Folding screen and mobile equipment

Abstract

The utility model discloses a folding screen and mobile equipment, and the folding screen comprises a first display part and a second display part which are movably connected, so that the folding screen has a folding state and an unfolding state; the folding screen further comprises a power generation assembly and an energy storage assembly. The power generation assembly comprises a first friction layer, a second friction layer and a conductive part, the first friction layer is arranged on the first display part, the second friction layer is arranged on the second display part, and when the folding screen is switched between a folding state and an unfolding state, the first friction layer and the second friction layer are switched between a physical contact state and a separation state; the conductive part generates inductive charges and an electrostatic field, is located in the electrostatic field, is in electrical contact with the first friction layer and / or the second friction layer and is used for collecting induced current; the energy storage assembly comprises a battery and a transmission assembly, and the transmission assembly is electrically connected with the battery and the conductive part and used for transmitting induced current and charging the battery.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a folding screen and a mobile device. Background Art

[0002] With the update and iteration of mobile devices, users' performance requirements for mobile devices are gradually being met. As the user experience is rapidly improving, the power consumption of mobile devices is also increasing. Take mobile phones as an example. The capacity of mobile phone batteries is getting bigger and bigger, but the battery life has not been greatly improved. Especially for foldable screen phones, the battery life is shorter than that of straight screen phones, which brings inconvenience to users when traveling. Utility Model Content

[0003] The embodiments of the present application provide a folding screen and a mobile device, which can convert mechanical energy into electrical energy by folding and unfolding a first display portion and a second display portion, thereby improving the battery life of the mobile device.

[0004] In a first aspect, an embodiment of the present application provides a folding screen, the folding screen comprising a first display portion and a second display portion movably connected so that the folding screen has a folded state and an unfolded state;

[0005] The folding screen also includes:

[0006] A power generation component, the power generation component includes a first friction layer, a second friction layer and a conductive component, the first friction layer is arranged on the first display part, the second friction layer is arranged on the second display part, when the folding screen switches between the folding state and the unfolding state, the first friction layer and the second friction layer switch between physical contact and separation states, generating induced charges and electrostatic fields, the conductive component is in the electrostatic field and is in electrical contact with the first friction layer and / or the second friction layer to collect induced current; and,

[0007] The energy storage component includes a battery and a transmission component. The transmission component electrically connects the battery and the conductive component to transmit the induced current and charge the battery.

[0008] In one embodiment, the material of the first friction layer includes one of polyethylene terephthalate, polymethyl methacrylate and nitrile rubber;

[0009] The material of the second friction layer includes polyimide or silicone.

[0010] In one embodiment, the folding screen further includes a flexible glass cover plate, wherein the flexible glass cover plate is disposed on the first friction layer and the second friction layer and covers the first display portion and the second display portion;

[0011] Wherein, the thickness of the flexible glass cover is set to ≤0.1 mm.

[0012] In one embodiment, the conductive component comprises:

[0013] A first electrode layer, wherein the first electrode layer is disposed on the first display portion; and

[0014] a second electrode layer, wherein the second electrode layer is disposed on the second display portion;

[0015] Wherein, the first friction layer is disposed on the first electrode layer and is in electrical contact with the first electrode layer;

[0016] The second friction layer is disposed on the second electrode layer and is in electrical contact with the second electrode layer;

[0017] The transmission component is electrically connected to the first electrode layer, the second electrode layer and the battery.

[0018] In one embodiment, the peripheral edge of the first electrode layer is arranged flush with the peripheral edge of the first display portion;

[0019] The peripheral edge of the second electrode layer is arranged flush with the peripheral edge of the second display portion.

[0020] In one embodiment, the conductive component comprises an inductive conductor, wherein:

[0021] The induction conductor is disposed on the first display portion and is arranged side by side with the first friction layer and spaced apart from each other, and the induction conductor is electrically connected to the first friction layer through a metal wiring, or;

[0022] The induction conductor is disposed on the second display portion and is arranged side by side with the second friction layer and spaced apart from each other, and the induction conductor is electrically connected to the second friction layer through a metal wiring;

[0023] The transmission component is electrically connected to the induction conductor and the battery.

[0024] In one embodiment, at least one edge of the first friction layer facing the second friction layer is indented compared to an edge of the first display portion;

[0025] At least one edge of the second friction layer facing the first friction layer is indented compared to an edge of the second display portion.

[0026] In one embodiment, the area ratio of the first friction layer and the first display portion is greater than 90%;

[0027] The area of ​​the second friction layer and the second display portion accounts for more than 90%.

[0028] In one embodiment, the area of ​​the first friction layer is the same as the area of ​​the second friction layer;

[0029] When the folding screen is in the folded state, the first friction layer and the second friction layer completely overlap.

[0030] In a second aspect, an embodiment of the present application further provides a mobile device, the mobile device comprising:

[0031] The folding screen as described above; and

[0032] A battery, wherein the battery is electrically connected to a transmission component of the folding screen.

[0033] Beneficial effect: In the folding screen provided by the present application, through the contact friction between the first friction layer and the second friction layer, according to the principle of friction electrification, the surfaces where the first friction layer and the second friction layer contact each other will generate induced charges, and the first friction layer and the second friction layer will generate an electrostatic field. Since the conductive component is in the electrostatic field and is in electrical contact with the first friction layer and / or the second friction layer, the charges in the conductive component move under the drive of the electrostatic field, thereby generating an induced current, and charging the battery through the transmission component; and it can be known that as the distance between the first friction layer and the second friction layer increases, the potential difference between the first friction layer and the second friction layer increases accordingly, thereby further enhancing the generated induced current; that is, during the entire unfolding state of the folding screen, the power generation component can continuously charge the battery through the transmission component, thereby realizing the conversion of mechanical energy into electrical energy through the friction between the first display part and the second display part, thereby improving the battery life of the mobile device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0035] Figure 1 A schematic diagram of the first structure of a folding screen (in unfolded state) provided in an embodiment of the present application;

[0036] Figure 2 for Figure 1 A schematic diagram of a first structure of a folding screen (folded state) in FIG.

[0037] Figure 3 for Figure 1 The first power generation flow chart of the folding screen;

[0038] Figure 4 for Figure 1 The first production flow chart of the folding screen;

[0039] Figure 5 A second structural schematic diagram of a folding screen (in unfolded state) provided in an embodiment of the present application;

[0040] Figure 6 for Figure 5 A second structural diagram of a folding screen (folded state) in FIG.

[0041] Figure 7 for Figure 5 The second power generation flow chart of the folding screen;

[0042] Figure 8 for Figure 5 The second production flow chart of the folding screen;

[0043] Fig. 9 A schematic diagram of the charging structure of the folding screen provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature merely means that the first feature is higher in level than the second feature or that the first feature is lower in level than the second feature, and does not indicate a direct connection relationship.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only, and the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense without specifically limiting the connection method. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] The disclosure below provides many different embodiments to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0049] The embodiments of the present application provide a folding screen and a mobile device. The present application does not limit the specific form of the mobile device, and the mobile device can be a mobile display device such as a mobile phone, a tablet, and a laptop computer.

[0050] In a first aspect, an embodiment of the present application provides a folding screen 100. Figure 1 and Figure 5 The folding screen 100 includes a first display part 1 and a second display part 2 that are movably connected, so that the folding screen 100 has a folding state a and an unfolding state b; the folding screen 100 also includes a power generation component 3 and an energy storage component 4; the power generation component 3 includes a first friction layer 31, a second friction layer 32 and a conductive component 33, the first friction layer 31 is arranged on the first display part 1, and the second friction layer 32 is arranged on the second display part 2. When the folding screen 100 switches between the folding state a and the unfolding state b, the first friction layer 31 and the second friction layer 32 correspondingly switch between physical contact and separation states to generate induced charges and electrostatic fields, and the conductive component 33 is in the electrostatic field and is electrically in contact with the first friction layer 31 and / or the second friction layer 32 to collect induced current; the energy storage component 4 includes a battery 41 and a transmission component 42, and the transmission component 42 is electrically connected to the conductive component 33 and the battery 41 to transmit the induced current and charge the battery 41.

[0051] In the folding screen 100 provided in the present application, a first friction layer 31 is provided on the first display part 1, and a second friction layer 32 is provided on the second display part 2. When the folding screen 100 switches between the folded state a and the unfolded state b, the first friction layer 31 and the second friction layer 32 switch between contact and separation respectively; according to the principle of friction electrification, when the first friction layer 31 and the second friction layer 32 switch from contact to separation, the surfaces of the first friction layer 31 and the second friction layer 32 in contact with each other will generate induced charges, and the first friction layer 31 and the second friction layer 32 will generate an electrostatic field. Since the conductive component 33 is in the electrostatic field and is in electrical contact with the first friction layer 31 and / or the second friction layer 32, the charges in the conductive component 33 move under the drive of the electrostatic field, thereby generating an induced current; the induced current is transmitted to the battery 41 through the transmission component 42, thereby charging the battery 41.

[0052] It can also be known that during the process of separating and unfolding the first display part 1 and the second display part 2, the distance between the first friction layer 31 and the second friction layer 32 gradually increases; as the distance between the first friction layer 31 and the second friction layer 32 becomes farther and farther, the potential difference between the first friction layer 31 and the second friction layer 32 increases accordingly, thereby further enhancing the generated induced current; that is, during the entire unfolding state b of the folding screen 100, the power generation component 3 can continuously charge the battery 41 through the transmission component 42, and convert mechanical energy into electrical energy through the friction between the first display part 1 and the second display part 2, thereby improving the battery life of the mobile device.

[0053] It should be noted that the present application does not impose any specific restrictions on the locations of the first friction layer 31 and the second friction layer 32. When the first display unit 1 and the second display unit 2 are in the folded state a, when the display fronts of the first display unit 1 and the second display unit 2 are in contact with each other, the first friction layer 31 and the second friction layer 32 are arranged on the display fronts of the first display unit 1 and the second display unit 2; when the non-display backs of the first display unit 1 and the second display unit 2 are in contact with each other, the first friction layer 31 and the second friction layer 32 are arranged on the non-display backs of the first display unit 1 and the second display unit 2. The specific location is adjusted according to the actual product.

[0054] The present application does not specifically limit the forms of the first friction layer 31 and the second film friction layer. In one embodiment, the first friction layer 31 is configured as a positive electrode friction layer, and the material of the first friction layer 31 includes one of polyethylene terephthalate, polymethyl methacrylate and nitrile rubber; the second friction layer 32 is configured as a negative electrode friction layer, and the material of the second friction layer 32 includes polyimide or silicone.

[0055] See also Figures 1 to 3 In the first embodiment of the present application, the conductive component 33 includes a first electrode layer 331 and a second electrode layer 332; the first electrode layer 331 is arranged on the first display part 1; the second electrode layer 332 is arranged on the second display part 2; wherein the first friction layer 31 is arranged on the first electrode layer 331 and is electrically in contact with the first electrode layer 331; the second friction layer 32 is arranged on the second electrode layer 332 and is electrically in contact with the second electrode layer 332; the transmission component 42 is electrically connected to the first electrode layer 331, the second electrode layer 332 and the battery 41.

[0056] The material of the first friction layer 31 is set to PET (full name in English: polyethylene terephthalate, Chinese abbreviation: polyethylene terephthalate) or PMMA (full name in English: Polymethyl Methacrylate, Chinese abbreviation: polymethyl methacrylate); the first friction layer 31 is set to be a positive electrode friction layer; the material of the second friction layer 32 is set to PI (full name in English: Polyimide, Chinese abbreviation: polyimide), and the second friction layer 32 is set to be a negative electrode friction layer.

[0057] It is known that PI is mostly a long-chain polymer with an alternating arrangement of imide rings and benzene rings in the main chain. From a structural perspective, the imide ring is a planar symmetrical ring structure with a normal stretched bond length and bond angle, so it is highly stable in thermodynamics; and the rigid, straight chain and conjugated molecular structure strengthen the orderly arrangement of the molecular chain and the interaction between the molecular chains, making PI have high mechanical strength and outstanding heat resistance. In addition, due to the electron-withdrawing properties of the imide group, PI generally has a strong electron-withdrawing ability and can provide a large number of charge capture sites.

[0058] Please read further Figure 3When the first friction layer 31 and the second friction layer 32 are in contact, charge transfer will occur on the contact surface of the first friction layer 31 and the second friction layer 32. Due to the electron-withdrawing property of PI, the first friction layer 31 loses electrons, and the contact surface of the first friction layer 31 is positively charged, and the second friction layer 32 gains electrons, and the contact surface of the second friction layer 32 is negatively charged.

[0059] When the first friction layer 31 and the second friction layer 32 are separated, charge transfer occurs between the first friction layer 31 and the first electrode layer 331 that are in contact with each other, and the first electrode layer 331 is negatively charged; charge transfer occurs between the second friction layer 32 and the second electrode layer 332 that are in contact with each other, and the second electrode layer 332 is positively charged, so that there is a potential difference between the first electrode layer 331 and the second electrode layer 332, thereby driving the charge flow in the external circuit to generate current.

[0060] In one embodiment of the present application, the peripheral edge of the first electrode layer 331 is flush with the peripheral edge of the first display portion 1 ; the peripheral edge of the second electrode layer 332 is flush with the peripheral edge of the second display portion 2 .

[0061] See also Figure 4 In the first embodiment, the manufacturing method of the power generation component 3 is as follows: the first electrode layer 331 is set on the first display part 1, and the second electrode layer 332 is set on the second display part 2; the first friction layer 31 is set on the first electrode layer 331, and the second friction layer 32 is set on the second electrode layer 332.

[0062] See also Figures 5 to 7 In a second embodiment of the present application, the conductive component 33 includes an induction conductor 333, wherein: the induction conductor 333 is arranged on the first display portion 1 and is arranged side by side with the first friction layer 31, and the induction conductor 333 is electrically connected to the first friction layer 31 through a metal wiring, or; the induction conductor 333 is arranged on the second display portion 2 and is arranged side by side with the second friction layer 32, and the induction conductor 333 is electrically connected to the second friction layer 32 through a metal wiring; the transmission component 42 is electrically connected to the induction conductor 333 and the battery 41.

[0063] The material of the first friction layer 31 is set to nitrile rubber; the first friction layer 31 is set to be a positive friction layer; the material of the second friction layer 32 is set to silicone, and the second friction layer 32 is set to be a negative friction layer.

[0064] Please read further Figure 7Since nitrile rubber and silicone have greatly different electronegativity, when the first friction layer 31 contacts the second friction layer 32, equal amounts of opposite charges are gathered on the contact surface between the first friction layer 31 and the second friction layer 32. At this time, the first friction layer 31 and the second friction layer 32 are electrically neutral, and the surface of the induction conductor 333 cannot generate an electrical signal.

[0065] During the separation of the first friction layer 31 and the second friction layer 32, the contact surface of the nitrile rubber loses electrons, thereby making the first friction layer 31 positively charged, and the contact surface of the silicone rubber gains electrons, thereby making the second friction layer 32 negatively charged; the positive charge of the first friction layer 31 generates a positive electrostatic field, and the negative charge of the second friction layer 32 generates a negative electrostatic field. In some cases, the induction conductor 333 is in the electrostatic field of the first friction layer 31 and is in electrical contact with the first friction layer 31. The charges in the induction conductor 333 will move according to the electric field properties of the electrostatic field. At this time, a potential difference is generated between the surface of the induction conductor 333 and the ground, and the potential on the surface of the induction conductor 333 is higher than the potential on the ground. The charges on the surface of the induction conductor 333 will flow toward the ground to achieve electrostatic balance, and a positive induced current will also be generated.

[0066] It can also be known that, in the process of separation of the first friction layer 31 and the second friction layer 32, as the distance between the first friction layer 31 and the second friction layer 32 becomes farther and farther, the potential difference between the first friction layer 31 and the second friction layer 32 becomes larger, and the induced charges attached to the surfaces of the first friction layer 31 and the second friction layer 32 are further increased, thereby further enhancing the electric field strength of the electrostatic field, further enhancing the electrostatic induction effect on the induction conductor 333, and further enhancing the induced current, and in the process of the folding screen 100 gradually unfolding, the power generation component 3 can continuously charge the battery 41, thereby improving the charging effect.

[0067] When the first display part 1 and the second display part 2 are close to each other, the first friction layer 31 and the second friction layer 32 are in the process of gradually folding. At this time, the distance between the first friction layer 31 and the second friction layer 32 is gradually reduced, and the potential difference between the first friction layer 31 and the second friction layer 32 is reduced accordingly. The induced charges attached to the surfaces of the first friction layer 31 and the second friction layer 32 are reduced, so that the electric field strength of the electrostatic field is weakened, and the electrostatic induction effect of the induction conductor 333 is weakened. At this time, the potential of the ground end is higher than the potential of the conductor surface, and the charge will flow back from the ground end to the induction conductor 333, and a negative induced current will also be generated. When the first friction layer 31 and the second friction layer 32 are in the folded state a, the induction conductor 333 returns to the initial state, and the charging component stops charging.

[0068] It can be understood that in the second embodiment of the present application, due to the material characteristics of the first friction layer 31 and the second friction layer 32, in order to protect the first friction layer 31 and the second friction layer 32, the folding screen 100 can also be provided with a flexible glass cover plate 5, the flexible glass cover plate 5 is arranged on the first friction layer 31 and the second friction layer 32, and covers the first display part 1, the second display part 2 and the bending part; wherein, the thickness of the flexible glass cover plate 5 is set to ≤0.1mm. By covering the flexible glass cover plate 5 on the first friction layer 31 and the second friction layer 32, the first friction layer 31 and the second friction layer 32 can be protected, and the service life of the power generation component 3 can be extended; at the same time, since the thickness of the flexible glass cover plate 5 is set to ≤0.1mm, that is, the flexible glass cover plate 5 adopts UTG (English full name: Ultra Thin Glass, Chinese abbreviation: ultra-thin flexible glass), so the flexible glass cover plate 5 will not affect the triboelectric charging of the first friction layer 31 and the second friction layer 32, and the flexible glass cover plate 5 is also an excellent dielectric.

[0069] See also Figure 8 In the second embodiment, the manufacturing method of the power generation component 3 is as follows: the first friction layer 31 is manufactured on the first display part 1; the second friction layer 32 is manufactured on the second display part 2; the induction conductor 333 is arranged on the first display part 1, or the induction conductor 333 is arranged on the second display part 2; the flexible glass cover plate 5 is arranged on the first friction layer 31 and the second friction layer 32, and the flexible glass cover plate 5 covers the first display part 1 and the second display part 2.

[0070] It should be noted that the above-mentioned first embodiment and second embodiment are merely two specific implementations of the present application; the present application may also have other implementations. For example, the conductive component 33 in the first embodiment may be set as an induction conductor 333, and the conductive component 33 in the second embodiment may be set as two electrode layers, and no specific limitation is made here.

[0071] Furthermore, the present application does not make any specific requirements on the material of the conductive component 33. For example, in the first embodiment, the material of the first electrode layer 331 and the second electrode layer 332 is set to ITO (conductive glass). In the second embodiment, the material of the sensing conductor 333 can be set to a conductive metal such as aluminum or copper.

[0072] It can be understood that at the moment when the first friction layer 31 and the second friction layer 32 switch from contact to separation, the power generation component 3 starts to generate current, and as the first friction layer 31 and the second friction layer 32 gradually separate, the current generated by the power generation component 3 becomes stronger; because under normal circumstances, the first display part 1 and the second display part 2 are both relative to the first display part 1, in one embodiment of the present application, the first friction layer 31 is at least set inwardly on one side edge facing the second friction layer 32 compared to the edge of the first display part 1; the second friction layer 32 is at least set inwardly on one side edge facing the first friction layer 31 compared to the edge of the second display part 2; in this way, when the first display part 1 and the second display are separated by a small distance, the first friction layer 31 and the second friction layer 32 can be separated from each other, thereby extending the power generation time of the power generation component 3 and further improving the battery life of the mobile device.

[0073] However, in order to ensure the power generation effect of the power generation component 3, in one embodiment of the present application, the area ratio of the first friction layer 31 to the first display part 1 is greater than 90%; the area ratio of the second friction layer 32 to the second display part 2 is greater than 90%. In this way, there is a sufficiently large contact friction area between the first friction layer 31 and the second friction layer 32, thereby ensuring the power generation effect of the power generation component 3.

[0074] The present application does not impose any specific restrictions on the areas of the first friction layer 31 and the second friction layer 32. The areas of the first friction layer 31 and the second friction layer 32 may be the same or different. In one embodiment, the area of ​​the first friction layer 31 is the same as the area of ​​the second friction layer 32; when the folding screen 100 is in the folded state a, the first friction layer 31 and the second friction layer 32 completely overlap; in this way, the contact friction area between the first friction layer 31 and the second friction layer 32 can be increased to the greatest extent, thereby improving the power generation effect of the power generation component 3.

[0075] In the examples of this application, please refer to Fig. 9 The transmission component 42 includes a connecting wire, a rectifier module and a buck regulator module. One end of the connecting wire is electrically connected to the power generation component 3 to conduct the induced current generated by the power generation component 3. The input end of the rectifier module is electrically connected to the other end of the connecting wire. The rectifier module is used to convert the induced current into a direct current output. The input end of the buck regulator module is electrically connected to the output end of the rectifier module. The output end of the buck regulator module is electrically connected to the battery 41. The buck regulator module is used to reduce the voltage of the direct current and charge the battery 41. Specifically, the rectifier module includes a rectifier bridge and a filter capacitor, which are used to preliminarily shape the induced current input from its input end to form a direct current output.

[0076] In the second aspect, an embodiment of the present application provides a mobile device, the mobile device comprising a folding screen 100. It should be noted that the folding screen 100 is set as the above-mentioned folding screen 100, that is, the folding screen 100 includes all the technical features of the above-mentioned folding screen 100, and the mobile device includes all the embodiments of the above-mentioned folding screen 100, and also has all the technical effects of the above-mentioned embodiments, which will not be repeated here one by one.

[0077] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] The above is a detailed introduction to a folding screen and a mobile device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A folding screen, characterized in that: The folding screen comprises a first display portion and a second display portion that are movably connected, so that the folding screen has a folded state and an unfolded state; The folding screen also includes: A power generation component, the power generation component includes a first friction layer, a second friction layer and a conductive component, the first friction layer is arranged on the first display part, the second friction layer is arranged on the second display part, when the folding screen switches between the folding state and the unfolding state, the first friction layer and the second friction layer switch between physical contact and separation states, generating induced charges and electrostatic fields, the conductive component is in the electrostatic field and is in electrical contact with the first friction layer and / or the second friction layer to collect induced current; and, The energy storage component includes a battery and a transmission component. The transmission component electrically connects the battery and the conductive component to transmit the induced current and charge the battery.

2. The folding screen according to claim 1, characterized in that: The material of the first friction layer is set to be one of polyethylene terephthalate, polymethyl methacrylate or nitrile rubber; The material of the second friction layer is set to be polyimide or silicone.

3. The folding screen according to claim 1, characterized in that: The folding screen further includes a flexible glass cover plate, which is disposed on the first friction layer and the second friction layer and covers the first display part and the second display part; Wherein, the thickness of the flexible glass cover is set to ≤0.1 mm.

4. The folding screen according to claim 1, characterized in that: The conductive component comprises: A first electrode layer, wherein the first electrode layer is disposed on the first display portion; and a second electrode layer, wherein the second electrode layer is disposed on the second display portion; Wherein, the first friction layer is disposed on the first electrode layer and is in electrical contact with the first electrode layer; The second friction layer is disposed on the second electrode layer and is in electrical contact with the second electrode layer; The transmission component is electrically connected to the first electrode layer, the second electrode layer and the battery.

5. The folding screen according to claim 4, characterized in that: The peripheral edge of the first electrode layer is arranged flush with the peripheral edge of the first display portion; The peripheral edge of the second electrode layer is arranged flush with the peripheral edge of the second display portion.

6. The folding screen according to claim 1, characterized in that: The conductive component comprises an inductive conductor, wherein: The induction conductor is disposed on the first display portion and is arranged side by side with the first friction layer and spaced apart from each other, and the induction conductor is electrically connected to the first friction layer through a metal wiring, or; The induction conductor is disposed on the second display portion and is arranged side by side with the second friction layer and spaced apart from each other, and the induction conductor is electrically connected to the second friction layer through a metal wiring; The transmission component is electrically connected to the induction conductor and the battery.

7. The folding screen according to claim 1, characterized in that: At least one edge of the first friction layer facing the second friction layer is indented compared to the edge of the first display portion; At least one edge of the second friction layer facing the first friction layer is indented compared to an edge of the second display portion.

8. The folding screen according to claim 1, characterized in that: The area of ​​the first friction layer and the first display portion accounts for more than 90%; The area of ​​the second friction layer and the second display portion accounts for more than 90%.

9. The folding screen according to claim 8, characterized in that: The area of ​​the first friction layer is the same as the area of ​​the second friction layer; When the folding screen is in the folded state, the first friction layer and the second friction layer completely overlap.

10. A mobile device, characterized in that: Comprising a folding screen as described in any one of claims 1 to 9.

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