changing layer, a second conducting layer and a second base layer, wherein the first base layer, the first conducting layer, the color changing layer, the second conducting layer and the second base layer are sequentially stacked from bottom to top; the color-changing layer comprises a partition wall, and the partition wall, the first conducting layer and the second conducting layer are arranged in an enclosing mode to form a plurality of micro-cup cavities; and the micro-cup cavity is filled with a photonic crystal material so as to realize color change under the action of the first conducting layer and the second conducting layer.

The embodiment of the application also provides a cover plate assembly, which comprises a cover plate and a decorative part, wherein the decorative part is attached to the cover plate, and comprises the decorative part in the embodiment.

The embodiment of the application further provides an electronic device, which comprises a display screen assembly and a cover plate assembly, wherein the cover plate assembly is the cover plate assembly in the embodiment, the display screen assembly and the cover plate assembly are enclosed to form an accommodating space, and the accommodating space is used for accommodating components of the electronic device.

The decoration that this application embodiment provided is through the photonic crystal material who contains photonic crystal nanometer microballon of packing in the discoloration layer to show different colours under the effect of first conducting layer and second conducting layer, and then make discoloration layer realize the transform between continuously adjustable, the multiple colour. Meanwhile, the photonic crystal materials are respectively filled in the micro-cup cavities through the partition walls, so that the problems that large-area packaging difficulty is high due to large area of the decorating part, agglomeration and coagulation easily occur to the photonic crystal nano-microspheres and the like can be effectively avoided.

The apron subassembly that this application embodiment provided, through attached decoration on the apron, utilize the range between the electric field control photonic crystal nanometer microballon, the apron subassembly that changes between continuous adjustable, the multiple colour under the control of realization multiple electric field promotes the outward appearance aesthetic feeling of apron subassembly and user's use experience.

The electronic equipment provided by the embodiment of the application breaks through the defects that the color or the pattern of the traditional cover plate assembly is relatively fixed and the appearance expressive force cannot be ideally changed. The photonic crystal material is used, the arrangement of the photonic crystal nano microspheres is controlled and regulated through the electric field, the continuously adjustable cover plate component with various colors under the control of the electric field is realized, and the appearance expressive force of the electronic equipment and the use experience of a user are further improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic illustration of the construction of a trim piece according to some embodiments of the present application;

FIG. 2 is a schematic diagram of the structure of a microcup chamber in some embodiments of the present application;

FIG. 3 is a schematic view of a portion of the structure of the partition wall projected on the first conductive layer along a direction perpendicular to the first conductive layer in some embodiments of the present application;

FIG. 4 is a schematic view of a portion of a partition wall projected on a first conductive layer along a direction perpendicular to the first conductive layer according to another embodiment of the present application;

FIG. 5 is a schematic view of the structure of a partition wall in other embodiments of the present application;

FIG. 6 is a schematic view of a decorative element according to further embodiments of the present application;

FIG. 7 is a schematic illustration of the spatial gaps between nanospheres in some embodiments of the present application;

FIG. 8 is a schematic illustration of the spatial gaps between nanospheres in some embodiments of the present application;

FIG. 9 is a schematic illustration of the spatial gaps between nanospheres in some embodiments of the present application;

FIG. 10 is a schematic illustration of the spatial gaps between nanospheres in some embodiments of the present application;

FIG. 11 is a schematic illustration of the construction of a cover plate assembly according to some embodiments of the present application;

FIG. 12 is a schematic diagram of an electronic device in some embodiments of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

It should be noted that the electronic device in the embodiment of the present application is mainly directed to an electronic device in which a cover plate of the electronic device has a decoration structure. The applicant finds in research that the decorative part can be made to show different colors, so that the electronic device has strong appearance expressive force, and the use experience of a user is improved. The electronic device in the application can include a mobile phone, a tablet computer, a notebook computer, a wearable device and other electronic devices with decoration structures.

Based on this, the applicant proposes to fill photonic crystals in the decoration, and drive the rearrangement of the photonic crystals through an electric field, thereby realizing display effects of different colors.

It is understood that the photonic crystal is formed by the periodic arrangement of media with different refractive indexes, and light is diffracted and refracted in the periodic structure of the photonic crystal material, so that light with certain wavelengths cannot pass through the periodic structure, and light with specific wavelengths is reflected, so that specific colors can be generated. For example, the color of the wings of butterflies and some insects are the color of photonic crystals.

Further, the artificial photonic crystals are generally synthesized by a chemical method into nanoparticles having a uniform size of about 100nm, such as silica (SiO2) spheres, Polystyrene (PS) spheres, and the like. Through a special film forming method, the nano microspheres are coated on the base material and are closely arranged on the base material, so that the photonic crystal with a specific color can be formed. Wherein the nano-microspheres are referred to as the discontinuous phase of the photonic crystals and the gaps between the nano-microspheres are referred to as the continuous phase of the photonic crystals. The gaps between the microspheres can be air or filled with other materials with different refractive indexes with the microspheres.

Specifically, the cavity of the decoration is filled with liquid containing photonic crystal nano microspheres, and the photonic crystal nano microspheres are driven to rearrange under the action of an electric field, so that the display effect of different colors can be realized. However, the applicant has also found in the research that when the liquid containing the photonic crystal nano-microspheres is poured into the decoration, if the decoration area is large, the packaging difficulty of the liquid in a large area is large, and the problems of agglomeration and coagulation of the photonic crystal nano-microspheres also exist.

In order to solve the above problem, an embodiment of the present application provides a decoration, which includes a first base layer, a first conductive layer, a color-changing layer, a second conductive layer, and a second base layer, which are sequentially stacked from bottom to top. The color-changing layer comprises a partition wall, and the partition wall, the first conducting layer and the second conducting layer are arranged in an enclosing mode to form a plurality of micro-cup cavities. The micro-cup cavity is filled with a photonic crystal material to realize color change under the action of the first conducting layer and the second conducting layer.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present application are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

Specifically, referring to fig. 1, fig. 1 is a schematic structural diagram of a decoration 10 according to some embodiments of the present application, where the decoration 10 generally includes a first substrate 11, a first conductive layer 12, a color-changing layer 13, a second conductive layer 14, and a second substrate 15, which are stacked in sequence from bottom to top. In other words, the color-changing layer 13 is disposed between the first base layer 11 and the second base layer 15, the first conductive layer 12 is disposed between the first base layer 11 and the color-changing layer 13, and the second conductive layer 14 is disposed between the second base layer 15 and the color-changing layer 13.

It is understood that the color changing layer 13 is filled with a liquid containing photonic crystal nano-microspheres, i.e. a photonic crystal material or a photonic crystal electrophoretic liquid. The photonic crystal material contains photonic crystal nano-microspheres which are arranged in different modes under the action of different electric fields of the first conductive layer 12 and the second conductive layer 14 so as to display different colors, and further the color changing layer 13 can realize continuous adjustment and conversion among multiple colors under the control of multiple electric fields.

Further, referring to fig. 2, fig. 2 is a schematic structural diagram of a micro-cup cavity according to some embodiments of the present application, in which the color-changing layer 13 substantially includes partition walls 131 and a photonic crystal material filled between the partition walls 131. The partition walls 131, the first conductive layer 12 and the second conductive layer 14 are enclosed to form a plurality of micro-cup chambers 132, and the micro-cup chambers 132 are filled with photonic crystal materials to realize color change under the action of the electric fields of the first conductive layer 12 and the second conductive layer 14.

Specifically, the photonic crystal material in the embodiment of the present application includes photonic crystal nano-microspheres and a solvent, and the mass fraction of the photonic crystal nano-microspheres in the photonic crystal material is approximately 0.1% to 20%. The photonic crystal nano microspheres are uniformly distributed in a solvent to form a photonic crystal material, wherein the photonic crystal nano microspheres are nano microspheres with uniform size between 50nm and 500 nm. Photonic crystal nanospheres include, but are not limited to, Silica (SiO)₂) Polystyrene (PS), silica-coated zinc sulfide (ZnS @ SiO)₂) Silica-coated ferroferric oxide (Fe)₃O₄@SiO₂) At least one of the nano microspheres. The solvent includes but is not limited to at least one of water, ethanol, acetonitrile, diethyl ether, acetone, ethyl acetate, propylene carbonate, methyl pyrrolidone, ethylene glycol butyl ether and the like.

Further, the solvent is preferably at least one of solvents having a high boiling point and being less volatile, such as propylene carbonate, methyl pyrrolidone, and ethylene glycol butyl ether. The higher boiling point and the less volatile property ensure the stability of the photonic crystal material especially at higher temperature.

The decoration 10 that this application embodiment provided, through the liquid that contains the photonic crystal nanometer microballon in the packing in discoloration layer 13, the photonic crystal nanometer microballon is different mode and arranges under the effect of the different electric fields of first conducting layer 12 and second conducting layer 14 to show different colours, and then make discoloration layer 13 realize the transform between continuous adjustable, the multiple colour under the control of multiple electric field. Meanwhile, the photonic crystal material is filled in the micro-cup chambers 132 through the partition walls 131, so that the problems that the large area of liquid encapsulation difficulty caused by the large area of the decorating part is high, agglomeration and coagulation easily occur to the photonic crystal nano-microspheres and the like can be effectively avoided.

In some embodiments of the present application, please refer to fig. 3, in which fig. 3 is a schematic view of a portion of the structure of the partition wall 131 projected on the first conductive layer 12 along a direction perpendicular to the first conductive layer 12, and the partition walls 131 are continuously arranged at intervals along a direction parallel to the extending direction of the first conductive layer 12. The partition walls 131, which are arranged in series at intervals, surround the first conductive layer 12 and the second conductive layer 14 to form a plurality of microcup chambers 132.

In some other embodiments of the present application, please refer to fig. 4, fig. 4 is a schematic view of a partial structure of the partition wall 131 projected on the first conductive layer 12 along a direction perpendicular to the first conductive layer 12, in which the partition wall 131 substantially includes first sub-walls 1311 and second sub-walls 1312 arranged in a crossing manner, the first sub-walls 1311 are arranged at intervals in the first direction, and the second sub-walls 1312 are arranged at intervals in the second direction.

It should be noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature.

Specifically, the first direction and the second direction are substantially parallel to the extending direction of the first conductive layer 12, and the first direction is different from the second direction. For example, the first direction may be substantially parallel to the extending direction of the relatively longer side of the first conductive layer 12, and the second direction may be substantially parallel to the extending direction of the relatively shorter side of the first conductive layer 12. It is understood that the first sub-wall 1311, the second sub-wall 1312, the first conductive layer 12 and the second conductive layer 14 enclose a plurality of micro-cup chambers 132. The projection of the first sub-wall 1311 in the direction perpendicular to the first conductive layer 12 may be perpendicular to the projection of the second sub-wall 1312 in the direction perpendicular to the first conductive layer 12, and in this case, the microcup chamber 132 has a substantially three-dimensional structure. Generally, the height of the micro-cup chamber 132 along the direction perpendicular to the first conductive layer 12 is about 10 to 40 μm, and the dimension of the micro-cup chamber 132 along the relatively longer side and the relatively shorter side along the direction parallel to the first conductive layer 12 is about 50 to 500 μm, i.e. the length and width dimension of the micro-cup chamber 132 along the direction parallel to the first conductive layer 12 is about 50 to 500 μm.

In the embodiment of the present application, the height of the microcup chamber 132 in the direction perpendicular to the first conductive layer 12 is approximately 20 μm, the dimension of the microcup chamber 132 in the direction parallel to the first conductive layer 12 along the relatively longer side is approximately 180 μm, and the dimension of the relatively shorter side is approximately 120 μm. By adopting the microcup cavity 132 with the size to match with the nano microspheres with the uniform size between 50nm and 500nm, the problems of easy agglomeration, coagulation and the like of the photonic crystal nano microspheres can be avoided.

Further, it should be understood that the use of the term "substantially" herein in terms of a numerical quantity or other quantifiable relationship (e.g., perpendicularity or parallelism) is to be understood as indicating a quantity of ± 10%, unless otherwise defined with respect to a particular context. Thus, for example, lines that are substantially perpendicular to each other may be at an angle of between 81 ° and 99 ° to each other.

Of course, in other embodiments, the projection of the first sub-wall 1311 in the direction perpendicular to the first conductive layer 12 may not be perpendicular to the projection of the second sub-wall 1312 in the direction perpendicular to the first conductive layer 12, and in this case, the projection of the microcup chamber 132 in the direction perpendicular to the first conductive layer 12 is a quadrangle.

It is understood that in other embodiments, the projections of the first sub-wall 1311 and the second sub-wall 1312 in a direction perpendicular to the first conductive layer 12 may be straight lines or curved lines.

In other embodiments of the present application, please refer to fig. 5, fig. 5 is a schematic structural diagram of the partition wall 131 in other embodiments of the present application, and the partition wall 131 further includes a third sub-wall 1313. Specifically, the third sub-wall 1313 is disposed on the surface of the first conductive layer 12 adjacent to the isolation wall 131, and the third sub-wall 1313 is used to isolate the photonic crystal material from contacting the first conductive layer 12, so as to prevent the photonic crystal material from directly contacting the first conductive layer 12 and affecting the stability of the product.

In other embodiments of the present application, referring to FIG. 6, FIG. 6 is a schematic view of a decorative element 10 of other embodiments of the present application, where the decorative element 10 further includes a sealing layer 16. The sealing layer 16 is disposed between the discoloring layer 13 and the second conductive layer 14, and the sealing layer 16 is used for sealing the microcup cavity 132 to prevent the photonic crystal material from directly contacting the second conductive layer 14 to affect the stability of the product.

Further, the material density of the sealing layer 16 is less than that of the photonic crystal material, and the material of the sealing layer 16 is immiscible with the photonic crystal material.

The decoration that this application embodiment provided carries out the subregion through a plurality of little cup chambeies and seals to the photonic crystal material, avoids the stability that the first conducting layer of photonic crystal material direct contact and second conducting layer influence the product, and can avoid the photonic crystal nanometer microballon to take place to reunite and gather and sink etc..

In some embodiments, the microcup chamber is made by nanoimprinting using a transparent glue. It should be noted that the nanoimprint technology is a technology for transferring a micro-nano structure on a template to a material to be processed by assistance of photoresist.

It can be understood that the nano-imprinting technique can simply imprint the shape of the micro-cup cavity. Nanoimprint technology can generally be divided into three steps: template processing, pattern transfer, and substrate processing. The template processing uses electron beam etching or other means to process the desired structure on a silicon or other substrate as a template. The pattern transfer is to coat the surface of the material to be processed with photoresist, press the template on the surface, and transfer the pattern onto the photoresist by means of pressurization. The substrate processing is to solidify the photoresist by using ultraviolet light, etch the photoresist which is not completely removed in the previous step by using etching liquid after the template is removed to expose the surface of the material to be processed, then process by using a chemical etching method, remove all the photoresist after the processing is finished, and finally obtain the material processed with high precision.

Of course, in other embodiments, the micro-cup chamber can be made of transparent material by exposure, development, etc. For example, a silicon or other substrate is coated with a photoresist, the photoresist is exposed through a mask, and then the photoresist is developed to obtain a desired microcup cavity.

Furthermore, the thickness of the partition wall forming the micro-cup cavity is 0.1-10 μm, and the photonic crystal material is divided into independent small areas, namely the micro-cup cavity, through the partition wall, so that the stability of the small areas is relatively better on one hand, and on the other hand, even if one small area is agglomerated, the whole other areas are not affected. And the partition wall with the thickness of 0.1-10 mu m ensures that the single micro-cup chamber occupies a small space, and has little influence on the whole display or color change effect.

In some embodiments of the present application, the first substrate 11, the second substrate 15, the first conductive layer 12, and the second conductive layer 14 may be made of transparent materials so that the appearance of the decoration is sufficiently ideal.

Specifically, the transparent material used for the first base layer 11 and the second base layer 15 includes, but is not limited to, one or more of polyethylene terephthalate (PET), Polyimide (PI), polymethyl methacrylate (PMMA), Polystyrene (PS), and Polycarbonate (PC).

Of course, in some other embodiments, the first substrate 11 and the second substrate 15 may be made of glass in application scenarios where the trim piece is not required to be flexible.

Further, the transparent material used for the first conductive layer 12 and the second conductive layer 14 includes, but is not limited to, one or more of indium tin oxide, fluorine-doped tin oxide, or aluminum-doped zinc oxide, or organic polymer conductive material. The organic polymer material may be poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonate (PEDOT: PSS), for example.

Of course, the first conductive layer 12 and the second conductive layer 14 are preferably made of indium tin oxide in the embodiment of the present application because indium tin oxide is relatively excellent in optical and electrical properties.

It is understood that the first conductive layer 12 and the second conductive layer 14 can be electrically connected with an external control circuit by a flexible circuit board, a rigid circuit board, etc., and the color changing layer 13 of the decoration is controlled to change color under the control of a voltage electric field by applying a voltage between the first conductive layer 12 and the second conductive layer 14.

Specifically, a direct current voltage of 0V to 15V may be applied between the first conductive layer 12 and the second conductive layer 14. When no voltage is applied, the color-changing layer 13 of the decoration shows a specific color according to the type, the grain diameter, the concentration and the solvent of the nano microspheres in the photonic crystal material. When voltage is applied, the nano microspheres are rearranged under the action of an electric field. The space gap between the photonic crystal nano microspheres is changed, so that the wavelength of light reflected by the photonic crystal is changed, namely, the color is changed.

For example, referring to fig. 7-10, schematic diagrams of the change of the spatial gap between the photonic crystal nanospheres at different voltages are shown. Wherein the applied voltage in FIG. 7 is 0V, the applied voltage in FIG. 8 is 0.1-5V, the applied voltage in FIG. 9 is 2-10V, and the applied voltage in FIG. 10 is 6-15V.

When the applied voltage is 0.5V, the reflected light obtained in the direction perpendicular to the first conductive layer 12 and the second conductive layer 14 is red light; when the applied voltage is 0.8V, the reflected light obtained in the direction perpendicular to the first conductive layer 12 and the second conductive layer 14 is green light; when the applied voltage is 2.4V, the reflected light obtained in the direction perpendicular to the first conductive layer 12 and the second conductive layer 14 is blue light. Therefore, light which continuously changes from red to blue can be obtained by applying voltage in the range of 0.1-15V, and the color changing layer 13 of the decoration can realize continuous adjustment and change among multiple colors.

Further, in some embodiments of the present application, the peripheries of the first base layer 11, the first conductive layer 12, the color changing layer 13, the second conductive layer 14, and the second base layer 15, which are sequentially stacked from bottom to top, are integrally encapsulated by a sealant to obtain the decoration 10. It can be understood that the decoration 10 is integrally packaged by the sealant, so as to facilitate the assembly of the decoration.

The decoration that this application embodiment provided through encapsulating the photonic crystal material in little cup cavity, has solved the difficult problem of large tracts of land liquid encapsulation on the one hand, and a plurality of solitary locuses are cut apart into with the photonic crystal material to the little cup cavity of on the other hand, have avoided easy reunion and the settlement problem that takes place of photonic crystal nanometer microballon in the preservation process.

Referring to fig. 11, fig. 11 is a schematic structural view of a cover plate assembly 100 provided in the embodiment of the present application, where the cover plate assembly 100 includes a cover plate 20 and a decoration 10, and the decoration 10 is attached to the cover plate 20. It is understood that the decoration 10 in the present embodiment is the decoration 10 in the previous embodiment, and therefore the specific structure of the decoration 10 in the present embodiment is not described in further detail.

In the embodiment of the present application, the decoration 10 may be attached to the cover plate 20 by Optical Clear Adhesive (OCA). The types of optical glues are within the understanding of those skilled in the art and are not listed here. Of course, in other embodiments, the decoration 10 can be fixedly connected to the cover plate 20 by other means, such as double-sided adhesive bonding, clamping, etc.

The apron subassembly 100 that this application embodiment provided, through attached decoration 10 on apron 20, utilize the photonic crystal material, through the range between the electric field control photonic crystal nanometer microballon, realize under the control of multiple electric field continuously adjustable, the apron subassembly 100 that changes between the multiple colour, promote the outward appearance aesthetic feeling of apron subassembly 100 and user's use experience.

Referring to fig. 12, fig. 12 is a schematic structural diagram of the electronic device 1000 according to an embodiment of the present disclosure, where the electronic device 1000 includes a display screen assembly 200 and a cover plate assembly 100, the display screen assembly 200 and the cover plate assembly 100 are enclosed to form an accommodating space 300, and the accommodating space 300 is used for accommodating components of the electronic device 1000. It is understood that the cover plate assembly 100 in the embodiment of the present application is the cover plate assembly 100 in the previous embodiment, and therefore, the detailed structure of the cover plate assembly 100 in the embodiment of the present application is not further described.

The electronic device 1000 provided by the embodiment of the application breaks through the disadvantages that the color or pattern of the conventional cover plate assembly 100 is relatively fixed and the appearance expressive force cannot be changed ideally. By using the photonic crystal material and controlling the arrangement of the photonic crystal nano microspheres through electric field control, the cover plate assembly 100 with continuously adjustable and various colors under the electric field control is realized, and the appearance expressive force of the electronic device 1000 and the use experience of a user are further improved.

It is noted that the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A decorative element, comprising: the first base layer, the first conducting layer, the color changing layer, the second conducting layer and the second base layer are sequentially stacked from bottom to top;

the color-changing layer comprises a partition wall, and the partition wall, the first conducting layer and the second conducting layer are arranged in an enclosing mode to form a plurality of micro-cup cavities; and the micro-cup cavity is filled with a photonic crystal material so as to realize color change under the action of the first conducting layer and the second conducting layer.

2. A decorative item according to claim 1 wherein the barrier walls are arranged in spaced succession along a direction parallel to the extent of the first conductive layer.

3. A decorative item according to claim 1 wherein the dividing wall comprises first and second intersecting sub-walls, the first sub-walls being arranged in spaced succession along the first direction and the second sub-walls being arranged in spaced succession along the second direction.

4. A decorative item according to claim 2 or 3 wherein the dividing wall further comprises a third sub-wall, the third sub-wall being provided on a surface of the first conductive layer adjacent the dividing wall, the third sub-wall serving to isolate the photonic crystal material from contacting the first conductive layer.

5. A decorative piece according to claim 4, further comprising a sealing layer disposed between the colour-altering layer and the second electrically conductive layer, the sealing layer being for sealing the microcup cavity.

6. A decorative item according to claim 1 wherein the microcup chamber is formed from a clear gel by nanoimprint or exposure development.

7. A decorative item according to claim 1 wherein the thickness of the barrier wall is from 0.1 to 10 μm.

8. A decorative item according to claim 1 wherein the height of the microcup cavity in a direction perpendicular to the first conductive layer is from 10 to 40 μm and the length and width of the microcup cavity in a direction parallel to the first conductive layer are both from 50 to 500 μm.

9. A decorative item according to claim 1 wherein the photonic crystal material comprises photonic crystal nanovesicles and a solvent, the photonic crystal nanovesicles being present in the photonic crystal material in an amount of from 0.1% to 20% by mass.

10. A decorative item according to claim 9 wherein the photonic crystal nanospheres are uniformly sized nanospheres having a size between 50nm and 500 nm.

11. A decorative item according to claim 9 wherein the photonic crystal nanospheres comprise at least one of silica, polystyrene, silica-coated zinc sulfide, silica-coated ferroferric oxide nanospheres.

12. A decorative item according to claim 9 wherein the solvent comprises at least one of water, ethanol, acetonitrile, diethyl ether, acetone, ethyl acetate, propylene carbonate, methyl pyrrolidone, ethylene glycol butyl ether.

13. A decorative item according to claim 1 wherein the first substrate, the second substrate, the first conductive layer and the second conductive layer are all made of a transparent material.

14. A decorative item according to claim 13 wherein the transparent material used for the first and second substrate layers comprises one or more of polyethylene terephthalate, polyimide, polymethylmethacrylate, polystyrene, polycarbonate; the transparent materials adopted by the first conducting layer and the second conducting layer comprise one or more of indium tin oxide, fluorine-doped tin oxide or aluminum-doped zinc oxide or organic polymer conducting materials.

15. A decorative piece according to claim 1, wherein the peripheries of the first base layer, the first conductive layer, the color changing layer, the second conductive layer and the second base layer which are sequentially stacked from bottom to top are integrally encapsulated by frame glue.

16. A cover panel assembly comprising a cover panel and a decorative element attached to the cover panel, the decorative element comprising the decorative element of any one of claims 1 to 15.

17. An electronic device, comprising a display screen assembly and a cover plate assembly, wherein the cover plate assembly is the cover plate assembly of claim 16, the display screen assembly and the cover plate assembly enclose a receiving space, and the receiving space is used for receiving components of the electronic device.