阅读说明：本技术 盖板组件及电子设备 (Cover plate assembly and electronic equipment ) 是由 刘媛 张敏 于 2021-01-22 设计创作，主要内容包括：本申请公开了一种盖板组件及电子设备,盖板组件包括依次层叠设置的基板、第一导电膜、电致变色器件和有色金属导电膜,其中,基板为透明元件；第一导电膜为透明导电薄膜；外接电源与第一导电膜和有色金属导电膜电连接,且第一导电膜、电致变色器件和有色金属导电膜之间形成有电流回路,电致变色器件在着色状态和褪色状态之间可切换,在电流回路导通的情况下,电致变色器件处于着色状态；在电流回路断开的情况下,电致变色器件处于褪色状态。本申请通过利用一层有色金属导电膜代替了现有技术中的ITO导电膜、菲林膜和油墨材料三层结构膜,减少了盖板组件的制造工艺和制造成本,减薄了盖板组件的整体厚度,进一步提升了电致变色器件的变色速率。(The application discloses a cover plate assembly and electronic equipment, wherein the cover plate assembly comprises a substrate, a first conductive film, an electrochromic device and a non-ferrous metal conductive film which are sequentially stacked, wherein the substrate is a transparent element; the first conductive film is a transparent conductive film; the external power supply is electrically connected with the first conductive film and the nonferrous metal conductive film, a current loop is formed among the first conductive film, the electrochromic device and the nonferrous metal conductive film, the electrochromic device is switchable between a coloring state and a fading state, and the electrochromic device is in the coloring state under the condition that the current loop is switched on; with the current loop open, the electrochromic device is in a faded state. This application has replaced ITO conductive film, film and printing ink material three layer construction membrane among the prior art through utilizing one deck non ferrous metal conductive film, has reduced the manufacturing process and the manufacturing cost of apron subassembly, has attenuate the whole thickness of apron subassembly, has further promoted electrochromic device's rate of discolouing.)

1. A cover plate assembly comprising a substrate, a first conductive film, an electrochromic device, and a non-ferrous conductive film, which are sequentially stacked, wherein,

the substrate is a transparent element;

the first conductive film is a transparent conductive film;

one end of an external power supply is electrically connected with the first conductive film, the other end of the external power supply is electrically connected with the non-ferrous metal conductive film, a current loop is formed among the first conductive film, the electrochromic device and the non-ferrous metal conductive film, the electrochromic device is switchable between a coloring state and a fading state, and under the condition that the current loop is switched on, the electrochromic device is in the coloring state, and the electrochromic device is colored; and under the condition that the current loop is disconnected, the electrochromic device is in the fading state, and the electrochromic device is transparent.

2. The cover plate assembly of claim 1, further comprising: the first supporting piece is arranged between the substrate and the first conductive film, and the first conductive film is evaporated on the first supporting piece.

3. The cover plate assembly of claim 2, wherein the base plate and the first support member are adhesively connected by an optically clear adhesive.

4. The cover plate assembly of claim 2, further comprising: the non-ferrous metal conductive film is evaporated on the second support, and the non-ferrous metal conductive film is positioned between the electrochromic device and the second support.

5. The decking assembly defined in claim 2 wherein the first and second supports are each a piece of PET resin material.

6. The cover plate assembly of claim 1, wherein the substrate is a glass backplane.

7. The cover assembly of claim 1, wherein the first conductive film is an indium tin oxide film.

8. The cover plate assembly of claim 1, wherein the non-ferrous conductive film is a non-ferrous alloy film.

9. An electronic device comprising the cover assembly of any one of claims 1-8.

Technical Field

The application belongs to the technical field of electronic product manufacturing, and particularly relates to a cover plate assembly and an electronic device with the same.

Background

At present, the mobile phone rear cover with variable colors can bring a flamboyance feeling and a cool feeling to a user, so that the aesthetic requirements of the user are met, and the purchasing desire of the user is improved.

The design principle of the mobile phone rear cover with variable colors mostly adopts the principle of electrochromism. However, the structural design of the electrochromic device is complex, the working procedures are increased greatly after the electrochromic device is combined with the glass rear cover process, the manufacturing process is complex, and the cost is high. Meanwhile, the thickness of the rear glass cover is increased due to the increase of the processes, which is different from the trend of the mobile phone towards the light and thin direction.

Disclosure of Invention

The embodiment of the application aims to provide a cover plate assembly and electronic equipment, and the problems that in the prior art, a color-changeable mobile phone rear cover is complex in manufacturing process, high in cost and thick in size can be solved.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a cover plate assembly, including a substrate, a first conductive film, an electrochromic device, and a non-ferrous metal conductive film, which are sequentially stacked, where the substrate is a transparent element; the first conductive film is a transparent conductive film; one end of an external power supply is electrically connected with the first conductive film, the other end of the external power supply is electrically connected with the non-ferrous metal conductive film, a current loop is formed among the first conductive film, the electrochromic device and the non-ferrous metal conductive film, the electrochromic device is switchable between a coloring state and a fading state, and under the condition that the current loop is switched on, the electrochromic device is in the coloring state, and the electrochromic device is colored; and under the condition that the current loop is disconnected, the electrochromic device is in the fading state, and the electrochromic device is transparent.

In a second aspect, the present application provides an electronic device comprising the cover plate assembly described in the above embodiments.

In the embodiment of the application, the non-ferrous metal conductive film is used for replacing an ITO conductive film, a film and an ink material three-layer structure film in the prior art, so that the manufacturing process and the manufacturing cost of the cover plate component are effectively reduced, the overall thickness of the cover plate component is reduced, and the design trend of lightness and thinness of electronic equipment is met. In addition, the apron subassembly of this application not only can reach the same effect of discolouing at the attenuate structure under reduce cost's the prerequisite, can also further promote electrochromic device's the rate of discolouing through adopting the non ferrous metal conducting film, effectively promotes the whole device performance of apron subassembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a structure of a mobile phone rear cover with changeable colors in the prior art;

FIG. 2 is a schematic diagram of the operation of an electrochromic device according to an embodiment of the invention;

FIG. 3 is a schematic structural diagram of a cover plate assembly according to an embodiment of the present invention;

FIG. 4 is a light ray diagram of an electrochromic device of a cover assembly in a faded state according to an embodiment of the present invention;

FIG. 5 is a light ray diagram of an electrochromic device of a cover assembly in a colored state according to an embodiment of the invention;

fig. 6 is a rear view of an electronic device according to an embodiment of the present invention.

Reference numerals:

a cover plate assembly 100;

a substrate 10;

a first conductive film 20;

an electrochromic device 30;

a non-ferrous metal conductive film 40;

a first support 51; a second support 52;

an optically clear adhesive 60;

an electronic device 200;

a rear camera 201;

and a fill-in lamp 202.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present application is an invention made by the inventors based on the following facts.

As shown in fig. 1, in the prior art, the electrochromic device 5 is usually integrated with the rear cover of the mobile phone after being packaged, and as shown in fig. 1, the rear cover of the electrochromic mobile phone is mainly formed by sequentially stacking a glass back plate 1, an OCA optical adhesive 2, an upper PET3, an upper ITO conductive film 4, an electrochromic device 5, a lower ITO conductive film 6, a lower PET7, a CMF film 8 and an ink material 9. The glass back plate 1 is used for protecting the back cover, the OCA (optically Clear adhesive) optical cement 2 is used for cementing a special adhesive of a transparent element, and the OCA optical cement 2 is colorless and transparent and has the light transmittance of more than 90%. The upper PET3 and the lower PET7 (PET: Polyethylene Terephthalate) are both thermoplastic resin materials. The upper ITO (N-type oxide semiconductor-indium tin oxide) conductive film 4 is a semiconductor transparent conductive film, and is one conductive electrode of the electrochromic device 5. The electrochromic device 5 is switchable between a colored state (a state of changing color) and a faded state (a state of transparency) under the action of a voltage. The lower ITO conductive film 6 is the other conductive electrode of the electrochromic device 5. The CMF (film of film) 8 is a semi-transparent and semi-reflective film, and the ink material 9 is a fixed color of the rear cover of the mobile phone.

When the rear cover of the mobile phone with variable colors in the prior art is not applied with voltage, the electrochromic device 5 is in a transparent state, and the color of the rear cover of the mobile phone is the color presented by the ink material 9. When voltage is applied, the electrochromic device 5 presents other colors, and the color presented by the mobile phone rear cover is the color presented by the electrochromic device 5.

The color-changeable mobile phone rear cover in the prior art needs more material thin layers compounded on the glass back plate 1, so that the manufacturing process is more complicated, the cost is higher, and meanwhile, the thickness of the manufactured color-changeable mobile phone rear cover is thicker.

Based on this, the inventor of the present application has conducted long-term research and experiments to inventively obtain a cover plate assembly 100 with simple process, low cost and thin size.

The cover plate assembly 100 provided in the embodiments of the present application is described in detail with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 2 to 6, the cap plate assembly 100 according to the present invention includes a substrate 10, a first conductive film 20, an electrochromic device 30, and a non-ferrous metal conductive film 40, which are sequentially stacked.

Specifically, the substrate 10 is a transparent element, and the first conductive film 20 is a transparent conductive film. One end of the external power supply is electrically connected with the first conductive film 20, the other end of the external power supply is electrically connected with the non-ferrous metal conductive film 40, a current loop is formed among the first conductive film 20, the electrochromic device 30 and the non-ferrous metal conductive film 40, and the electrochromic device 30 can be switched between a coloring state and a fading state. When the current loop is turned on, the electrochromic device 30 is in a colored state, and the electrochromic device 30 is colored. When the current loop is opened, the electrochromic device 30 is in a discolored state, and the electrochromic device 30 is transparent.

In other words, as shown in fig. 3, the cap plate assembly 100 according to the present invention is mainly composed of the substrate 10, the first conductive film 20, the electrochromic device 30, and the nonferrous conductive film 40, which are sequentially stacked. The substrate 10 may be a transparent element, and the first conductive film 20 may be a transparent conductive film. One end of the external power source is electrically connected to the first conductive film 20, and the other end of the external power source is electrically connected to the non-ferrous metal conductive film 40. The first conductive film 20 can be used as a first conductive electrode of the electrochromic device 30, and the non-ferrous conductive film 40 is a second conductive electrode of the electrochromic device 30. A current loop may be formed between the first conductive film 20, the electrochromic device 30, and the non-ferrous conductive film 40. By changing the polarity of the voltage, the electrochromic device 30 can be stably switched between the colored state and the discolored state.

As shown in fig. 5, when a forward voltage is applied to the electrochromic device 30, a current loop formed among the first conductive film 20, the electrochromic device 30, and the non-ferrous conductive film 40 is turned on, and at this time, the electrochromic device 30 is in a colored state, the electrochromic device 30 is colored, and the cover plate assembly 100 takes on the color of the electrochromic device 30. Meanwhile, by controlling the magnitude of the current in the current loop, the color depth of the electrochromic device 30 can be effectively controlled, and a more gorgeous color of the cover plate assembly 100 is realized. As shown in fig. 4, when a reverse voltage is applied to the electrochromic device 30, a current loop formed among the first conductive film 20, the electrochromic device 30, and the non-ferrous conductive film 40 is broken, and at this time, the electrochromic device 30 is in a discolored state, the electrochromic device 30 is a transparent sheet, and the cover plate assembly 100 takes on the color of the non-ferrous conductive film 40.

In the present application, the non-ferrous metal conductive film 40 can replace the three-layer structure (lower ITO conductive film, film (CMF film) and ink material) in the prior art, so that the structure is lighter and thinner, and the manufacturing cost and the process flow are further reduced while the same color change purpose is achieved. In addition, the conductivity of the non-ferrous metal conductive film 40 is stronger than that of ITO, and the essence of the electrochromic reaction is a redox reaction, there is transfer and exchange of electrons or particles. Compared with the ITO in the prior art, the conductivity of the non-ferrous metal conductive film 40 is stronger, so that the injection of particles in the electrode into the electrochromic layer can be accelerated, and the switching rate of the electrochromic device 30 between the colored state and the faded state is further improved, so that the color change rate of the electrochromic device 30 is further improved, and the overall device performance of the cover plate assembly 100 is effectively improved.

The electrochromic principle of the electrochromic device 30 means that the optical properties (absorption rate, reflectance, transmittance, etc.) of the material are changed stably, reversibly, continuously and adjustably under the action of an applied electric field, and the material is changed in color and transparency in appearance. The electrochromic device 30 has a structure as shown in fig. 2, the electrochromic device 30 mainly comprises an upper conductive layer, a lower conductive layer, an intermediate ion storage layer, an electrolyte layer and an electrochromic layer, each layer of film can be prepared by processes such as evaporation, sputtering and sol-gel, and the thickness is between tens of nanometers and hundreds of nanometers. Generally, with a small applied voltage, a redox reaction can occur in the electrochromic device 30, and the color is changed due to the injection effect of electrons and ions. The shade of the color can be controlled by controlling the magnitude of the current. And by changing the polarity of the voltage, the electrochromic device 30 can be stably switched between a colored state (forward voltage is applied: color change) and a faded state (reverse voltage is applied: transparent state).

Electrochromic materials are generally classified into inorganic materials mainly including transition metal oxides and derivatives thereof such as tungsten trioxide (WO3), and organic materials mainly including conductive polymers such as Polyaniline (PANI), polypyrrole (PPy), and derivatives thereof. For example, organic/inorganic composite electrochromic materials (methyl viologen modified TiO) can be used in the present application₂) Two times of oxidation-reduction reactions can occur in a voltage range, and the three colors of blue, purple and transparent can be switched by controlling the voltage. Richer color changes and shorter response times are obtained by exploiting the synergistic effect of the composite material. Meanwhile, compared with thermochromism and photochromism, electrochromism switches states under the regulation and control of an electric field, and response is more sensitive.

In the following embodiments of the present application, the cover assembly 100 may be specifically described by taking as an example a mobile phone back cover designed to be variable in color, in which the electrochromic device 30 belongs to a transmissive type electrochromic. When no external voltage is applied to the electrochromic device 30, referring to fig. 4, the electrochromic device 30 does not absorb light in each wavelength band (390 to 760nm) of the visible light region, that is, all incident light passes through the electrochromic device, and has the maximum transmittance, at this time, the electrochromic device 30 is in a transparent state, and the color seen by eyes is the light reflected by the non-ferrous metal conductive film 40.

When a certain voltage is applied to the electrochromic device 30, referring to fig. 5, the electrochromic device 30 gradually changes from a discolored state to a colored state, the electrochromic device 30 absorbs part of light in a wavelength band of a visible light region, has the lowest transmittance, and reflects other colors, and at this time, the color of the mobile phone rear cover observed by human eyes is the color of the colored state of the electrochromic device 30.

Therefore, according to the cover plate assembly 100 of the embodiment of the invention, the lower ITO conductive film, the film and the ink material three-layer structure film in the prior art are replaced by the non-ferrous metal conductive film 40, so that the manufacturing process and manufacturing cost of the cover plate assembly 100 are effectively reduced, the overall thickness of the cover plate assembly 100 is reduced, and the design trend of lightness and thinness of the electronic device 200 is met.

According to one embodiment of the invention, the substrate 10 is a glass backplane. The first conductive film 20 is an indium tin oxide film. The non-ferrous metal conductive film 40 is a non-ferrous alloy film.

That is, referring to fig. 3, the substrate 10 may employ a glass backplane. The glass back plate can be used for protecting the rear cover, and has good light transmission and better texture. Meanwhile, the antenna signal of the mobile phone is not influenced by the metal back plate, so that the heat dissipation and heat conduction capacities are improved, and the overall weight of the mobile phone is further reduced. The glass back plate can be evaporated with optical films with different refractive indexes in Shanghai, so that the color of the mobile phone back cover presents transition gradient.

The first conductive film 20 may be an indium tin oxide film (ITO conductive film). An indium tin oxide film (ITO conductive film) is a semiconductor transparent conductive film, and can be used as the first conductive electrode of the electrochromic device 30. The non-ferrous metal conductive film 40 can be a non-ferrous alloy film, the non-ferrous metal conductive film 40 is a conductive film capable of showing a non-ferrous metal color, and the non-ferrous metal conductive film 40 can be used as a second conductive electrode of the electrochromic device 30. Different kinds of non-ferrous alloys can present different colors, for example, gold copper zinc alloy can present rose gold, copper alloy can present yellow, etc., and of course, the specific color selection of the non-ferrous metal conductive film 40 can be specifically set according to actual needs, and is not described in detail in this application.

In some embodiments of the present invention, the cover plate assembly 100 further comprises a first support 51.

Specifically, the first support 51 is disposed between the substrate 10 and the first conductive film 20, and the first conductive film 20 is deposited on the first support 51. The substrate 10 and the first support 51 are adhesively connected by an optically transparent adhesive 60.

In other words, referring to fig. 3, the cover plate assembly 100 may further include the first support 51. The first support 51 may be combined between the substrate 10 and the first conductive film 20, and the first support 51 may be adhered to one side of the substrate 10 (transparent back plate) by an optically transparent adhesive 60. The optically Clear adhesive 60 can be an OCA (optically Clear adhesive) which can be used as a special adhesive for gluing a transparent element, and the OCA optical adhesive is colorless and transparent and has a light transmittance of more than 90%. The first conductive film 20(ITO conductive film) may be evaporated on the first support 51, and the first support 51 may support the first conductive film 20.

According to one embodiment of the present invention, the cover plate assembly 100 further includes a second support 52,

specifically, the conductive non-ferrous metal film 40 is evaporated on the second support 52, and the conductive non-ferrous metal film 40 is located between the electrochromic device 30 and the second support 52.

That is, as shown in fig. 3, the non-ferrous metal conductive film 40 may be evaporated on the second support 52, and the side of the second support 52 where the non-ferrous metal conductive film 40 is evaporated is composited with the electrochromic device 30. Of course, the first conductive film 20 and the non-ferrous conductive film 40 can be further combined on the first support 51 and the second support 52 by other processes such as sputtering, and the principles of the evaporation process and the sputtering process are understood and can be implemented by those skilled in the art, and will not be described in detail in this application.

Alternatively, the first support 51 and the second support 52 may be made of PET resin material, respectively. The PET resin is a thermoplastic resin material, and can provide a good support for the first conductive film 20 and the non-ferrous conductive film 40.

In the present application, the electrochromic device 30 in the cover plate assembly 100 is of a transmissive type, and when the electrochromic device 30 is not applied with an external voltage, referring to fig. 4, the electrochromic device 30 does not absorb light in each wavelength band (390 to 760nm) of the visible light region, that is, the incident light passes through the entire electrochromic device, and has the maximum transmittance, at this time, the electrochromic device 30 is in a transparent state, and the color seen by eyes is the light reflected from the nonferrous metal conductive film 40. For example, the deposited nonferrous metal conductive film 40 is a copper alloy, that is, a color (yellow) of the copper alloy can be expressed

When a certain voltage is applied to the electrochromic device 30, referring to fig. 5, the electrochromic device 30 gradually changes from a discolored state to a colored state, the electrochromic device 30 absorbs part of light in a wavelength band of a visible light region, has the lowest transmittance, and reflects other colors, and at this time, the color of the mobile phone rear cover observed by human eyes is the color of the colored state of the electrochromic device 30. The cover plate assembly 100 can achieve the same color changing effect on the premise of reducing the cost due to the thinning structure, and can also shorten the response time of the color changing film (electrochromic device 30) in color fading state and color state switching by adopting the non-ferrous metal conductive film 40 as the second conductive electrode. Because the metal conductivity of the non-ferrous metal conductive film 40 is stronger than that of the transparent conductive film Indium Tin Oxide (ITO), fast electron and ion injection can be achieved along with charge transfer during oxidation-reduction reaction of electrochromism, and the color change rate of the electrochromic device 30 can be further improved. The color change rate is an important performance index of the electrochromic device 30, and the conductivity of the electrode is increased to realize the rapid conversion between the fading state and the coloring state, so that the overall device performance of the cover plate assembly 100 is effectively improved.

In summary, according to the cover plate assembly 100 of the embodiment of the present invention, the non-ferrous metal conductive film 40 replaces the lower ITO conductive film, the film and the ink material three-layer structure film in the prior art, so that the manufacturing process and the manufacturing cost of the cover plate assembly 100 are effectively reduced, the overall thickness of the cover plate assembly 100 is reduced, and the design trend of the electronic device 200 is met. In addition, the apron subassembly 100 of this application not only can reach the same effect of discolouing under the attenuate structure, reduce cost's the prerequisite, can also be through adopting non ferrous metal conductive film 40 as the second conductive electrode, can further promote electrochromic device 30's the rate of discolouing, effectively promotes apron subassembly 100's whole device performance.

The present application also provides an electronic device 200, as shown in fig. 6, the electronic device 200 of the present application includes the cover plate assembly 100 in the above-mentioned embodiment. The electronic device 200 of the present application may be a mobile phone, a computer, or other electronic products. In the present application, a mobile phone may be specifically described as the electronic device 200 of the present application, referring to fig. 6, the cover plate assembly 100 may be a color-changeable mobile phone rear cover, in the mobile phone rear cover, a rear camera module block may be disposed on the mobile phone rear cover to serve as a rear camera 201 of the mobile phone, a light supplement lamp 202 may also be disposed on the mobile phone rear cover, and the light supplement lamp 202 may be used as the light supplement lamp 202 of the rear camera 201 at low brightness, and may also be used for a flashlight. The electrochromic device 30 belongs to transmission type electrochromic, when the electrochromic device 30 is not applied with external voltage, the electrochromic device 30 does not absorb light in each wave band (390-760 nm) of a visible light region, that is, all incident light passes through, and has the maximum transmittance, at this time, the electrochromic device 30 is in a transparent state, and the color seen by eyes is the light reflected from the nonferrous metal conductive film 40.

When a certain voltage is applied to the electrochromic device 30, the electrochromic device 30 gradually changes from a discolored state to a colored state, the electrochromic device 30 absorbs part of light in a partial waveband of a visible light region, has the lowest transmittance, and reflects other colors, and at this time, the color of the mobile phone rear cover observed by human eyes is the color of the colored state of the electrochromic device 30. The mobile phone rear cover with the changeable color formed by the cover plate assembly 100 in the mobile phone can not only bring a gorgeous feeling and a cool feeling to a user, but also meet the aesthetic requirements of the user, ensure the whole weight and thickness of the mobile phone to be lighter and thinner, and improve the user experience.

In this application, first conductive film 20 and non ferrous metal conductive film 40 can be connected with the chip in the cell-phone as the first conducting electrode and the second conducting electrode of electrochromic device 30 to in the APP of access cell-phone, when the cell-phone APP is opened, for example open WeChat or QQ, can drive electrochromic device 30 and colour, further promote user experience.

Of course, other structures and principles of the mobile phone will be understood and enabled by those skilled in the art, and will not be described in detail in this application.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.