CN113655671A

CN113655671A - Display diaphragm, housing and electronic device

Info

Publication number: CN113655671A
Application number: CN202110970163.2A
Authority: CN
Inventors: 叶万俊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-11-16

Abstract

The application discloses a display membrane, a shell and an electronic device. The display membrane comprises a first electrode layer, a second electrode layer arranged opposite to the first electrode layer and a medium layer arranged between the first electrode layer and the second electrode layer. The second electrode layer is formed with a plurality of first pattern regions and first non-pattern regions electrically isolated from each other, and by changing a voltage applied between the plurality of first pattern regions of the second electrode layer and the first electrode layer at a certain timing, portions of the dielectric layer corresponding to the plurality of first pattern regions exhibit different colors, so that the display film displays a dynamic effect. In the embodiment of the application, the plurality of first pattern regions are formed on the second electrode layer, the dielectric layer is arranged between the first electrode layer and the second electrode layer, when the dielectric layer is in different modes, the display membrane realizes dynamic effects such as displaying dynamic time through the change among the plurality of first pattern regions, and the functionality of the shell is improved.

Description

Display diaphragm, housing and electronic device

Technical Field

The application relates to the technical field of display devices, in particular to a display membrane, a shell and electronic equipment.

Background

With the development of modern technology, electronic products such as mobile phones and tablet computers have become indispensable tools for people, and when consumers shop for various electronic products with increasingly improved functions, the appearance of the electronic products also gradually becomes an important factor for controlling whether the consumers shop or not. In order to improve the appearance identification degree of the existing electronic product, the shell is designed to have a simple color or pattern change effect, however, the change of the color and the pattern of the shell only plays a role in decoration, and the functionalization is difficult to achieve.

Disclosure of Invention

The embodiment of the application provides a display membrane, a shell and an electronic device.

The display membrane of this application embodiment includes first electrode layer, second electrode layer and dielectric layer, wherein the second electrode layer with first electrode layer sets up relatively, the dielectric layer sets up first electrode layer with between the second electrode layer, the second electrode layer is formed with a plurality of first pattern regions and first non-pattern region that electrically separate each other, wherein, through changing according to certain chronogenesis the second electrode layer a plurality of first pattern regions with the voltage of applying between the first electrode layer, in the dielectric layer with the part that a plurality of first pattern regions correspond presents different colours, so that the display membrane shows dynamic effect.

The display membrane of the embodiment of the application is formed with a plurality of first pattern areas on the second electrode layer, and utilizes the characteristic that the dielectric layer has different colors under the effect of different modes, the dielectric layer is arranged between the first electrode layer and the second electrode layer, and different electric fields are formed by changing the voltage applied between the first electrode layer and the second electrode layer according to a certain time sequence, so that the dielectric layer is in different modes, and the display membrane can display dynamic effects through the change between the plurality of first pattern areas, such as displaying dynamic time, thereby improving the functionality of the shell and the interactive experience between a user and the shell.

The housing of the embodiment of the present application includes the display membrane and the cover plate in the above embodiments, and the cover plate covers the display membrane.

The casing of this application embodiment through being provided with the display diaphragm for can realize showing the function of dynamic time on the casing, through covering the display diaphragm with the apron, make when playing guard action such as waterproof dustproof to the display diaphragm, can show dynamic time on the apron, thereby make the functional degree of casing higher, richen the interactive form between user and the casing.

The electronic device of the embodiment of the present application includes the housing and the processor in the above embodiments, and the processor is configured to control the circuit to apply the voltage to the display film.

The electronic equipment of this application embodiment, through using treater control circuit to exert voltage to showing the diaphragm for can demonstrate dynamic display effect on electronic equipment's casing, for example show dynamic time, thereby when improving electronic equipment outward appearance discernment degree, richen electronic equipment casing and user's interactive form, improve the functionality of casing.

Additional aspects and advantages of the present application 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 present application.

Drawings

The above and/or additional aspects and advantages of the present application 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 structural view of a housing and a display membrane in an embodiment of the present application;

FIG. 2 is a schematic diagram of a scenario in which a dynamic time is displayed on a housing only when a second electrode layer is patterned in the embodiment of the present application;

FIG. 3 is a schematic diagram illustrating the operation of a dielectric layer in an embodiment of the present application;

FIG. 4 is a schematic diagram of another operation principle of a dielectric layer in an embodiment of the present application

FIG. 5 is a schematic diagram illustrating the operation of displaying the dynamic time only when the second electrode layer is patterned in the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a first electrode layer and a second electrode layer both patterned by etching in accordance with the present embodiment;

FIG. 7 is a schematic diagram illustrating the operation principle of displaying dynamic time when the first electrode layer and the second electrode layer are both etched with patterns according to the embodiment of the present disclosure;

FIG. 8 is a schematic view of a case displaying dynamic time when the first electrode layer and the second electrode layer are etched with patterns according to an embodiment of the present disclosure

Fig. 9 is a schematic view illustrating an effect of forming a first pattern region in the second electrode layer according to the embodiment of the present application;

FIG. 10 is an enlarged schematic view at Q of FIG. 9 in an embodiment of the present application;

FIG. 11 is a schematic illustration of a pin field in an embodiment of the present application;

fig. 12 is a schematic structural diagram of an electronic device in an embodiment of the present application;

FIG. 13 is a schematic view of the structure of an optical film in an embodiment of the present disclosure;

FIG. 14 is a schematic view of yet another structure of an optical film in an embodiment of the present disclosure;

fig. 15 is a schematic view showing the effect of using a case having an optical film in the embodiment of the present application; (ii) a

FIG. 16 is a schematic view of a dynamic time display using a housing with an optical film according to an embodiment of the present disclosure;

fig. 17 is a schematic flow chart of a method for manufacturing a display film sheet in an embodiment of the present application.

Description of the main element symbols:

the electronic device 1000, the processor 300, the case 200, the cover plate 20, the sealing film 21, the optical film 22, the reflective layer 220, the OCA optical cement 23, the display film 100, the first base layer 11, the first substrate 110, the first electrode layer 111, the second pattern region 1110, the second non-pattern region 1111, the second base layer 12, the second substrate 120, the second electrode layer 121, the first pattern region 1210, the first non-pattern region 1211, the dial region 1212, the hour hand indication region 1213, the minute hand indication region 1214, the time indication region 1215, the dielectric layer 13, the sealant 14, the connecting wires 15, the pin region P, and the line width range W.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 and fig. 2, a display film 100 is provided in the present embodiment, and the display film 100 includes a first electrode layer 111, a second electrode layer 121, and a dielectric layer 13. The second electrode layer 121 is disposed opposite to the first electrode layer 111, the second electrode layer 121 is formed with a plurality of first pattern regions 1210 and first non-pattern regions 1211 that are electrically isolated from each other, the dielectric layer 13 is disposed between the first electrode layer 111 and the second electrode layer 121, and by changing a voltage applied between the plurality of first pattern regions 1210 of the second electrode layer 121 and the first electrode layer 111 according to a certain timing, a portion of the dielectric layer 13 corresponding to the plurality of first pattern regions 1210 shows different colors, so that the display membrane 100 displays a dynamic effect.

In the display membrane 100 of the embodiment of the application, the plurality of first pattern regions 1210 are formed on the second electrode layer 121, and the dielectric layer 13 has the characteristic of presenting different colors under the action of different modes, the dielectric layer 13 is disposed between the first electrode layer 111 and the second electrode layer 121, and different electric fields are formed by changing voltages of different polarities applied between the first electrode layer 111 and the second electrode layer 121 according to a certain time sequence, so that the dielectric layer 13 is in different modes, and thus the display membrane 100 can realize a dynamic effect through the conversion between the plurality of first pattern regions 1210, for example, realize dynamic time display, thereby improving the functionality of the housing 200 and the interaction experience between a user and the housing 200.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

With the development of communication technology, electronic products such as smart phones, tablet computers, notebook computers, smart watches, and the like have become indispensable tools for people. When facing an electronic product full of Linglan, consumers need to consider whether the functions of the product meet their own needs, and the appearance of the product is also one of the important factors for the consumers to choose. In order to improve the appearance identification of the existing electronic product, a simple color or pattern change display effect is generally designed on the shell. For example, a decorative pattern is designed on the housing, a dynamic effect such as a simple switching display is performed, or an overall multicolor change effect is realized on the housing, or both of them are considered to realize multicolor change and pattern conversion.

However, in any of the above display effects, the decorative function added to the electronic product exists, and the final effect is only a limited increase in the appearance expression of the electronic product, but the decorative effect does not have or has only low functionality (for example, color change accompanying incoming call display) and also causes aesthetic fatigue after long-term use by the user.

In order to solve the above problem, in the embodiment of the present application, by improving the structure of the display film 100 in the housing 200 of the electronic device 1000 (as shown in fig. 9), a plurality of patterns are formed in the display film 100, and by setting a software delay program, after delaying for a preset time, a voltage is controlled to be applied to the corresponding first pattern area 1210 of the display film 100 according to a preset rule, so that the dielectric layer 13 in the display film 100 can operate in different modes, and thus the dielectric layer 13 presents different colors and dynamically presents the pre-formed patterns through color contrast.

Thus, through reasonable layout patterns, dynamic effects such as dynamic clock effects can be realized on the display membrane 100, so that the display of the dynamic patterns on the shell 200 has functionality, and the user experience is improved.

Specifically, the display film 100 may further include a first substrate 110 and a second substrate 120, the second substrate 120 is disposed opposite to the first substrate 110, the first substrate 110 may be disposed on a side of the display film 100 close to the outer surface of the casing 200, and the second substrate 120 is correspondingly disposed away from the outer surface of the casing 200. The first electrode layer 111 may be plated on the first substrate 110, and the second electrode layer 121 may be plated on the second substrate 120.

The first substrate 110 and the second substrate 120 may be made of the same material, for example, an optically transparent polyethylene terephthalate (PET) film, which is often used as a substrate for a metal plating film, a photosensitive film, and the like, and an electrical insulating material, for example, a printed circuit wiring substrate, which has good optical transparency, high thermal stability, and low cost.

Certainly, the first substrate 110 and the second substrate 120 may also be made of different materials, as long as the first substrate 110 and the second substrate 120 are flexible transparent films, which can ensure a certain transmittance and can withstand a certain temperature, for example, 100 ℃ to 200 ℃, so as to avoid the problems of dissolution, failure or falling off of the film layers of the first substrate 110 and the second substrate 120.

The first electrode layer 111 and the second electrode layer 121 may be Indium Tin Oxide (ITO) coatings, the first electrode layer 111 may be plated on one side of the first substrate 110, and the side of the first substrate 110 plated with the first electrode layer 111 is disposed toward the side of the second substrate 120 plated with the second electrode layer 121, so that the first substrate 110 is disposed opposite to the second substrate 120.

ITO, i.e., tin-doped indium oxide, is one of transparent conductive oxides TCOs, and is currently the most important transparent conductive material due to its good combination of conductivity and transparency. ITO is mainly used in the fields of liquid crystal displays, touch panels, solar thin film batteries, organic EL (electroluminescence) elements for lighting, and the like. Indium oxide absorbs ultraviolet light and does not absorb visible light, so that the transparent performance is achieved, and tin doping can lose transmittance but can improve conductivity, so that the conductivity and the transmittance of the ITO can be balanced.

In order to display the dynamic pattern effect on the housing 200, a corresponding pattern and a corresponding circuit may be etched on at least one of the first electrode layer 111 and the second electrode layer 121 according to the dynamic pattern effect designed in advance. In one embodiment, a plurality of first pattern regions 1210 and first non-pattern regions 1211 are formed on the second electrode layer 121, wherein the first pattern regions 1210 are corresponding patterns and lines etched on the second electrode layer 121, and the first non-pattern regions 1211 are all regions except all the first pattern regions 1210. In another embodiment, the first pattern region 1210 may be selectively etched on both the first electrode layer 111 and the second electrode layer 121, or only the first pattern region 1210 may be selectively etched on the second electrode layer 121.

In particular, the plurality of first pattern regions 1210 and the first non-pattern region 1211 are electrically isolated from each other such that the plurality of first pattern regions 1210 may be controlled, or the voltage between the plurality of first pattern regions 1210 and the first non-pattern region 1211 may be controlled, respectively.

It should be noted that, at this time, the materials for forming the first electrode layer 111 and the second electrode layer 121 may be changed according to the difference between the etching positions of the first pattern region 1210. For example, when the first pattern region 1210 is selectively etched on the first electrode layer 111, since the first electrode layer 111 is plated on the first substrate 110, and the first substrate 110 is close to the outer surface of the housing 200, in order to avoid the color of the first electrode layer 111 affecting the pattern and the color of the pattern to be displayed, the first electrode layer 111 can only be a transparent conductive film, such as an ITO film, an AZO film, a silver nanowire conductive film, etc., wherein the ITO film is preferably selected in consideration of cost; when the first pattern region 1210 is selectively etched only on the second electrode layer 121, since the second electrode layer 121 is plated on the second substrate 120 and the second substrate 120 is disposed opposite to the first substrate 110, the material scheme of the second electrode layer 121 may be expanded to a colored conductive film without being limited to a transparent conductive film, for example, a fine copper metal mesh conductive film.

That is, no matter whether the first pattern region 1210 is formed only on the first electrode layer 111/the second electrode layer 121 by etching or the first pattern region 1210 is formed on both the first electrode layer 111 and the second electrode layer 121 by etching, in order to avoid the influence of the electrode layer on the display pattern and the pattern color of the first pattern region 1210 to be displayed, the material of the first electrode layer 111 must be a transparent conductive film, and the material of the second electrode layer 121 may not be limited thereto.

In one embodiment of the present application, a plurality of first pattern regions 1210 are selectively formed on the second electrode layer 121, and the second electrode layer 121 is an ITO thin film. The process of etching the plurality of first pattern regions 1210 on the second electrode layer 121 includes: and (3) pressing and covering a dry film on the complete ITO surface by adopting a yellow light etching process, then carrying out exposure and development processes, and finally etching the designed pattern and the designed circuit. Similarly, when the first electrode layer 111 is an ITO thin film, if a pattern needs to be etched on the first electrode layer 111, the pattern can be formed by the above-mentioned process flow.

A dielectric layer 13 may be disposed between the first electrode layer 111 and the second electrode layer 121, the dielectric layer 13 may connect the first electrode layer 111 and the second electrode layer 121, or the first electrode layer 111 and the second electrode layer 121 are both closely attached to the dielectric layer 13, and the connection edge may be bonded together by the sealant 14, so that the first electrode layer 111, the dielectric layer 13, and the second electrode layer 121 are attached more closely, and the sealant 14 further has a waterproof function, which may increase the waterproof performance of the display film 100.

The dielectric layer 13 may be an electronic ink material, an electrochromic material, or a polymer dispersion material, so that when a voltage applied between the plurality of first pattern regions 1210 of the second electrode layer 121 and the first electrode layer 111 is changed in a certain timing, portions of the dielectric layer 13 corresponding to the plurality of first pattern regions 1210 may display different colors.

In particular, when the dielectric layer 13 includes an electrochromic material, the dielectric layer 13 may be converted between colorless transparency and blue color after being applied with a voltage, and when the dielectric layer 13 includes a polymer dispersion material, the dielectric layer 13 may be converted between milky color and colorless transparency after being applied with a voltage, and then, when the dielectric layer 13 is made of the above two materials, the second electrode layer 121 is generally required to be a colored material, and then, in this application, an electronic ink material that displays black or white color under different electric fields may be preferably used as the material of the dielectric layer 13.

It can be concluded that the principle of displaying the pattern of the first pattern area 1210 on the display film 100 is substantially as follows: if voltages with opposite polarities are applied to the first electrode layer 111 and the second electrode layer 121, the color of the dielectric layer 13 connected to the first electrode layer 111 and the second electrode layer can be changed, so that the whole case 200 can display the same color as the dielectric layer 13, and then a voltage with an opposite polarity to the previous polarity is applied to a certain first pattern region 1210 on the second electrode layer 121 and the first electrode layer 111, so that the color of a part of the dielectric layer 13 connected to the first pattern region 1210 to which the voltage is applied and the first electrode layer 111 can be changed, that is, the pattern of the first pattern region 1210 can be displayed (for example, white pattern, black background, or black pattern, white background, and pattern displayed by color contrast).

It should be noted that the above-mentioned color of the medium layer 13 is represented by the color of the side of the medium layer 13 close to the outer surface of the housing 200.

After the basic principle of pattern display is known, the dynamic pattern can be displayed through the plurality of first pattern regions 1210 by using the characteristics of the dielectric layer 13 based on the principle, combining the pattern etched on the second electrode layer 121, and applying a voltage regularly to the first electrode layer 111 and the second electrode layer 121, wherein the voltage applied between the plurality of first pattern regions 1210 and the first electrode layer 111 can be changed at a certain time sequence.

For example, in one embodiment as illustrated in fig. 2, the display membrane 100 displays the basic pattern of the timepiece on the display membrane 100 by etching the basic pattern of the timepiece, such as dial scale, hour hand, minute hand, and the like, on the second electrode layer 121, and then by changing the voltage applied between the plurality of first pattern regions 1210 representing the timepiece pattern and the first electrode layer 111, so that the portions of the dielectric layer 13 corresponding to the plurality of first pattern regions 1210 to which the voltage is applied appear different colors.

Moreover, the voltage between the first electrode layer 111 and the corresponding first pattern region 1210C and first pattern region 1210D representing the minute hand pattern in the clock pattern may be changed at a certain timing, so that a dynamic display effect of minute hand switching of the clock may be presented on the display membrane 100.

Referring to fig. 3 and 4, in some embodiments, the dielectric layer 13 may be used to switch between two colors under different electric field switching conditions. In this way, the two-color switching characteristic can be realized by the dielectric layer 13 under the condition of switching different electric fields, so that the background color of the display film 100 can be switched between two colors.

Specifically, the color of the medium layer 13 mentioned herein is represented as the color of the side of the medium layer 13 close to the outer surface of the casing 200, and since the first substrate 110 disposed close to the outer surface of the casing 200 is made of a transparent material, the background color of the display membrane 100 is the color of the medium layer 13. The dielectric layer 13 can display different colors under the action of different electric fields due to its own characteristics, and then the dielectric layer 13 can switch between two colors under the condition of switching between different electric fields, so that the background color of the display film 100 can be switched between two colors.

Moreover, when a plurality of electric fields in different directions are regularly formed between the first electrode layer 111 and the second electrode layer 121 in turn, the dielectric layer 13 may perform color switching corresponding to the regularity of the electric fields, so that the color change of the dielectric layer 13 may cause the color of the background of the display membrane 100 to be different from the color of the first pattern area 1210 to be displayed under the reasonable design of the power-on mode, thereby realizing the display of the corresponding pattern on the display membrane 100.

Referring to fig. 2, 3 and 4, in some embodiments, the material of the dielectric layer 13 may include electronic ink, the first electrode layer 111 may be a transparent electrode layer, and the display film 100 can achieve a dynamic clock display effect through a plurality of first pattern regions 1210.

Therefore, the electronic ink can be used for carrying out two-color conversion under the action of different electric fields, and the bistable characteristic of the electronic ink can be used for realizing the conversion display of patterns; in addition, the display film 100 realizes a clock dynamic display effect through the plurality of first pattern regions 1210, so that the dynamic pattern effect displayed on the display film 100 has functionality, and the interaction experience between a user and a housing in which the display film 100 is installed is improved.

Specifically, the electronic ink refers to a series of microcapsules, each microcapsule particle encapsulates a positively charged white titanium oxide particle, a negatively charged black carbon particle and an electrophoretic fluid, and the color of the electronic ink material can be converted between white and black after a voltage is applied.

As shown in fig. 3, when the first electrode layer 111 is negatively charged and the second electrode layer 121 is positively charged or the first electrode layer 111 is not conductive and the second electrode layer 121 is more positively charged, the carbon particles in the microcapsule are aggregated toward the lower layer and the titanium oxide particles are aggregated upward, and the color of the surface near the first electrode layer 111 is white.

As shown in fig. 4, when the first electrode layer 111 is positively charged and the second electrode layer 121 is negatively charged or the first electrode layer 111 is nonconductive and the second electrode layer 121 is more negatively charged, the carbon particles in the microcapsule are gathered toward the upper layer and the titanium oxide particles are gathered downward, and the surface near the first electrode layer 111 shows a black color.

In addition, when the introduced voltage is different in magnitude or the conduction time is different, the gray scale of the color of the surface close to the first electrode layer 111 may also be different, that is, the background color of the display film 100 with different gray scales may be obtained by controlling the voltage or the charging time with different magnitudes.

The electronic ink also has a bi-stable character, which means that the dielectric layer 13 made of the electronic ink material can display black/white under the action of an electric field, and the color of the dielectric layer 13 does not change but remains the original color until no new electric field is established. This allows the display film 100 to consume power only when the pattern display is changed and not to consume power when the pattern display is maintained, so that the display film 100 is more energy-saving. In addition, the electronic ink technology requires small electric energy, has high response speed, and is smoother when patterns are changed, so that the user experience is better.

The first electrode layer 111 may be a transparent electrode layer, and since the first pattern region 1210 is selectively etched on the first electrode layer 111, and the first electrode layer 111 is plated on the first substrate 110, and the first substrate 110 is close to the outer surface of the housing 200, in order to avoid the influence of the self color of the first electrode layer 111 on the pattern and the color of the pattern to be displayed, the first electrode layer 111 is preferably a transparent conductive film, such as an ITO film, an AZO film, a silver nanowire conductive film, and the like, wherein the ITO film is preferably selected in consideration of cost.

In order to realize the functional requirement of the dynamic display effect of the clock, a basic pattern of the dial needs to be etched on the second electrode layer 121, and in order to synchronize the time of the electronic device 1000 with the dynamic time of the display, precise time control needs to be realized, that is, the switching of the display pattern on the dial needs to follow a certain change frequency.

For convenience of explanation, the dial plate patterns with only hour hands, minute hands and time scales are designed as shown in fig. 2, wherein the patterns with the time scales are triangular, the patterns with the hour hands and the minute hands are both circular, and the size of the pattern corresponding to the hour hand is larger than that of the pattern corresponding to the minute hand. In the scheme, the minute hand is arranged to move once every 5 minutes, the hour hand is arranged to move once every 1 hour, namely 12 time scales exist, the minute hand can represent 5 minutes when moving between two adjacent time scales, and the hour hand can represent 1 hour when moving between two adjacent time scales.

Then, in etching the patterns, 12 triangular time scale patterns are arranged at equal angles on the circumference, 12 circular hour hand patterns are arranged at equal angles on the inner circumference formed by the 12 time scale patterns corresponding to the time scale patterns, 12 small circular minute hand patterns are also arranged at equal angles on the inner circumference formed by the 12 time scale patterns corresponding to the time scale patterns, and the minute hand patterns are arranged between the hour hand patterns and the time scale patterns.

Of course, in other embodiments, the pattern for marking the time scale, hour hand and minute hand may be in other shapes, the present scheme is only exemplary for illustration and is not to be construed as a limitation to the specific embodiments, and other indicative patterns such as adding a second hand, date, etc. may also be added.

In particular, in order to display the effect of the dynamic display of the clock, for example, to simulate the movement effect of the minute hand, it is necessary to display by switching one minute hand pattern every 5 minutes after forming a plurality of minute hand patterns on the second electrode layer 121, and the movement effect of the hour hand is the same.

After the clock pattern is designed, in order to realize the timing function, namely, the hour hand and the minute hand are moved by a time scale in the visual effect according to the preset time interval, accurate time control is needed. The common method is to use hardware delay and software delay.

The hardware delay usually needs a timer or a counter, and the method can reduce the calculation amount of the CPU, improve the working efficiency of the CPU and simultaneously achieve accurate timing. The timer is usually a crystal oscillator with 12MHz or 6MHz, one machine period of the two timers is 1 mus and 2 mus respectively, and accurate timing can be realized by circulating through a software program. The hardware delay is high in precision, but generally, the delay time is shorter than a second level, and the dynamic time displayed on the shell 200 is used as a non-standard source means for acquiring time data by a user and generally does not need to be accurate to the second level, so that the software delay is preferably adopted in the embodiment of the scheme.

For example, a programmed delay program may be adopted, the minute hand is adjusted to the next time scale by the delay program once per cycle, and the hour hand is adjusted to the next time scale by the delay program twelve times per cycle, so as to finally realize accurate control of the dynamic time, so that the housing 200 may realize the dynamic display effect of the clock through the display diaphragm 100.

In this embodiment, the position of the minute hand and the hour hand is adjusted by controlling the applied voltage according to the time delay program, which will be described in detail below.

Referring to fig. 2 and 5, in some embodiments, when the first non-pattern area 1211 and the first electrode layer 111 are applied with a voltage opposite to the first pattern area 1210, the display film 100 displays a pattern of the first pattern area 1210 to which the voltage is applied.

In this way, by using the characteristic of the dielectric layer 13 that the dielectric layer displays different colors under different electric fields, when the first non-pattern area 1211 and the first electrode layer 111 are both applied with a voltage opposite to that of the first pattern area 1210, the display membrane 100 can display the pattern of the first pattern area 1210 to which the voltage is applied, and the display principle is simple and easy to implement.

Specifically, as described above, since the dielectric layer 13 has a characteristic of displaying different colors under the action of different electric fields, and the color change of the case 200 is realized by the characteristic of the dielectric layer 13 itself, the display of the pattern can be realized by making the color of the pattern different from the background color of the case 200.

In one embodiment, a plurality of first pattern regions 1210 are etched only on the second electrode layer 121 to be able to simultaneously apply opposite voltages to the second electrode layer 121, or to apply opposite voltages to the plurality of first pattern regions 1210 and to the first pattern regions 1210 and the first non-pattern region 1211 at the same time; however, since the first electrode layer 111 is not etched with a pattern or is not etched with an extra line, only voltages of the same polarity can be applied to the first electrode layer 111 at the same time. Thus, the first electrode layer 111 and the second electrode layer 121 can have an electric field in only one direction at the same time.

Referring to fig. 2 and 5 in combination, fig. 2 is a schematic diagram illustrating a dynamic pattern display, in an embodiment, a plurality of first pattern regions 1210 are etched only on the second electrode layer 121, and the dielectric layer 13 is made of electronic ink. For convenience of description, an area where twelve time scales are formed is divided into a first pattern area 1210A in fig. 2 and 5, an hour hand displayed in synchronization with the current time of the electronic apparatus 1000 is denoted as a first pattern area 1210B in fig. 2 and 5, a minute hand displayed in synchronization with the current time is denoted as a first pattern area 1210C in fig. 2 and 5, and minute hands displayed by switching at intervals of 5 minutes are denoted as a first pattern area 1210D in fig. 2 and 5.

It should be further noted that each pattern of the first pattern area 1210A is a triangle in fig. 2, the pattern of the first pattern area 1210B, the pattern of the first pattern area 1210C, and the pattern of the first pattern area 1210D are circular, wherein the pattern size of the first pattern area 1210B is larger than that of the first pattern area 1210C, and the pattern size of the first pattern area 1210C is the same as that of the first pattern area 1210D.

To achieve the effect of displaying dynamic time, as shown in fig. 5(a), first, a negative charge is applied to the first electrode layer 111 and a positive charge is applied to the second electrode layer 121, so that an electric field E1 is formed between the first electrode layer 111 and the second electrode layer 121, as shown in fig. 2(a), and thus the dielectric layer 13 displays a color, such as white.

As shown in fig. 5(B), the polarity of the voltage applied to the first electrode layer 111 is changed, i.e., positive voltage is applied to the first electrode layer 111, the polarity of the voltage of the first non-pattern area 1211 on the second electrode layer 121 is kept unchanged, i.e., the first non-pattern area 1211 is positive, and negative voltage is applied to the first pattern area 1210A, the first pattern area 1210B and the first pattern area 1210C, so as to establish another electric field E2, at which time the first pattern area 1210D is kept positive, the color of the portion of the dielectric layer 13 corresponding to the electric field E2 changes, e.g., from white to black, and the color of the remaining dielectric layer 13 except the area affected by the electric field E2 does not change due to the bistable property of the dielectric layer 13, and remains white. It can be understood that, as shown in fig. 2(B), the first pattern area 1210A, the first pattern area 1210B and the first pattern area 1210C are black at this time, and the remaining areas are white, so that the display time is twenty-two.

It should be noted that the above time is only illustrated schematically, and in practical use, the communication with the electronic device 1000 may be established to obtain the current time of the electronic device 1000, and then the corresponding hour and minute hand display is controlled, so that the time displayed on the display membrane 100 is synchronized with the time of the electronic device 1000.

As shown in fig. 5(C), the first pattern area 1210C is again applied with positive electricity, the first electrode layer 111 is again applied with negative electricity, the electric field E1 is reestablished, and the voltages applied to the first pattern area 1210A and the first pattern area 1210B are maintained to be the same as the voltage polarity applied last time, that is, to be negative electricity, and the first pattern area 1210D is always maintained in the non-display state, that is, the voltage polarity applied to the first pattern area 1210D is maintained at the initial positive electricity. At this time, as shown in fig. 2(C), so that the color of the first pattern region 1210C is changed to white as the color of the medium layer 13 is changed from black to white, it appears from the visual effect that the outer contour of the first pattern region 1210C disappears, i.e., the minute hand indicating twenty disappears, and the first pattern region 1210A and the first pattern region 1210B remain black due to the bistable property of the medium layer 13, i.e., it appears that the time scale and the hour hand are always displayed;

as shown in fig. 5(D), the first pattern area 1210D is finally negatively charged, the first electrode layer 111 is positively charged, the electric field E2 is reestablished, and the voltages applied to the first pattern area 1210A, the first pattern area 1210B, and the first pattern area 1210C are maintained at the same polarity as the voltage applied last time, that is, the first pattern area 1210A and the first pattern area 1210B are maintained at negative charges, and the first pattern area 1210C is maintained at positive charges. At this time, a portion of the dielectric layer 13 corresponding to the electric field E2 changes color, such as from white to black, and similarly, due to the bistable property of the dielectric layer 13, as shown in fig. 2(D), the first pattern region 1210A, the first pattern region 1210B and the first pattern region 1210D are black, and the rest of the region is white, so that the patterns of the first pattern region 1210A, the first pattern region 1210B and the first pattern region 1210D can be displayed by the black outline, and the display time is twenty-five times.

It should be explained that the steps of fig. 3(c) to 3(d) can be executed after every 5 minutes by the above mentioned software delay, i.e. by using a delay program to precisely time, so that the dynamic effect of the pattern, such as the display of the dynamic time, can be realized; and, the direction of electric field E1 is different from that of electric field E2; meanwhile, when the first pattern area 1210C and the first pattern area 1210D are displayed in a switched manner, after the pattern of the first pattern area 1210C disappears visually, the current polarity voltage is maintained in the first pattern area 1210C or the first pattern area 1210C is powered off, so as to achieve the purpose of saving power, and due to the bistable characteristic of the dielectric layer 13, even if the first pattern area 1210C is powered off, the color before the power off is displayed in the corresponding part of the dielectric layer 13 in the first pattern area 1210C is maintained, that is, the first pattern area 1210C is maintained in a disappeared state.

Then, as can be easily understood from the above description and from fig. 2 and 3, when implementing a pattern displaying any one of the first pattern regions 1210, it is necessary to ensure that the voltage applied to the first pattern region 1210 is opposite to the voltage applied to the first electrode layer 111 and also opposite to the voltage applied to the first non-pattern region 1211.

Referring to fig. 6, 7 and 8, in some embodiments, the first electrode layer 111 is formed with a plurality of second pattern regions 1110 and second non-pattern regions 1111, the second pattern regions 1110 are disposed in one-to-one correspondence with the first pattern regions 1210, and the display film 100 displays the patterns of the second pattern regions 1110 under the condition that the first pattern regions 1210 and the corresponding second pattern regions 1110 are applied with opposite voltages, the first pattern regions 1210 and the first non-pattern regions 1211 are applied with opposite voltages, and the second pattern regions 1110 and the second non-pattern regions 1111 are applied with opposite voltages.

In this way, a plurality of

second pattern regions

1110 and 1111 are also formed in the first electrode layer 111, and the second pattern regions 1110 and the first pattern regions 1210 are disposed in one-to-one correspondence, so that the second pattern regions 1110 and the first pattern regions 1210 can cooperate with each other to generate a plurality of electric fields according to different applied voltages, thereby enabling a higher frequency display pattern.

In particular, as shown in fig. 6, in some embodiments, a plurality of second pattern regions 1110 and a plurality of second non-pattern regions 1111 corresponding to the plurality of first pattern regions 1210 and the first non-pattern regions 1211 may also be formed on the first electrode layer 111. Then, at this time, it is also possible to simultaneously apply opposite voltages to the first electrode layer 111, or to apply opposite voltages to the plurality of second pattern regions 1110 on the first electrode layer 111 and to the second pattern regions 1110 and the second non-pattern regions 1111 at the same time.

Thus, compared to the case where the plurality of first pattern regions 1210 are formed only in the second electrode layer 121, the plurality of second pattern regions 1110 are formed in the first electrode layer 111, so that a plurality of electric fields can be formed between the first electrode layer 111 and the second electrode layer 121 at the same time, thereby shortening the response time required for pattern display and change.

That is, in the case where a plurality of pattern regions are etched in both the first electrode layer 111 and the second electrode layer 121, voltages having different polarities may be simultaneously applied to the first pattern region 1210 and the second pattern region 1110 that need to be erased and the first pattern region 1210 and the second pattern region 1110 that need to be displayed, so that the display speed of the pattern may be faster than that in the case where the first pattern region 1210 is formed only on the second electrode layer 121.

As shown in fig. 7 and 8, it should be noted that, when the voltages of the second pattern region 1110 and the corresponding first pattern region 1210 are applied in opposite directions, the voltages of the second pattern region 1110 and the second non-pattern region 1111 are applied in opposite directions, and the voltages of the first pattern region 1210 and the first non-pattern region 1211 are applied in opposite directions, the display sheet 100 can display the pattern of the second pattern region 1110 to which the voltages are applied.

It is understood that, in the above case, it can be deduced that the second non-pattern region 1111 and the first pattern region 1211 are applied with opposite voltages, so that the dielectric layer 13 can display a corresponding color under the action of the formed electric field, i.e., a corresponding background color can be displayed on the housing 200; when the voltages applied to the second pattern region 1110 and the corresponding first pattern region 1210 are opposite, a new electric field is formed between the second pattern region 1110 and the corresponding first pattern region 1210, and the direction of the new electric field is opposite to the direction of the electric field formed by the second non-pattern region 1111 and the first pattern region 1211, so that the corresponding connected part of the dielectric layer 13 changes color under the action of the new electric field. Thus, the background color may not correspond to the pattern color (e.g., background black, pattern white, or background white, pattern black), so that the pattern of the second pattern region 1110 to which the voltage is applied may be displayed.

At this time, as shown in fig. 7(b), 7(C) and 8, the process of converting the minute hand (second pattern region 1110C) displaying the previous state currently displayed on the membrane 100 into the minute hand (first pattern region 1110D) displaying the next time is to change the polarities of the voltages originally applied to the second pattern region 1110C and the corresponding first pattern region 1210C and simultaneously change the polarities of the voltages originally applied to the second pattern region 1110D and the corresponding first pattern region 1210D.

It can be easily obtained that, under the condition that a plurality of pattern regions are etched on both the first electrode layer 111 and the second electrode layer 121, voltages with different polarities can exist on the second electrode layer 121 at the same time, which means that voltages can be applied to the pattern regions to be disappeared and the pattern regions to be displayed at the same time, so that the display speed of the patterns is faster, the display speed can be doubled compared with the case that the pattern regions are formed on only the first electrode layer 111, and the dynamic display effect is more natural.

Of course, the above embodiments are only referred to, and since a functional pattern is required in the present application, for example, a dynamic time display, a plurality of patterns such as dial scales, hour hands, minute hands, etc. are required to be etched in order to display the dynamic time, and if a pattern is also formed on the first electrode layer 111, the cost will be increased; moreover, since the etching of the same pattern on the first electrode layer 111 is only to reduce the pattern display time, however, in the present application, the switching is set to be performed once in 5 minutes, and the requirement for the pattern refresh frequency is not high. Therefore, a plurality of pattern regions and non-pattern regions may be etched only on a single electrode layer in the present application.

Referring to fig. 9 and 10, in some embodiments, each of the first pattern region 1210, the first non-pattern region 1211 and the first electrode layer 111 is electrically connected to at least one connection wire 15.

In this way, the power source can apply voltages to the corresponding first pattern region 1210, the first non-pattern region 1211 and the first electrode layer 111 through the connecting wires 15 in a designed conduction mode to form an electric field to realize color change of the dielectric layer 13 and display a pattern of the first pattern region 1210 to be displayed.

Specifically, in the present application, the second electrode layer 121 is etched with a circuit, and the circuit encloses a general outer contour of a pattern to be displayed, that is, the second electrode layer 121 is provided with the connection wire 15, and the connection wire 15 is provided according to a shape of the pattern to be displayed. Each of the first pattern regions 1210 and the first non-pattern regions 1211 on the second electrode layer 121 includes at least one connection wire 15, so that a power source can apply a voltage to the corresponding first pattern region 1210 and the first non-pattern region 1211 through the connection wire 15 in a designed power-on mode. Meanwhile, at least one connection wire 15 is also included on the first electrode layer 111, so that a voltage can be applied to the first electrode layer 111 in a designed energization pattern.

Referring to fig. 9 and 11, in some embodiments, the first pattern area 1210 may include a plurality of time scale areas 1212, and all connection wires connected to the plurality of time scale areas may be gathered at the same pin. In this way, by converging the plurality of connection wires 15 on the time scale 1212 to the same pin, simultaneous control of the pattern of the time scale region 1212 can be facilitated.

Specifically, in one embodiment mentioned above, in order to display dynamic time, a pattern of a basic dial may be formed on the second electrode layer 121, that is, in the plurality of first pattern regions 1210 formed on the second electrode layer 121, a time scale region 1212 may be included. The time scale region 1212 includes twelve time scale patterns, which are consistent in a triangle.

It will be appreciated that twelve time scale patterns need to be displayed simultaneously in order to show the time more clearly to the user, and that after the time display mode is turned on, the time scale region 1212 needs to be in a normally on state. Therefore, in order to facilitate the control of the time scale region 1212, twelve connecting wires 15 corresponding to twelve time scale patterns may be combined together, i.e., converged at the same pin, for example, as shown in fig. 11, converged at pin a, and then pin a is connected to the power supply, so that the power supply can control the simultaneous application of voltage to the twelve time scale patterns of the time scale region 1212, so that the patterns of the time scale region 1212 are simultaneously displayed and simultaneously disappear.

Of course, in other embodiments, the number of the connection wires 15 disposed on the time scale region 1212 may be other than that required, and the application is not limited thereto.

Referring to fig. 9 and 11, in some embodiments, the first pattern area 1210 may further include a plurality of hour hand indication areas 1213, each hour hand indication area 1213 is connected to one connection wire 15, the plurality of connection wires 15 are independently disposed, and each connection wire 15 corresponds to one pin.

As such, by providing the connection wire 15 connecting each hour hand indication area 1213 independently, each hour hand indication area 1213 can be controlled individually, thereby ensuring that only one corresponding hour hand indication area 1213 pattern is displayed at the same time.

Specifically, in one embodiment mentioned above, in order to display the dynamic time, an hour hand pattern indicating the current time may be formed on the second electrode layer 121, that is, in the plurality of first pattern regions 1210 formed on the second electrode layer 121, an hour hand indication region 1213 may be included. Where the pattern of the plurality of hour hand indication areas 1213 is set to switch the display every one hour, the hour hand indication areas 1213 may be twelve. As shown in fig. 6, the outline of the hour hand indication area 1213 is circular, but may be various regular or irregular shapes such as square, rectangle, oblong, and linear

It will be appreciated that for clarity of presentation of the current time to the user, the hour hand may only show one at the same time. Therefore, the connecting wires 15 respectively disposed on the plurality of hour hand indication areas 1213 need to be disposed independently, that is, the connecting wire 15 corresponding to each hour hand indication area 1213 corresponds to a single pin, as shown in fig. 11, the twelve hour hand indication areas 1213 are divided into

pins

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 in fig. 11 along the clockwise direction.

Thus, the power supply can simultaneously apply a voltage to the hour hand indication areas 1213 that need to be displayed and simultaneously apply a voltage of a different polarity or no voltage to the hour hand indication areas 1213 that do not need to be displayed through the separate connection wires 15, so that the hour hand pattern of the hour hand indication area 1213 corresponding to the current time can be displayed by respectively controlling the pins of the twelve hour hand indication areas 1213.

Referring to fig. 9, 10 and 11, in some embodiments, the first pattern area 1210 may further include a plurality of minute indication areas 1214, each minute indication area 1214 is connected with one connection wire 15, the plurality of connection wires 15 are independently disposed, and each connection wire 15 corresponds to one pin.

In this manner, by providing the connecting wires 15 connecting each minute hand indication area 1214 independently, each minute hand indication area 1214 can be controlled individually, thereby ensuring that only one corresponding minute hand indication area 1214 pattern is displayed at the same time.

Specifically, in the above-mentioned embodiment, in order to display the dynamic time, a minute hand pattern indicating the current time may be formed on the second electrode layer 121, that is, in the plurality of first pattern regions 1210 formed on the second electrode layer 121, a minute hand indication region 1214 may be included. Here, if the pattern of the minute hand indication areas 1214 is set so that the display is switched every five minutes, twelve minute hand indication areas 1214 may be provided.

As shown in fig. 9 and 10, the outline of the minute hand indication region 1214 is circular, wherein the size of one minute hand indication region 1214 is smaller than that of one hour hand indication region 1213, that is, the pattern corresponding to the minute hand indication region 1214 is a circular pattern with a smaller area. Of course, the outline of the minute hand indication area 1214 may be a square, a rectangle, an oblong, a line, or other regular or irregular shapes, as long as the outline can be distinguished from the outline of the hour hand indication area 1213, so that the user can clearly obtain the time.

It will be appreciated that only one minute hand can be displayed at the same time in order to clearly show the current time to the user. Therefore, the connecting wires 15 respectively disposed on the plurality of minute indication regions 1214 need to be independently disposed, that is, the connecting wire 15 corresponding to each minute display region corresponds to a single pin, as shown in fig. 11, the twelve minute indication regions 1214 are correspondingly divided into pins a, b, c, d, e, f, g, h, i, j, k, and l along the clockwise direction in fig. 11.

Therefore, the power supply can simultaneously apply voltage to the minute hand indicating area 1214 which needs to be displayed through the independent connecting wire 15, and simultaneously apply voltage with different polarities or apply no voltage to the minute hand indicating area 1214 which does not need to be displayed, so that the minute hand pattern of the minute hand indicating area 1214 corresponding to the current time can be displayed by respectively controlling the pins of the twelve minute hand indicating areas 1214.

In particular, in some embodiments, in order to facilitate operations such as electrical connection of the leads corresponding to all the first pattern regions 1210, as shown in fig. 11, all the leads corresponding to the first pattern regions 1210 may be selectively gathered in the lead region P, so that the circuit layout of the second electrode layer 121 may be optimized, and the circuit redundancy may be avoided.

In particular, as described above, the pin a shown in fig. 11 is a pin where all the connection wires 15 of the time scale region 1212 converge, the pins 1 to 12 are twelve pins of the hour hand indication region 1213, the pins a to l are twelve pins of the minute hand indication region 1214, and it should be noted that the pin B is a pin of the first non-pattern region 1211, the pin C is a pin of the first electrode layer 111, and the pin D is a spare pin.

Referring to fig. 10, in some embodiments, the width W of the connecting wires 15 may be in a range of 10 μm to 1000 μm. Thus, the line width of the connecting wire 15 is designed within a reasonable range, which can provide a good conduction condition for the first electrode layer 111 and the second electrode layer 121.

Specifically, when the line width of the connecting wire 15 is too small, for example, less than 10 μm, the conducting speed of any one of the first pattern region 1210, the first non-pattern region 1211 or the first electrode layer 111 corresponding to the connecting wire 15 is slow, so as to affect the forming speed of the electric field between the first electrode layer 111 and the second electrode layer 121, and further, the dynamic change frequency of the pattern is slow to adapt to the forming time of the electric field; when the line width of the connection wire 15 is too large, for example, more than 1000 μm, the line etched on the first electrode layer 111 and/or the second electrode layer 121 is too wide, which may cause discoloration of the dielectric layer 13.

Therefore, the line width W of the connecting wires 15 can be designed to be 10 μm-1000 μm, and preferably, the line width of the connecting wires 15 can be set to be 100 μm to achieve good conduction effect.

Referring to fig. 1 and 12, a housing 200 is provided in an embodiment of the present disclosure, in which the housing 200 includes the display film 100 and the cover plate 20 in any of the above embodiments, and the cover plate 20 covers the display film 100. So, through being provided with display membrane 100 for can realize the function of dynamic display pattern on casing 200, through covering display membrane 100 with apron 20, make when playing the guard action such as waterproof dustproof to display membrane 100, show dynamic pattern on apron 20, thereby improve casing 200's aesthetic property and functional.

Specifically, the housing 200 may be a battery rear cover of an electronic product such as a tablet computer, a smart phone, and a smart watch. The housing 200 includes a cover plate 20, and the cover plate 20 may be made of transparent glass material so as not to obstruct the transmission of light. The cover plate 20 may be glued with the display film 100, and the cover plate 20 may cover the display film 100, so that the display film 100 may achieve a surface waterproof effect through the cover plate 20 disposed thereon, and at the same time, the dynamic pattern effect exhibited by the display film 100 may be completely exhibited on the housing 200 through the cover plate 20.

Referring to fig. 1, in some embodiments, the housing 200 may further include a sealing film 21, and the sealing film 21 may be disposed on a side of the display membrane 100 facing away from the cover plate 20. In this manner, by providing the sealing film 21, the sealing property and the waterproof property of the display film 100 can be further enhanced, thereby extending the service life of the display film 100.

Specifically, the sealing film 21 may be disposed on a side of the display film 100 facing away from the cover plate 20, further, may be disposed on a side of the second substrate 120 facing away from the second electrode layer 121, or the sealing film 21 may be attached to the second substrate 120. The sealing film 21 may be a water oxygen barrier film, and the sealing film 21 may be formed on a substrate of plastic on which an inorganic oxide is deposited by magnetron sputtering, electron beam evaporation, or plasma enhanced chemical vapor deposition.

Because one of the factors influencing the service life of the display film 100 is the existence of water molecules and oxygen, if the air tightness is not good, after the display film 100 is placed for a period of time, oxygen and water vapor may enter the inside of the display film 100 through holes in various base materials, which affects the performance of the display film 100, and the condition that the color area is reduced or even the color of the display film cannot be lightened by applied voltage may occur. In order to extend the life of the display film 100 and enhance the sealing between the display film 100 and the case 200, a sealing film 21 may be provided to block water molecules and oxygen.

Referring to fig. 1, 13-15, in some embodiments, the housing 200 may further include an optical film 22, the optical film 22 may be disposed between the display film 100 and the cover plate 20, the optical film 22 includes a plurality of reflective layers 220, the plurality of reflective layers 220 may be configured to respectively reflect light incident from the cover plate 20 to the display film 100, and wavelengths of light reflected by different reflective layers 220 are different, so that the optical film 22 and the display film 100 cooperate to realize color display of the first pattern area 1210.

In this way, by providing the optical film 22, the color of the first pattern region 1210 may not be limited to the color displayed by the dielectric layer 13 under different electric fields, for example, when the dielectric layer 13 is electronic ink, the first pattern region 1210 may only realize the conversion between white and black, and by providing the optical film 22, after the incident light is acted by the film layers such as the optical film 22 and the dielectric layer 13, the color of the first pattern region 1210 is displayed as a color, so that the housing 200 can obtain a better appearance effect.

Specifically, the optical film 22 may be disposed between the display film 100 and the cover plate 20, further, the optical film 22 may be disposed on a side of the first substrate 110 facing away from the first electrode layer 111, a waterproof OCA (optical Clear adhesive) optical adhesive may be disposed between one side of the optical film 22 and the first substrate 110 to further enhance the waterproof performance of the display film 100, and the OCA optical adhesive may be additionally disposed between the other side of the optical film 22 and the cover plate 20 to bond the optical film 22 between the cover plate 20 and the first substrate 110.

The optical film 22 may include a plurality of reflective layers 220, or the optical film 22 may be a composite film, such as a PET film coated with an optical coating. In this embodiment, the optical film 22 used in the present embodiment belongs to a multi-layer glare optical coating, as shown in fig. 13 and 14, two materials, namely niobium oxide and silicon dioxide, may be selected as raw materials for coating, and the raw materials for coating are repeatedly and sequentially coated on the PET substrate by a sputtering coating process or an evaporation coating process to finally form a glare optical coating, and in order to achieve the adhesion of the optical film 22, a layer of zirconium dioxide is generally coated on the PET substrate to form a bottom.

Since the reflection and transmission effects of the reflection layers 220 with different thicknesses and different materials on the optical film 22 on different wavelengths of light are different, so that the transmittance and reflectance of each reflection layer 220 for each wavelength band are different, different colors can be realized by controlling the thickness design of each reflection layer 220 forming the optical film 22.

Meanwhile, the color of the optical film 22 is also related to the color of the display film 100, in this embodiment, the dielectric layer 13 is made of an electronic ink material, and when the dielectric layer 13 is white, that is, the display film 100 is white, as shown in fig. 13, the incident light is completely reflected by the display film 100 after passing through each reflective layer 220 of the optical film 22, and the final emergent light is formed by overlapping the light reflected by the display film 100 and the reflected light of each reflective layer 220 of the optical film 22, so as to form green as shown in fig. 15 (a); when the dielectric layer 13 is black, that is, when the display film 100 is a black matrix, as shown in fig. 14, the incident light is completely absorbed by the display film 100 after passing through each reflective layer 220 of the optical film 22, and the final emergent light is superimposed by only the reflected light of each reflective layer 220 of the optical film 22, so that a purple color is formed as shown in fig. 15 (b).

The different optical films 22 exhibit different colors under the black and white bases, respectively. For example, when the incident light is applied through the optical film 22 in the case of a black matrix, the final emission light is displayed in green, and when the incident light is applied through the optical film 22 in the case of a white matrix, the final emission light is displayed in violet, and when the incident light is applied through the optical film 22 in the case of a black matrix, the final emission light is displayed in blue, and when the incident light is applied through a white matrix, the final emission light is displayed in yellow.

Referring to fig. 12 again, the present application provides an electronic device 1000, where the electronic device 1000 includes the housing 200 and the processor 300 in any of the above embodiments, and the processor 300 is used to control the circuit to apply the voltage to the display film 100. In this manner, the control circuit applies a voltage to the display membrane 100 in a pattern by the processor 300, such that a color change of the housing 200 of the electronic device 1000 may be achieved, as well as a display of dynamic time on the housing 200.

Referring to fig. 16, in some embodiments, the processor 300 may be configured to control the circuit to change the voltage applied between the plurality of first pattern regions 1210 of the second electrode layer 121 and the first electrode layer 111 according to a certain timing sequence, so that the portion of the dielectric layer 13 corresponding to the plurality of first pattern regions 1210 shows different colors, so that the housing 200 displays a dynamic effect.

Specifically, since it is known that the case 200 can display the pattern of the first pattern region 1210 when the first non-pattern region 1211 and the first electrode layer 111 are both applied with the voltage opposite to the first pattern region 1210, the processor 300 control circuit changes the voltage applied between the plurality of first pattern regions 1210 of the second electrode layer 121 and the first electrode layer 111 according to a certain timing sequence, so that the voltage condition for displaying the pattern of the first pattern region 1210 on the case 200 is satisfied at the current moment, and destroys the voltage condition by changing the voltage polarity at the next moment, so that the effect of appearing and disappearing the pattern of the first pattern region 1210 can be displayed on the case 200, thereby simulating the dynamic pattern effect on the case 200 and improving the appearance expressive force of the electronic device 1000.

Referring to fig. 16, in some embodiments, the processor 300 may be configured to apply a voltage opposite to the plurality of first pattern regions 1210 to the first non-pattern region 1211 and the first electrode layer 111 at a first time so that the housing 200 displays a pattern of the plurality of first pattern regions 1210;

the processor 300 may be configured to control the circuit to apply the same voltage as applied to the first non-pattern area 1211 to the selected one or more first pattern areas 1210 at a second time, after the first time, and to simultaneously apply the opposite voltage to the first electrode layer 111 as applied to the first non-pattern area 1211 to cause the pattern of the selected first pattern area 1210 to disappear, thereby causing the housing 200 to display a dynamic effect.

In this way, the processor 300 applies voltages to the first non-pattern area 1211, the first electrode layer 111 and the first pattern area 1210 at the first time and the second time in the above manner, and the voltages on the first non-pattern area 1211, the first electrode layer 111 and the first pattern area 1210 maintain a certain polarity relationship, so that a dynamic display effect that the pattern of the specific first pattern area 1210 disappears immediately on the housing 200 can be realized.

Referring to fig. 16, in some embodiments, the first pattern area 1210 may include a plurality of time scale areas 1212, a plurality of hour hand indication areas 1213, and a plurality of minute hand indication areas 1214, and the processor 300 may be configured to select one minute hand indication area 1214 and/or one hour hand indication area 1213 after a preset time interval, and control the circuit to apply an opposite voltage to the first non-pattern area 1211 to the selected minute hand indication area 1214 and/or hour hand indication area 1213, and simultaneously apply the same voltage to the first electrode layer 111 as that applied to the first non-pattern area 1211 to display a pattern of the selected minute hand indication area 1214 and/or hour hand indication area 1213.

Thus, a dynamic display effect of the clock can be realized on the housing 200.

Specifically, how to specifically process the lines of the first electrode layer 111 and the second electrode layer 121, and how to apply voltages to the first electrode layer 111 and the second electrode layer 121 at what timing by the processor 300 to realize the clock dynamic display effect will be explained below:

the principle of displaying dynamic time implemented by the present embodiment is roughly as follows: in the fixed area of the housing 200, when the electronic device 1000 is turned on, the time zone is switched, and the time is manually modified, the processor 300 may send the current time to a service for controlling and displaying the dynamic clock inside the electronic device 1000, and then may adjust the voltages of the first electrode layer 111, the first pattern area 1210, and the first non-pattern area 1211 according to the current time, so as to display the current time on the housing 200, and at the same time, the used delay program starts to run after displaying the current time on the housing 200, so as to count the time, and refresh the time on the housing 200 every preset time, thereby achieving the effect of displaying the dynamic time.

In order to display the dynamic time effect, the second electrode layer 121 shown in fig. 1 needs to be etched first, and the etched pattern and circuit are shown in fig. 9, wherein the etching details of the pattern and circuit are shown in fig. 10. Specifically, a first non-pattern region 1211, a time scale region 1212 (which identifies twelve normally-lit time scales), and a time indication region 1215 (in this embodiment, a plurality of hour hand indication regions 1213 and a plurality of minute hand indication regions 1214 are collectively referred to as the time indication region 1215) are respectively formed on the second electrode layer 121, where the connection wires 15 of the first non-pattern region 1211 correspond to the pin B, the connection wires 15 of the time scale region 1212 converge at the pin a, the connection wires 15 of the hour hand indication regions 1213 correspond to the pins 1 to 12, the connection wires 15 of the minute hand indication regions 1214 correspond to the pins a to l, and the connection wires 15 of the first electrode layer 111 correspond to the pin C.

Therefore, the lead region P of the first electrode layer 111 and the second electrode layer 121 includes 28 leads in addition to the 27 leads mentioned above, and all the leads are arranged as shown in fig. 11.

The power-on mode in this embodiment corresponds to two operation modes in total.

The first mode of operation is to effect a solid color change: when the same voltage is applied to the pins 1 to 12, a to l, a and B and the opposite voltage is applied to the pin C, as shown in fig. 15, the color of the entire display film 100 is in the same state, for example, when the dielectric layer 13 is made of electronic ink material, the display film 100 displays white/black, and the housing 200 finally displays color, such as green/purple, under the combined action of the optical film 22; after the positive and negative electrodes of the voltage are changed, the color of the whole display film 100 is changed into black/white, and the shell 200 finally shows color, such as purple/green, under the combined action of the optical film 22, so that the whole color change effect of the shell 200 is realized.

The second working mode is to display dynamic time:

the method comprises the following steps: after the overall color of the housing 200 is refreshed to the overall same color state through the pure color changing operation mode, a voltage opposite to the initial voltage is applied to the pin a, the pin C and the pin corresponding to the hour hand indication region 1213 corresponding to the initial time obtained by processing, and at this time, the housing 200 may display the initial time synchronized with the electronic device 1000. For example, when the initial time is twelve o' clock, the voltage opposite to the initial voltage is applied to the pin a, the pin C, the pin 1 and the pin a, and the display effect of the whole housing 200 is shown as (a) in fig. 16, the background color of the housing 200 and the optical film 22 act together to show green when the display film 100 is white, the housing 200 also displays the initial time pattern, that is, the circular patterns of the hour hand display area and the minute hand display area corresponding to the pin 1 and the pin a, respectively, are displayed, and the pattern color is shown to be light purple under the action of the optical film 22;

step two: after the initial time is displayed on the housing 200, the delay program is executed synchronously, and after the delay program is executed for a predetermined number of cycles, for example, 300 seconds after one cycle is completed, the same voltage as that of the pin B is applied to the pin a being displayed, and the opposite voltage to that of the pin B is applied to the pin C, so that the color of the minute hand indication area 1214 corresponding to the pin a is the same as that of the first non-pattern area 1211, and the visual effect is represented as that the pattern of the minute hand indication area 1214 corresponding to the pin a disappears. At this time, as shown in fig. 16(b), the display effect of the whole housing 200 is shown, the background color of the housing 200 is shown as green by cooperating with the optical film 22 when the display diaphragm 100 is white, the housing 200 also displays the patterns of the time scale region 1212 and the hour hand display region corresponding to the pin 1, and the pattern color is shown as light purple by the optical film 22;

step three: then, a voltage opposite to that of the pin B is applied to the pin B, and a voltage identical to that of the pin B is applied to the pin C, so that the color of the minute hand indication region 1214 corresponding to the pin B is different from the color of the first non-pattern region 1211 corresponding to the pin B, thereby displaying the pattern corresponding to the minute hand indication region 1214. At this time, the display effect of the entire housing 200 appears as shown in fig. 16(c), and the display time on the housing 200 is twelve and zero-five.

In this way, a time transition is achieved. After the delay program is executed for twelve times, that is, after one hour is counted, the corresponding hour hand display area and minute hand display area to be displayed are simultaneously switched according to the methods described in the second step and the third step, so that the dynamic time can be displayed on the housing 200, the functionality of the electronic device 1000 is improved, and the user experience is better. The specific pattern display principle of the first pattern area 1210 has been described in detail above, and is not described herein again, and how to design the preset duration from the delay procedure will be described in detail below.

In some embodiments, the predetermined duration may be triggered by program execution. Therefore, the preset time length can be accurately recorded, and the accurate control of the display dynamic time is realized.

Specifically, in order to realize the dynamic display effect of the clock on the casing 200, after the dial pattern is designed on the second electrode layer 121, in order to realize the timing function, that is, to let the hour hand and the minute hand appear to move by a time scale in the visual effect according to the preset time interval, precise time control is required. The common method is to use hardware delay and software delay.

Software delay is more common, and can be realized by using a function with a _ NOP _ () statement in a C file. A series of different Delay functions can be defined, such as Delay10us (), Delay25us (), Delay40us () and the like are stored in a custom C file and are directly called in a main program when needed. However, this method can generally be used only for short delay, often in the order of microseconds, which is not satisfactory for this embodiment.

Then, in this embodiment, a function for implementing the delay may be programmed, where a certain I/O (Input/Output) port is set at the beginning of the function, for example, the P1.0 pin is at a high level, the high level duration may be set to be two nested for loops, where the outer loop number is set to be two times, and then the P1.0 pin is at a low level in the last clearing of the function, and the low level duration may be set to be a single-layer for loop duration, where the for loop number is consistent with the high-level middle-layer for loop number, that is, where the loop condition of the high-level middle-layer for loop is consistent with the loop condition of the low-level middle-layer for loop.

Therefore, the delay function is called in the main program in a circulating mode, the P1.0 pin is connected into the oscilloscope, the single for-circulating execution time can be determined by measuring the time difference between the high level time and the low level time on the P1.0 pin through the oscilloscope, and the single for-circulating time is multiplied by 3 to obtain the total execution time of the delay function. Then, the cycle number of the for cycle, that is, the cycle number of the high-level middle-layer cycle is adjusted, that is, the total execution time of one cycle in the delay function is adjusted to be 5 minutes.

By adopting the above delay program, the minute hand is adjusted to the next time scale once per cycle, and the hour hand is adjusted to the next time scale twice per cycle, so that accurate control of the dynamic time is finally realized, and thus the housing 200 can display the dynamic time through the display diaphragm 100.

Referring to fig. 17, a method for manufacturing a display film 100 according to an embodiment of the present disclosure includes:

step S10: providing a first base layer 11, the first base layer 11 comprising a first substrate 110 and a first electrode layer 111 disposed on the first substrate 110;

step S20: providing a second base layer 12, disposing the second base layer 12 opposite to the first base layer 11, the second base layer 12 including a second substrate 120 and a second electrode layer 121 disposed on the second substrate 120, such that a plurality of first pattern regions 1210 and a plurality of first non-pattern regions 1211 are formed on the second electrode layer 121;

step S30: a dielectric layer 13 is provided, the dielectric layer 13 is disposed between the first and

second substrates

11 and 12, and the dielectric layer 13 connects the first and

second substrates

11 and 12.

Specifically, the first substrate 110 and the second substrate 120 may be made of PET films, the first electrode layer 111 and the second electrode layer 121 may be ITO electrodes, and the first electrode layer 111 and the second electrode layer 121 are respectively plated on the first substrate 110 and the second substrate 120 to form the first base layer 11 and the second base layer 12. A plurality of first pattern regions 1210 are etched on the second electrode layer 121 with an etching line width W ranging from 10 μm to 1000 μm. The second substrate 12 is connected to the first substrate 11 through a dielectric layer 13, the dielectric layer 13 may be an electronic ink material coated on the first electrode layer 111, and the other side of the dielectric layer 13 is attached to the second electrode layer 121. Thus, the display film 100 with simple structure stacking and simple conduction mode in the application is formed, and the light-weight design requirement of the electronic device 1000 is met when the function of displaying dynamic time on the shell 200 is met.

In the description herein, references to the description of the terms "one embodiment," "certain 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 present application. In this specification, schematic representations of the above terms 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 present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A display film, comprising:

a first electrode layer;

a second electrode layer disposed opposite to the first electrode layer, the second electrode layer being formed with a plurality of first pattern regions and first non-pattern regions electrically isolated from each other; and

a dielectric layer disposed between the first electrode layer and the second electrode layer,

wherein, by changing the voltage applied between the plurality of first pattern regions of the second electrode layer and the first electrode layer at a certain time sequence, the parts of the dielectric layer corresponding to the plurality of first pattern regions exhibit different colors, so that the display film displays a dynamic effect.

2. The display film of claim 1, wherein the material of the dielectric layer comprises electronic ink, the first electrode layer is a transparent electrode layer, and the display film is capable of realizing a clock dynamic display effect through the plurality of first pattern regions.

3. The display film according to claim 1, wherein the display film displays a pattern of the first pattern region in a case where a voltage opposite to the first pattern region is applied to both the first non-pattern region and the first electrode layer.

4. The display film according to claim 1, wherein the first electrode layer is formed with a plurality of second pattern regions and second non-pattern regions, the second pattern regions are provided in one-to-one correspondence with the first pattern regions, and the display film displays the pattern of the second pattern regions when the first pattern regions and the corresponding second pattern regions are applied with opposite voltages, the first pattern regions and the first non-pattern regions are applied with opposite voltages, and the second pattern regions and the second non-pattern regions are applied with opposite voltages.

5. The display film of claim 1, wherein each of the first pattern region, the first non-pattern region and the first electrode layer is electrically connected with at least one connecting wire.

6. The display film of claim 5, wherein the first pattern area comprises a plurality of time scale areas, and all of the connecting wires connected to the plurality of time scale areas are gathered at the same pin.

7. The display film of claim 5, wherein the first pattern area comprises a plurality of hour hand indication areas, each hour hand indication area is connected with one of the connection wires, the connection wires are independently arranged, and each connection wire corresponds to one pin.

8. The display film of claim 5, wherein the first pattern area comprises a plurality of minute indication areas, each minute indication area is connected with one of the connection wires, the connection wires are independently arranged, and each connection wire corresponds to one pin.

9. A housing, comprising:

the display film of any one of claims 1-8; and

a cover plate covering the display film.

10. The housing of claim 9, wherein the housing includes a sealing membrane disposed on a side of the display membrane facing away from the cover plate.

11. The housing of claim 9, further comprising an optical film disposed between the display film and the cover plate, wherein the optical film comprises a plurality of reflective layers for respectively reflecting light incident from the cover plate to the display film, and the wavelengths of the light reflected by the different reflective layers are different, so that the optical film and the display film cooperate to realize a color display of the first pattern region.

12. An electronic device, comprising:

the housing of any one of claims 9-11; and

a processor for controlling circuitry to apply a voltage to the display membrane.

13. The electronic device of claim 12, wherein the processor is configured to control the circuit to cause the housing to display a dynamic effect by changing the voltage applied between the plurality of first pattern regions of the second electrode layer and the first electrode layer in a time sequence, and wherein the dielectric layer has a different color in a portion corresponding to the plurality of first pattern regions.

14. The electronic device of claim 13, wherein the processor is configured to control the circuit to apply a voltage opposite to the plurality of first pattern regions to both the first non-pattern region and the first electrode layer at a first time to cause the housing to display a pattern of the plurality of first pattern regions;

the processor is used for controlling the circuit to apply the same voltage applied to the first non-pattern area and the first non-pattern area to one or more selected first pattern areas at a second moment, and simultaneously apply the opposite voltage applied to the first non-pattern area and the first electrode layer, so that the pattern of the selected first pattern areas disappears, and the shell displays a dynamic effect, wherein the second moment is after the first moment.

15. The electronic device of claim 14, wherein the first pattern area comprises a plurality of time scale areas, a plurality of hour hand indication areas and a plurality of minute hand indication areas, and the processor is configured to select one of the minute hand indication areas and/or one of the hour hand indication areas after every preset time interval, and control the circuit to apply an opposite voltage to the first non-pattern area to the selected minute hand indication area and/or hour hand indication area, and simultaneously apply the same voltage to the first electrode layer as the first non-pattern area to display a pattern of the selected minute hand indication area and/or hour hand indication area.

16. The electronic device of claim 15, wherein the predetermined duration is triggered by a program run.