CN111627328B

CN111627328B - Electronic device and flexible display panel assembly thereof

Info

Publication number: CN111627328B
Application number: CN202010378300.9A
Authority: CN
Inventors: 沈烈康; 曾传华
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2022-10-21
Anticipated expiration: 2040-05-07
Also published as: CN111627328A

Abstract

The application discloses an electronic device and a flexible display panel assembly thereof, wherein the flexible display panel assembly comprises a flexible display panel and a support plate; the backup pad bonds with flexible display panel, and backup pad and flexible display panel range upon range of setting, and the backup pad is made by shape memory alloy, and the backup pad is equipped with two at least connecting terminal, and two at least connecting terminal are connected with the power electricity respectively, can be used for supporting flexible display panel when the backup pad circular telegram, can follow flexible display panel folding when the backup pad outage. According to the embodiment of the application, the support plate is made of the shape memory alloy, the support plate is electrically connected with the power supply, when the power supply is used for electrifying the support plate, the temperature of the support plate rises, and the shape memory alloy is restored to be flat and used for supporting the flexible display panel, so that the electronic device is in a flat unfolded state. When the power supply is disconnected from the support plate, the temperature of the support plate is reduced, and the shape memory alloy becomes a flexible body, so that the electronic device can be folded.

Description

Electronic device and flexible display panel assembly thereof

Technical Field

The application relates to the technical field of electronic devices, in particular to an electronic device and a flexible display panel assembly thereof.

Background

At present, an electronic device with a folding function generally comprises a flexible display panel and a grid steel sheet for bearing the flexible display panel, wherein a hollow part of the grid steel sheet is formed in a part of the grid steel sheet, so that the grid steel sheet has certain extending performance, and a bending area of the flexible display panel is convenient to support. The area of the grid steel sheet which is not hollowed out is used for supporting the non-bending area of the flexible display panel. Because the junction of the hollowed-out area and the non-hollowed-out area of the grid steel sheet has a sudden change in structure, the supporting performance of the grid steel sheet on the flexible display panel is suddenly changed, so that the light and shadow of the flexible display panel at the junction of the hollowed-out area and the non-hollowed-out area of the grid steel sheet are not smooth, the display effect of the flexible display panel is reduced, and the use experience of a user is influenced.

Disclosure of Invention

In one aspect, an embodiment of the present application provides a flexible display panel assembly, including: the flexible display panel is adhered to the supporting plate, the supporting plate and the flexible display panel are stacked, the supporting plate is made of shape memory alloy, the supporting plate is provided with at least two connecting terminals, the at least two connecting terminals are electrically connected with a power supply respectively, the supporting plate can be used for supporting the flexible display panel when being powered on, and the supporting plate can be folded along with the flexible display panel when being powered off.

In another aspect, an electronic device is further provided, where the electronic device includes a housing assembly and a flexible display panel assembly as described above, and the flexible display panel assembly is connected to the housing assembly.

Adopt this application technical scheme, the beneficial effect who has does: according to the embodiment of the application, the support plate is made of the shape memory alloy, the support plate is electrically connected with the power supply through the connecting terminal, when the power supply is used for electrifying the support plate, the temperature of the support plate rises, and the shape memory alloy is restored to be flat so as to be used for supporting the flexible display panel, so that the electronic device is in a flat unfolded state. When the power supply is disconnected from the support plate, the temperature of the support plate is reduced, and the shape memory alloy becomes a flexible body, so that the shape memory alloy deforms along with the rotation of the shell assembly, and the electronic device is folded.

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 present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 discloses a schematic perspective view of an electronic device according to an embodiment of the present application;

FIG. 2 is an exploded view of the electronic device of FIG. 1;

FIG. 3 discloses a perspective view of the housing assembly of FIG. 2;

FIG. 4 is a cross-sectional diagram of the electronic device in FIG. 1;

FIG. 5 is a schematic plan view of the support plate of FIG. 2;

fig. 6 is a schematic plan view of a support plate in another embodiment of the present application.

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. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures associated with the present application are shown in the drawings, not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Referring to fig. 1 and fig. 2, fig. 1 discloses a schematic perspective structure of an electronic device according to an embodiment of the present disclosure, and fig. 2 discloses an exploded structure of the electronic device in fig. 1. The present application provides a foldable electronic device 100, the electronic device 100 may include a housing assembly 10 and a flexible display panel assembly 20, the flexible display panel assembly 20 is connected to the housing assembly 10, the flexible display panel assembly 20 is used for displaying information, and the housing assembly 10 is used for fixing the flexible display panel assembly 20.

When the electronic device 100 is in a folded state, the flexible display panel assembly 20 may be located on the opposite surface of the housing assembly 10, that is, the electronic device 100 is in a folded-in structure. Alternatively, when the electronic device 100 is in the folded state, the flexible display panel assembly 20 may be located on the opposite surface of the housing assembly 10, i.e. the electronic device 100 is in the folded-out structure. The embodiment of the present application does not limit the folding manner of the electronic device 100.

The electronic device 100 may be any one of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, calculators, programmable remote controllers, pagers, netbook computers, personal Digital Assistants (PDAs), portable Multimedia Players (PMPs), moving picture experts group (MPEG-1 or MPEG-2), audio layer 3 (MP 3) players, portable medical devices, and digital cameras and combinations thereof. Of course, the electronic device 100 may be another foldable electronic device 100. The following description will be made by taking the electronic device 100 as a mobile phone as an example.

Referring to fig. 1 and 2, the housing assembly 10 can be used as a carrier for mounting a camera module, a battery module, a flexible display panel, and other electronic components such as a motherboard, an antenna, a processor, etc. The housing assembly 10 may serve as a case that can function to protect the electronic components (e.g., motherboard, antenna, battery, processor, etc.) inside the electronic device 100, so the housing assembly 10 may also be referred to as a "protective housing". The housing assembly 10 may include at least two housings 12 and a rotary shaft assembly 14, the rotary shaft assembly 14 being disposed between two adjacent housings 12, the rotary shaft assembly 14 being for rotatably connecting the two adjacent housings 12.

For example, in the present embodiment, the housing assembly 10 may include a first housing 12a and a second housing 12b. Wherein, the first shell 12a and the second shell 12b are rotatably connected together through the rotating shaft assembly 14 to realize the folding of the electronic device 100. The shaft assembly 14 can also be a part of a casing (or protective housing) that is formed with the housing 12.

Of course, the number of the housing 12 may also be plural, for example, in one embodiment, the number of the housing 12 is three, and the number of the rotating shaft assembly 14 is two. Specifically, the housing assembly 10 may include a first housing, a second housing, and a third housing, the shaft assembly 14 including a first shaft assembly and a second shaft assembly, the first housing and the second housing being rotationally coupled together by the first shaft assembly, the second housing and the third housing being rotationally coupled together by the second shaft assembly. Here, the specific number of the housing 12 and the rotating shaft assembly 14 may be determined according to actual situations, and the embodiment of the present application is not particularly limited.

It is noted that the terms "first", "second", etc. herein, as well as above and below, 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. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the described features.

It is to be understood that the names of the "first casing", "second casing", "third casing", "housing", and "protective casing" may be interchanged, for example, the "first casing" may also be referred to as "second casing".

Further, as shown in fig. 2 and fig. 3, fig. 3 discloses a perspective view of the housing assembly in fig. 2. The housing 12 includes a bottom plate 121 and a rim 122, and the rim 122 surrounds at least a portion of the bottom plate 121 to form a mounting cavity 123. The flexible display panel assembly 20 is coupled to the housing assembly 10 and covers an opening of the mounting cavity 123.

Specifically, in the present embodiment, the bottom plate 121 is substantially rectangular, and the frame 122 may include a first frame 122a, a second frame 122b, and a third frame 122c. The first frame 122a, the second frame 122b, and the third frame 122c are disposed around the bottom plate 121. The first frame 122a and the third frame 122c are disposed in parallel, and both ends of the second frame 122b are connected to the ends of the first frame 122a and the third frame 122c, respectively. One end of the first frame 122a far away from the second frame 122b is connected to the rotating shaft assembly 14. The end of the third frame 122c away from the second frame 122b is connected to the pivot assembly 14.

Further, referring to fig. 2 and fig. 4, fig. 4 discloses a schematic cross-sectional structure diagram of the electronic device in fig. 1. The electronic device 100 further comprises an adhesive layer 30, and the flexible display panel assembly 20 is adhered to the housing assembly 10 by the adhesive layer 30.

Specifically, as shown in fig. 2, the flexible display panel assembly 20 may be fixed on a surface of the bezel 122 facing away from the bottom plate 121 by adhesive-backed bonding.

Alternatively, in another embodiment, the flexible display panel assembly 20 may be fixed on the convex pillar inside the housing assembly 10 by bonding.

Or, can also set up shading glue or anti-dazzling screen etc. in one side that flexible display panel assembly 20 deviates from housing assembly 10, on the one hand, can be fixed in housing assembly 10 with flexible display panel assembly 20, on the other hand also can carry out the shading to the side clearance between flexible display panel assembly 20 and the housing assembly 10, avoids inside light to expose, influences display effect.

Or, in another embodiment, the flexible display panel assembly 20 may be further connected to the bottom plate 121 by clamping, screwing, or the like, and the connection structure between the flexible display panel assembly 20 and the housing assembly 10 is not particularly limited in this embodiment.

Referring to fig. 2 and 5, fig. 5 is a schematic plan view of the supporting plate in fig. 2. The flexible display panel assembly 20 includes a flexible display panel 22 and a support plate 24. Wherein, backup pad 24 and flexible display panel 22 bond, and backup pad 24 and flexible display panel 22 range upon range of setting, and backup pad 24 is made by shape memory alloy, and backup pad 24 is equipped with two at least connecting terminal 242, and two at least connecting terminal 242 are connected with the power electricity respectively, can be used for supporting flexible display panel 22 when backup pad 24 circular telegram, can follow flexible display panel 22 and fold when backup pad 24 cuts off the power supply.

Specifically, in the present embodiment, the support plate 24 and the flexible display panel 22 are stacked in the connection direction of the flexible display panel assembly 20 and the housing assembly 10, and the support plate 24 is disposed between the flexible display panel 22 and the housing assembly 10, on one hand, the support plate 24 is used to connect and fix the flexible display panel 22 and the housing assembly 10, and on the other hand, the support plate 24 is used to support and fix the flexible display panel 22.

In the present embodiment, the support plate 24 is made of Shape Memory Alloy (SMA). Shape memory alloys are materials composed of two or more metal elements that exhibit a Shape Memory Effect (SME) through thermoelastic and martensitic transformation and inversions thereof. The shape memory alloy deforms at a relatively low temperature and can recover the shape before deformation after heating. At least two connection terminals 242 provided on the support plate 24 are used to electrically connect the support plate 24 with a power source, so that the support plate 24 can be heated by the power source. In the embodiment of the present application, the supporting plate 24 is made of shape memory alloy, and by electrically connecting the supporting plate 24 to the power supply, when the power supply energizes the supporting plate 24, the temperature of the supporting plate 24 rises, and the shape memory alloy is restored to be in a flat shape for supporting the flexible display panel 22, so that the electronic device 100 is in a flat unfolded state. When the power supply is disconnected from the supporting plate 24, the temperature of the supporting plate 24 is lowered, and the shape memory alloy becomes a flexible body, thereby deforming to follow the rotation of the housing assembly 10 to facilitate the folding of the electronic device 100.

Alternatively, in the present embodiment, as shown in fig. 3 and 5, at least two connection terminals 242 are provided on a side of the support board 24 facing away from the flexible display panel 22. By disposing the connection terminal 242 on the surface of the support plate 24 away from the flexible display panel 22, the surface of the support plate 24 facing the flexible display panel 22 can be made flat, so that the support plate 24 and the flexible display panel 22 are attached more tightly to form a stable support.

Alternatively, in another embodiment, at least two connection terminals 242 may be disposed on two opposite sides of the supporting board 24, so as to reduce the occupation of the connection terminals 242 on the internal space of the housing assembly 10, avoid interference with other electronic components in the housing assembly 10, and also reduce the volume of the electronic device 100.

Further, as shown in fig. 5, at least two connection terminals 242 are oppositely arranged in pairs along the length direction of the support plate 24 at intervals to form a group of connection terminals 242, and the groups of connection terminals 242 are evenly arranged at intervals along the width direction of the support plate 24.

Wherein, the length direction of the support plate 24 refers to the length direction of the housing assembly 10, i.e., in the X direction shown in fig. 1 and 5, and the width direction of the support plate 24 refers to the width direction of the housing assembly 10, i.e., in the Y direction shown in fig. 1 and 5. A set of connection terminals 242 spaced opposite each other includes a positive terminal and a negative terminal for connecting opposite ends of a power source.

In the present embodiment, one of the two connection terminals 242 may be disposed on the first housing 12a, and the other of the two connection terminals 242 may be disposed on the second housing 12b, so that the two connection terminals 242 are respectively disposed on two opposite sides of the folding region of the flexible display panel 22 corresponding to the rotation shaft assembly 14, so that the temperature of the support plate 24 at the position of the folding region is higher, thereby shortening the time for hardening or softening the support plate 24 and improving the folding efficiency of the electronic device 100. Through the even spaced multiunit connecting terminal 242 that sets up in the width direction of backup pad 24, can further strengthen the homogeneity of the temperature on the backup pad 24 to can reduce the time of heating to the backup pad 24 in folding region, make the sclerosis efficiency of backup pad 24 higher, and then promote user and use experience.

In the present embodiment, as shown in fig. 5, the number of the connection terminals 242 is 12, and the 12 connection terminals 242 are oppositely spaced in two in the X direction shown in fig. 5 to form six sets of connection terminals 242, and the six sets of connection terminals 242 are uniformly spaced in the Y direction shown in fig. 5.

Alternatively, in another embodiment, at least two connection terminals 242 may be oppositely arranged in pairs along the width direction of the support board 24 to form a group of connection terminals 242, and the groups of connection terminals 242 are evenly arranged along the length direction of the support board 24.

Specifically, as shown in fig. 6, fig. 6 is a schematic plan view of a support plate in another embodiment of the present application. The number of the connection terminals 242 is 12, and the 12 connection terminals 242 are opposite to each other in the Y direction shown in fig. 6 at intervals to form six groups of the connection terminals 242, and the six groups of the connection terminals 242 are uniformly spaced in the direction X shown in fig. 6. Through setting up a set of connecting terminal 242 respectively in the width direction's of backup pad 24 relative both sides, can be convenient for divide into a plurality of units with connecting terminal 242 to set up each unit alone in a casing 12, so, can set up the power in each casing 12, and be connected connecting terminal 242 alone with the power is connected electrically, when the power takes place to damage on one of them casing 12, remaining power still can heat backup pad 24, in order to promote user's use and experience.

In other optional embodiments, the number of the connection terminals 242 may also be 4, 6, 8, 10, 14, or 16, and the like, and the arrangement manner of the connection terminals 242 may also be distributed in a matrix, or distributed in a ring, and the like, and may be flexibly arranged according to the shape and size of the electronic device 100, which is not specifically limited in the embodiment of the present application.

Further, the flexible display panel assembly 20 includes an insulating layer (not shown) covering at least the surface of the supporting board 24 where the connecting terminals 242 are disposed, and exposing at least two of the connecting terminals 242. By providing the insulating layer on the surface of the support board 24 where the connection terminal 242 is provided, the support board 24 can be prevented from short-circuiting when the connection terminal 242 is energized, so as to protect the electronic device 100 and prevent the electronic device 100 from being damaged due to short-circuiting.

In an embodiment, when the connection terminal 242 is disposed on the surface of the support board 24 away from the flexible display panel 22, the insulation layer may cover the surface of the support board 24 away from the flexible display panel 22 and expose the connection terminal 242, so as to form an insulation protection on the periphery of the connection terminal 242.

In another embodiment, when the connection terminals 242 are disposed on two opposite side surfaces of the support board 24, the insulation layer may cover a surface of the support board 24 away from the flexible display panel 22 and a side surface of the support board 24, and the connection terminals 242 are exposed, so as to form an insulation protection on the periphery of the connection terminals 242, and on the other hand, form an insulation protection on the surface of the support board 24 located in the housing assembly 10, so as to prevent the support board 24 from contacting the electronic components in the housing assembly 10 to cause a short circuit.

In another embodiment, an insulating layer may be coated on all surfaces of the supporting plate 24 to further improve the insulating performance of the supporting plate 24.

Further, in an embodiment, the insulating layer may be an insulating glue, and the insulating glue is formed on the surface of the supporting plate 24 by a film pasting or coating method. An insulating layer is formed on the surface of the supporting plate 24 in a film pasting or coating mode, so that the thickness of the insulating layer is uniform, and the insulating performance of the supporting plate 24 is good.

The insulating glue can be an insulating tape or an insulating adhesive. The insulating tape is also called as insulating tape, and the adhesive tape belt consists of a base band and a pressure-sensitive adhesive layer. The base belt is generally made of cotton cloth, synthetic fiber fabric, plastic film and the like, and the adhesive layer is made of compounding agents such as rubber and tackifying resin and the like, so that the base belt is good in viscosity and excellent in insulating property. The insulating tape has the characteristics of good insulation, voltage resistance, flame retardance, weather resistance and the like. The insulating adhesive is an adhesive having an electrical insulating property. The electrical insulation performance of the synthetic adhesive is mainly determined by the characteristics of the polymer material, and is directly related to the composition of the adhesive, the surface properties of the adhesive joint, moisture absorption, oxidation process, ambient temperature and other factors.

Alternatively, in another embodiment, the insulating layer may be an insulating varnish, and the insulating varnish is formed on the surface of the support plate 24 by spraying or coating. The insulating layer is formed on the surface of the supporting plate 24 by spraying or coating, so that the forming efficiency of the insulating layer can be improved.

The insulating paint is mainly composed of a synthetic resin or a natural resin serving as a binder (film forming substance) and certain auxiliary materials (solvents, diluents, fillers, pigments and the like). The insulating paint has excellent electrical, thermal, mechanical and chemical properties. The commonly used insulating varnish is phenolic resin, alkyd epoxy resin, polyester resin, organic silicon resin, polyimide, polydiphenyl ether and the like.

Further, as shown in fig. 2, in the present embodiment, at least two connection terminals 242 are electrically connected to the main board 40 disposed in the housing assembly 10. By using the main board 40 to supply power to the supporting board 24, the power supply structure of the supporting board 24 can be simplified, thereby reducing the number of components and the size of the electronic device 100.

In an embodiment, referring to fig. 2, at least two power supply terminals 42 are disposed on the main board 40, and the connection terminals 242 are welded to the corresponding power supply terminals 42.

In one embodiment, the connection terminals 242 disposed on the support plate 24 and the power supply terminals 42 disposed on the main board 40 are disposed in a one-to-one correspondence, and the orthographic projection of the connection terminals 242 on the main board 40 coincides with the power supply terminals 42, so that the connection terminals 242 and the corresponding power supply terminals 42 can be directly connected by welding, the electrical connection structure of the support plate 24 is simplified, and the assembly efficiency can be improved.

Alternatively, in another embodiment, the main plate 40 is spaced opposite the support plate 24. In this way, at least two power supply terminals 42 may be disposed on the surface of the main board 40 facing the supporting board 24, at least two connection terminals 242 may be disposed on the surface of the supporting board 24 facing the main board 40, and each connection terminal 242 may be disposed corresponding to one power supply terminal 42. At this time, the power supply terminal 42 and the connection terminal 242 may be electrically connected using a spring piece.

Specifically, a spring plate may be disposed between the support plate 24 and the main board 40, one end of the spring plate is connected and electrically connected to the power supply terminal 42, and the other end of the spring plate is connected and electrically connected to the connection terminal 242. By providing the resilient piece to electrically connect the connection terminal 242 and the power supply terminal 42, the installation and maintenance of the electronic device 100 can be facilitated.

In still another embodiment, when the orthographic projection of the connection terminal 242 provided on the support board 24 on the main board 40 does not coincide with the power supply terminal 42 provided on the main board 40, one connection terminal 242 and the corresponding one power supply terminal 42 may be electrically connected using a wire or a flexible circuit board or the like, and thus, the connection terminal 242 or the power supply terminal 42 may be provided at an arbitrary position so as to avoid interference with the electronic components provided in the case assembly 10.

In another embodiment, a separate power source may be provided for supplying power to the supporting plate 24, and the embodiment of the present application is not particularly limited.

Unlike the prior art, in the embodiment of the present application, the support plate 24 is made of shape memory alloy, and by electrically connecting the support plate 24 to a power supply, when the power supply energizes the support plate 24, the temperature of the support plate 24 rises, and the shape memory alloy returns to a flat plate shape to support the flexible display panel 22, so that the electronic device 100 is in a flat unfolded state. When the power supply is disconnected from the support plate 24, the temperature of the support plate 24 is reduced, and the shape memory alloy becomes a flexible body, thereby deforming to follow the rotation of the housing assembly 10 to facilitate the folding of the electronic device 100.

The above description is only an example of the present application, and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. An electronic device is characterized by comprising an elastic sheet, a main board, a shell assembly and a flexible display panel assembly, wherein the shell assembly comprises at least two shells and a rotating shaft assembly, the rotating shaft assembly is arranged between every two adjacent shells, and the rotating shaft assembly is used for rotatably connecting the two adjacent shells; the mainboard set up in the casing subassembly, flexible display panel subassembly connect in the casing subassembly, the mainboard orientation the surface of flexible display panel subassembly is equipped with two at least power supply terminals, the one end of shell fragment with power supply terminal is connected and is connected electrically, two the casing includes first casing and second casing, flexible display panel subassembly includes:

a flexible display panel;

the support plate is bonded with one side, facing the shell assembly, of the flexible display panel, the support plate and the flexible display panel are arranged in a stacked mode, the support plate is made of shape memory alloy, at least two connecting terminals are arranged on one side, away from the flexible display panel, of the support plate, the at least two connecting terminals form at least one group of connecting terminals, each group of connecting terminals comprises a positive terminal and a negative terminal and is used for connecting two opposite ends of a power supply, the support plate and the main board are arranged in a spaced mode relatively, and the connecting terminals are connected with the other end of the elastic piece and are electrically connected; and

the insulating layer covers the surface, at least provided with the connecting terminals, of the supporting plate, and the at least two connecting terminals are exposed;

wherein the support plate is capable of supporting the flexible display panel in a folded region of the housing assembly when the support plate is powered on in the unfolded state of the housing assembly, and capable of folding to fold the flexible display panel in the folded region of the housing assembly when the support plate is powered off in the process of converting the housing assembly from the unfolded state to the folded state;

the at least two connecting terminals are oppositely arranged in pairs at intervals along the length direction of the supporting plate to form a plurality of groups of connecting terminals, the plurality of groups of connecting terminals are evenly arranged at intervals along the width direction of the supporting plate, one of the connecting terminals in each group is arranged on the supporting plate corresponding to the first shell, and the other connecting terminal in each group is arranged on the supporting plate corresponding to the second shell, so that the two connecting terminals in each group of connecting terminals are respectively positioned on two opposite sides of a folding area of the flexible display panel corresponding to the rotating shaft assembly; or, two at least connecting terminal are following two liang of relative intervals set up the formation multiunit connecting terminal on the width direction of backup pad, the multiunit connecting terminal is followed the even interval of length direction of backup pad sets up, each group's connecting terminal set up alone in first casing or in the second casing, just first casing with set up the power on the second casing respectively, make each group's connecting terminal in the first casing with power in the first casing is connected, each group's connecting terminal in the second casing with power in the second casing is connected.

2. The electronic device of claim 1, wherein the insulating layer is an insulating glue, and the insulating glue is formed on the surface of the supporting plate by means of film pasting or coating.

3. The electronic device according to claim 1, wherein the insulating layer is an insulating varnish, and the insulating varnish is formed on the surface of the support plate by spraying or coating.

4. The electronic device according to claim 1, wherein the housing assembly comprises at least two housings and a rotating shaft assembly, the rotating shaft assembly is disposed between two adjacent housings, and the rotating shaft assembly is used for rotatably connecting two adjacent housings; the electronic device comprises an adhesive layer, the flexible display panel assembly is adhered to the shell assembly through the adhesive layer, and the support plate is located between the flexible display panel and the shell assembly.