CN114554756A

CN114554756A - Electronic equipment, shell assembly and membrane module

Info

Publication number: CN114554756A
Application number: CN202210153053.1A
Authority: CN
Inventors: 叶万俊
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-05-27

Abstract

The application discloses an electronic device, a shell assembly and a membrane module; the membrane material module comprises a membrane, a first working medium container, a second working medium container and a micro liquid pump, wherein a patterned flow channel is formed inside the membrane; the first working medium container is connected to one side of the flow channel, and a first working medium is arranged in the first working medium container; the second working medium container is connected to the other side of the flow channel, and a second working medium is arranged in the second working medium container; the micro liquid pump is arranged between the flow channel and the second working medium container; the micro liquid pump is used for alternately discharging the first working medium and the second working medium into or out of the flow channel. Through reasonable in design's mechanical structure and runner, select suitable working medium, provide power through miniature liquid pump for the working medium is repeated from the regional flow direction that generates heat of mainboard chip all the other non-regions that generate heat, and then has reached the soaking and the effect that discolours.

Description

Electronic equipment, shell assembly and membrane module

Technical Field

The application relates to the technical field of membrane module structures, in particular to an electronic device, a shell assembly and a membrane module.

Background

With the development of communication technology, mobile terminals such as mobile phones and tablet computers have become indispensable tools for people. When a consumer faces a mobile terminal product with full-purpose of Lin Lang, not only needs to consider whether the functions of the product meet the requirements of the consumer, but also the appearance of the product is one of the important factors for the consumer to choose.

However, as the mobile terminal is iterated, the appearance of each brand of mobile terminal gradually becomes homogeneous, the appearance identification is poor, and after the mobile terminal leaves the factory, the color and the pattern of the mobile terminal are usually fixed and are prone to aesthetic fatigue for a long time. Meanwhile, as the chip of the mobile terminal generates heat seriously, the heat generated by the mainboard area is serious, and the performance of the mobile phone and the user experience are seriously influenced. Therefore, a mobile terminal housing capable of realizing dynamic appearance change and improving heat dissipation performance of a mobile phone through active control is urgently needed to be developed so as to improve the product expressive force of the mobile terminal, enrich the interaction forms of the user and the mobile terminal and improve the user experience.

Disclosure of Invention

The invention mainly solves the technical problem of providing the electronic equipment, the shell assembly and the membrane material module, which can realize the color changing effect and increase the heat dissipation through active control and improve the appearance expressive force, the heat dissipation performance and the human-computer interaction experience of the mobile terminal.

In order to solve the technical problems, the invention adopts a technical scheme that: provided is a membrane module, which includes: the device comprises a diaphragm, a first electrode and a second electrode, wherein a patterned flow channel is formed inside the diaphragm; the first working medium container is connected to one side of the flow channel, and a first working medium is arranged in the first working medium container; the second working medium container is connected to the other side of the flow channel, and a second working medium is arranged in the second working medium container; the miniature liquid pump is arranged between the flow channel and the second working medium container; the micro liquid pump is used for alternately discharging the first working medium and the second working medium into or out of the flow channel.

Another technical scheme adopted by the application is as follows: the shell assembly comprises a transparent shell and the membrane module, wherein the transparent shell is arranged on one side of the membrane module.

Another technical scheme adopted by the application is as follows: there is provided an electronic device including: the display screen module, the control circuit board and the shell assembly are arranged on the shell; the display screen module and the transparent shell form an accommodating space, the control circuit board and the membrane module are arranged in the accommodating space, and the membrane module is arranged on the inner surface of the transparent shell; the control circuit board is electrically connected with the membrane module and used for controlling the micro liquid pump, a chip is arranged on the control circuit board, and the chip is attached to the membrane module and corresponds to the flow channel of the membrane.

The invention has the beneficial effects that: different from the prior art, the invention utilizes the principle that the miniature liquid pump can pump liquid to enable the first working medium and the second working medium to flow in the designed flow channel, selects proper working medium through designing a reasonable mechanical structure and flow channel, and provides power through the miniature liquid pump. When the working medium flows through the flow channel in the membrane, the corresponding flow channel is changed from a transparent colorless state to a colored state, and then the color-changing display of the mobile terminal shell is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a schematic structural diagram of a film module with a flow channel provided in the present application;

FIG. 2 is a schematic view of a stack of an embodiment of a membrane with flow channels provided herein;

FIG. 3 is a schematic view of a lamination of another embodiment of a membrane with flow channels provided herein;

FIG. 4 is a schematic view of a stack of one embodiment of appearance layers provided herein;

FIG. 5 is a schematic view of a mobile terminal housing stack-up with a flow channel provided herein;

FIG. 6 is a schematic cross-sectional diagram of an embodiment of an electronic device provided in the present application;

FIG. 7 is a block diagram illustrating the structural components of an embodiment of the electronic device provided herein;

FIG. 8 is a schematic flow chart diagram illustrating one embodiment of a method for fabricating a diaphragm;

FIG. 9 is a schematic view of a flow channel processing of a diaphragm provided herein;

fig. 10 is a schematic diagram of a bonding process for a membrane with a flow channel provided herein.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

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

Referring to fig. 1, fig. 1 is a schematic structural diagram of a film module 132 having a flow channel 311 according to the present application. The membrane module 132 may include a membrane 300, a first working medium container 400, a second working medium container 500, and a micro-fluid pump 600. It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the embodiments of the present application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or may alternatively include other steps or elements inherent to such process, method, article, or apparatus.

Optionally, the inside of the membrane 300 is formed with a patterned flow channel 311; the first working medium container 400 and the second working medium container 500 are respectively connected to two sides of the flow channel 311 and are respectively provided with a first working medium 410 and a second working medium 510; the micro liquid pump 600 is arranged between the flow channel 311 and the second working medium container 500 and is used for alternately discharging the first working medium 410 and the second working medium 510 into or out of the flow channel 311; wherein, the first working medium 410 and the second working medium 510 are immiscible with each other. In this embodiment, after the micro liquid 600 is started, the first working medium 410 flows downward from the first working medium container 400 above the membrane 300, and is finally injected into the second working medium container 500 below the membrane 300, and the second working medium container 500 gradually expands until the first working medium 410 in the flow channel 311 is completely evacuated; at this time, the micro liquid pump 600 starts to do work reversely, so that the first working medium 410 in the second working medium container 500 is injected into the first working medium container 400 above through the flow channel 311 again, and the second working medium 510 is filled in the flow channel 311 until dynamic balance is achieved. The first working medium 410 and the second working medium 510 are alternately discharged into or out of the flow channel 311 by the micro liquid pump 600, thereby achieving the effect of dynamic patterns.

Referring to fig. 2, fig. 2 is a schematic diagram illustrating a lamination of an embodiment of a diaphragm 300 having a flow channel 211. The membrane 300 may include a substrate 310 and a cover plate 320 stacked in sequence, wherein a patterned groove is formed on a surface of the substrate 310, and the cover plate 320 is covered in the groove to form the flow channel 311. Optionally, in this embodiment, the base plate 310 and the cover plate 320 are made of transparent resin materials, so that when the liquid working medium flows through the flow channel 311, the color of the liquid working medium can be seen, thereby achieving dynamic change of the overall pattern. In some embodiments, the material of the substrate 310 may be PDMS (Polydimethylsiloxane); the material of the cover plate 320 may be PDMS, PET (polyethylene terephthalate, PET or PEIT, commonly called polyester resin, a polycondensate of terephthalic acid and ethylene glycol), PMMA (poly (methyl methacrylate), PMMA for short), PC (Polycarbonate, PC for short, a high polymer containing carbonate in its molecular chain), PI (Polyimide), and the like. Further material types for the membrane 300 are not listed and detailed herein within the understanding of those skilled in the art.

Referring to fig. 3 and 4, fig. 3 is a schematic diagram of a lamination of another embodiment of a membrane 300 with a flow channel 311 provided in the present application; fig. 4 is a schematic lamination diagram of an embodiment of an appearance layer 800 provided herein. The membrane 300 may include an appearance layer 800, an optical adhesive 700, a substrate 310, and a cover plate 320, which are sequentially stacked; the appearance layer 800 is adhered to the surface of the substrate 310 by the optical adhesive 700. Alternatively, the appearance layer 800 may include a texture film layer 810, an optical coating layer 820, an ink layer 830, etc., which are not particularly limited herein. In this embodiment, the appearance layer 800 includes an ink layer 830, an optical coating layer 820, and a texture film layer 810, which are sequentially stacked; when the whole membrane 300 is colorless and transparent, the housing assembly 130 shows the laminating effect of the ink layer 830, the optical coating layer 820 and the texture film layer 810. Specifically, in other embodiments, the appearance layer 800 may also be made of any one or a combination of a texture film layer 810, an optical coating layer 820, an ink layer 830, and the like.

Optionally, in this embodiment, the first working medium container 400 and the second working medium container 500 may be made of an elastic material, so as to form an accommodating chamber with elastic contraction and expansion, and the opening of the first working medium container 400 and the second working medium container 500 connected to the flow passage 311 is small. When the micro liquid pump 600 is not started, the liquid working medium can not flow out of the working medium container; in addition, in some other embodiments, pressure valves may be disposed at positions where the first working medium container 400 and the second working medium container 500 are connected to the flow passage 311, and may be opened when a certain pressure is reached. When the micro liquid pump 600 is started, the first working medium 410 flows downwards from the first working medium container 400 above the membrane 300, and is finally injected into the second working medium container 500 below the membrane 300, and the second working medium container 500 gradually expands until the first working medium 410 in the flow channel 311 is completely evacuated; when the micro liquid pump 600 stops working, the second working medium container 500 at the lower part will recover under the action of the elastic force, and at this time, the liquid working medium in the second working medium container 500 will be injected into the first working medium container 400 at the upper part again through the flow passage 311 until reaching the dynamic balance.

Alternatively, the first working medium 410 may be a colored liquid and may change color with a change in temperature, and the second working medium 510 may be a gas or a transparent resin oil. The first working medium 410 and the second working medium 510 are immiscible with each other, and the difference between the wettability of the two working mediums and the wall of the flow channel 311 is large, one working medium can completely push the other working medium, and basically no residue exists, and even if a small amount of residue exists, the display effect is not affected. In this embodiment, the first working medium 410 may be a red aqueous solution, the second working medium 510 may be methyl silicone oil, and the flow channel 311 is also filled with methyl silicone oil. Since the membrane 300 and the transparent shell 131 are both in a colorless and transparent state, and the width and depth of the flow channel 311 are both between 50-200 μm, when the flow channel 311 is filled with methyl silicone oil, the whole membrane 300 is in a colorless and transparent state, and at this time, only the effect of the bottom texture film layer 810 is shown on the shell assembly 130. When the micropump 600 is started, the red aqueous solution flows downwards from the first working medium container 400 above the membrane 300, and pushes the methyl silicone oil in the flow channel 311 to flow to the second working medium container 500, and finally the methyl silicone oil is injected into the second working medium container 500 below the membrane 300, and the second working medium container 500 gradually expands until the first working medium 410 in the flow channel 311 is completely pumped out; when the micropump 600 stops working, the second working medium container 500 below recovers under the action of the elastic force, at this time, the red aqueous solution in the second working medium container 500 is injected into the first working medium container 400 above through the flow channel 311 again, and the methyl silicone oil is also injected into the flow channel 311 again until the dynamic balance is achieved. When the red aqueous solution flows through the flow channel 311, a red flow channel 311 pattern is displayed on the housing assembly 130, so that a color change effect is achieved, and the appearance expressive force of the mobile terminal can be improved.

In another embodiment, first working fluid 410 is a red aqueous solution and second working fluid 510 is a colorless gas. Since the membrane 300 and the transparent shell 131 are both in a colorless and transparent state, and the width and depth of the flow channel 311 are both between 50-200 μm, when the flow channel 311 is filled with colorless gas, the whole membrane 300 is in a colorless and transparent state, and at this time, only the effect of the bottom texture film layer 810 is shown on the shell assembly 130. When the micro liquid pump 600 is started, the red water solution flows downwards from the first working medium container 400 above the membrane 300, and is finally injected into the second working medium container 500 below the membrane 300, and the second working medium container 500 gradually expands until the red water solution in the flow channel 311 is completely pumped out; when the micropump 600 stops working, the lower second working medium container 500 recovers under the action of the elastic force, and at this time, the red aqueous solution in the second working medium container 500 is injected into the upper first working medium container 400 again through the flow channel 311 until dynamic balance is achieved. When the red aqueous solution flows through the flow channel 311, a red flow channel 311 pattern is displayed on the housing assembly 130, so that a color change effect is achieved, and the appearance expressive force of the mobile terminal can be improved.

In addition, the embodiment of the present application further provides a housing assembly 130; it should be noted that the housing assembly 130 in the present application may be used for the electronic device 100, and the electronic device 100 may include a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like. The housing assembly 130 in this embodiment may include a transparent housing 131 and the film module 132 in the previous embodiments. The transparent shell 131 is adhered to the surface of the film module 132.

Referring to fig. 5, fig. 5 is a schematic diagram of a mobile terminal housing with a flow channel 311 according to the present application. The laminated structure may include an appearance layer 800, an optical cement 700, a substrate 310, a cover plate 320, an optical cement 700, and a transparent case 131, which are sequentially laminated. The transparent casing 131 may be bonded to the membrane 300 by an optical adhesive 700. The material of the transparent case 131 may be glass, transparent resin, or the like. In addition, the transparent housing 131 itself may also be subjected to rubbing, etching, electroplating, etc. to form an appearance effect, and the detailed features of this part will not be described in detail here. Optionally, the water vapor transmittance of the selected optical adhesive 700 is required to be no more than 10 g/m/day, and may be epoxy glue or acrylic glue. The thickness of the optical cement 700 may be 25um and the interlayer drawing force is greater than 16N/25 mm.

In the present embodiment, the flow channel 311 is patterned to distribute a large portion of the housing assembly 130. Because chip 121 of mobile terminal generates heat seriously, lead to the mainboard region to generate heat seriously, seriously influence mobile terminal performance and user experience, and when chip 121 region is pressed close to runner 311, the higher heat near chip 121 can be taken away to other regions in the flow of working medium in runner 311, and then realize soaking and radiating effect.

Further, an electronic device 100 is further provided in an embodiment of the present application, please refer to fig. 6, where fig. 6 is a schematic cross-sectional structure diagram of an embodiment of the electronic device 100 in the present application, and the electronic device 100 in the present embodiment may include a display module 110, a housing assembly 130, and a control circuit board 120. The housing assembly 130 may include a film module 132, a transparent housing 131, and a middle frame 133. It should be noted that, the embodiment of the present application is only described in a structure that the electronic device 100 includes the middle frame 133, and in some other embodiments, the electronic device 100 may not include the middle frame 133, and the transparent housing 131 of the housing assembly 130 directly cooperates with the display module 110, which is not limited herein.

Optionally, the display screen module 110, the film module 132 of the housing assembly 130, and the transparent housing 131 are respectively disposed on two opposite sides of the middle frame 133. The display screen module 110 and the transparent shell 131 form an accommodating space 200, the control circuit board 120 and the film material module 132 are disposed in the accommodating space 200, and the film material module 132 is disposed on the inner surface of the transparent shell 132. The control circuit board 120 is electrically connected to the film module 132 and is used for controlling the micro-fluid pump 600. Detailed technical features regarding the structure of other parts of the electronic device 100 are within the understanding of those skilled in the art and will not be described herein.

Optionally, a chip 121 (refer to fig. 1 continuously) is disposed on the control circuit board 120, the chip 121 is attached to the film module 132 and disposed corresponding to the runner 311 of the film 300, and when the working medium flows through the runner 311 corresponding to the attachment region of the chip 121, the heat in the region is taken away, so as to achieve a soaking effect. In this embodiment, after the micro liquid pump 600 is controlled by the control circuit board 120 to start, the micro liquid pump 600 pumps the first working medium 410 out of the first working medium container 400, and injects the original second working medium 510 in the flow channel 311 into the second working medium container 500. After the second working medium 510 completely enters the second working medium container 500, the first working medium 410 also starts to enter the second working medium container 500, and the second working medium container 500 gradually expands until the first working medium 410 in the flow channel 311 is completely injected into the second working medium container 500 under the action of the micro liquid pump 600. At this time, the micro liquid pump 600 stops working under the control of the control circuit board 120, the second working medium container 500 recovers under the action of the elastic force, and the first working medium 410 in the second working medium container 500 is injected into the first working medium container 400 above through the flow channel 311 again until dynamic balance is achieved.

Because the diaphragm 300 and the transparent shell 131 are both in a colorless transparent state and the size of the flow channel 311 is small, when no working medium exists in the flow channel 311, the whole diaphragm 300 is in a colorless transparent state, and at the moment, the effect of only the bottom texture film layer 810 is displayed on the mobile phone battery cover; when the micro liquid pump 600 charges the colored working medium into the flow channel 311, the flow channel 311 will present the color of the liquid working medium, and at this time, the structure of the flow channel 311 will be displayed on the battery cover, thereby realizing the dynamic display of the pattern on the battery cover. When the fluid working medium flows through the chip 121, a part of heat is taken away to other areas, so that the heat is uniformly distributed and dissipated.

Referring to fig. 7, fig. 7 is a block diagram illustrating a structural composition of an embodiment of an electronic device 100 provided in the present application, where the electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like, and the embodiment illustrates a mobile phone as an example. The electronic device 100 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (i.e., the display module 110, the sensor 950, the audio circuit 960, the wifi module 970, the processor 980 (which may be the control circuit board 120 in the foregoing embodiments), a power supply 990, and the like, wherein the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960, and the wifi module 970 are respectively connected to the processor 980, and the power supply 990 is used for supplying power to the whole electronic device 100.

Specifically, the RF circuit 910 is used for transmitting and receiving signals; the memory 920 is used for storing data instruction information; the input unit 930 is used for inputting information, and may specifically include a touch panel 931 and other input devices 932 such as operation keys; the display unit 940 may include a display panel 941; the sensor 950 includes an infrared sensor, a laser sensor, etc. for detecting a user approach signal, a distance signal, etc.; a speaker 961 and a microphone 962 are connected to the processor 980 through the audio circuit 960 for emitting and receiving sound signals; the wifi module 970 is used for receiving and transmitting wifi signals, and the processor 980 is used for processing data information of the electronic device 100. For specific structural features of the electronic device 100, please refer to the related description of the above embodiments, and detailed descriptions thereof will not be provided herein.

The electronic device 100 in this embodiment has an appearance effect of variable colors. When the micro liquid pump 600 fills the colored working medium into the flow channel 311, the film material module 132 in the structure of the shell assembly 130 displays the color of the liquid working medium in the flow channel 311, and the structure of the flow channel 311 is displayed on the battery cover, so that the dynamic display of the patterns on the battery cover is realized. Meanwhile, when the liquid working medium flows through the chip 121, a part of heat is taken away to other areas, and then the heat soaking and radiating effects are achieved.

Further, the embodiment of the present application also provides a manufacturing method of the diaphragm 300. Referring to fig. 8-10, fig. 8 is a schematic flow chart illustrating a method for manufacturing a diaphragm 300 according to an embodiment of the present disclosure;

fig. 9 is a schematic view of a process for fabricating a flow channel 311 of a diaphragm 300 according to the present disclosure; fig. 10 is a schematic diagram of a bonding process of a membrane 300 having a flow channel 311 provided herein. FIG. 9 corresponds to steps S11-S13 in FIG. 8, and FIG. 10 corresponds to steps S14-S15 in FIG. 8. The manufacturing method in this embodiment includes, but is not limited to, the following steps.

Step S11, a layer of optical cement 700 is drawn on the substrate.

In step S12, the mask designed with the flow channel 311 is used to perform exposure and etching, so that only the optical glue 700 corresponding to the flow channel 311 is left on the substrate.

And step S13, coating a layer of liquid PDMS on the substrate, and curing and separating.

In step S14, Plasma treatment is performed on the surface of the flow channel 311 on the PDMS film and the bonding surface of the PET film.

In this embodiment, the PDMS film and the PET film are subjected to Plasma treatment, and cleaning, activation, modification, and etching of a whole, a part, and a complex structure can be realized.

And step S15, bonding the PDMS film and the PET film, and baking in an oven at 75-85 ℃ for 50-70 min.

The invention mainly relates to a design scheme of a mobile terminal shell capable of realizing color change display of patterns and increasing heat dissipation function. The technical principle of the scheme is that the micro liquid pump 600 can pump liquid, so that liquid working media flow in the designed flow channel 311. Through a reasonable mechanical structure and a flow passage 311, a proper working medium is selected, and the micro liquid pump 600 provides power, so that the liquid working medium flows to the rest non-heating areas of the battery cover from the heating area of the mainboard chip 121, the heat generated in the area of the mainboard chip 121 is conveyed to other areas with lower temperature, the homogenization of the temperature of the rear cover is realized, and the better heat dissipation effect is realized finally; meanwhile, the first working medium 410 has a certain color, so that when the first working medium 410 flows through, the corresponding flow channel 311 is changed from a transparent colorless state to a colored state, and then the color change display of the rear cover is realized.

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

Claims

1. A membrane module, comprising:

the device comprises a diaphragm, a first electrode and a second electrode, wherein a patterned flow channel is formed inside the diaphragm;

the first working medium container is connected to one side of the flow channel, and a first working medium is arranged in the first working medium container;

the second working medium container is connected to the other side of the flow channel, and a second working medium is arranged in the second working medium container; and

the miniature liquid pump is arranged between the flow channel and the second working medium container;

the micro liquid pump is used for alternately discharging the first working medium and the second working medium into or out of the flow channel.

2. The membrane module of claim 1, wherein the membrane comprises a substrate and a cover plate, wherein a surface of the substrate is provided with a patterned groove, and the cover plate is covered on the groove to form the flow channel.

3. The film module of claim 2, wherein the base plate and the cover plate are both made of a transparent resin material.

4. The film module of claim 3, wherein the substrate is made of PDMS, and the cover plate is made of any one of PDMS, PET, PMMA, PC and PI.

5. The membrane module according to claim 1 or 2, wherein the width and depth of the flow channel are both 50-200 μm.

6. The membrane module of claim 1, wherein the first working medium receiver and the second working medium receiver are both made of an elastic material, forming a receiving chamber capable of elastically contracting and expanding.

7. The membrane module of claim 1, wherein the first working medium is a colored liquid and the second working medium is a gas or a transparent resin oil.

8. The membrane module of claim 7, wherein the first working medium is discolorable with temperature change, and the second working medium is methyl silicone oil.

9. A shell assembly, which is characterized by comprising a transparent shell and the membrane module set of any one of claims 1 to 8, wherein the transparent shell is arranged on one side of the membrane module set.

10. An electronic device, comprising a display screen module, a control circuit board, and the housing assembly of claim 9;

the display screen module and the transparent shell form an accommodating space, the control circuit board and the membrane module are arranged in the accommodating space, and the membrane module is arranged on the inner surface of the transparent shell;

the control circuit board is electrically connected with the membrane module and used for controlling the micro liquid pump, a chip is arranged on the control circuit board, and the chip is attached to the membrane module and corresponds to the flow channel of the membrane.