Foldable electronic device

Abstract

Provided in the embodiments of the present application is a foldable electronic device. The foldable electronic device comprises: a main board, a secondary board, a processor, a first switch assembly, a first signal line, a first module and a second module, wherein the main board is connected to the secondary board by means of a rotary shaft, the first module and the second module operate in a mutually exclusive manner, the processor is located on the main board, and the first module and the second module are located on the secondary board; the first switch assembly is connected between the processor and the first module by means of the first signal line, so as to form a first branch; the first switch assembly is connected between the processor and the second module by means of the first signal line, so as to form a second branch; the first signal line is located in the rotary shaft; and the first switch assembly is used for connecting the first branch or the second branch. On the basis of the technical solution of the present application, by means of providing a switch assembly to switch branches between a processor and modules operating in a mutually exclusive manner, the reuse of a through-shaft signal line is realized, and the number of wires and the area thereof are reduced, thereby avoiding waste of resources, and also reducing the difficulty in designing a rotary shaft.

Description

A foldable electronic device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on September 22, 2023, with application number 202311251138.4 and invention name "A Foldable Electronic Device", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of terminal devices, and in particular to a foldable electronic device. Background Art

[0004] To maximize space, foldable electronic devices typically have circuit boards on both sides of the hinge. The circuit board housing the system-on-chip (SOC) is typically called the main board, while the circuit board on the other side of the hinge is called the secondary board. Communication signals between the secondary board and the main board must be routed through flexible materials such as flexible printed circuits (FPCs) through the hinge.

[0005] In hardware design, compared with conventional signals, high-speed signals have higher requirements on reference planes, shielding requirements, transmission lines, etc., so they require more through-axis signal lines, and thus occupy more FPC width.

[0006] In addition, the more signal lines passing through the shaft, the more board-to-board connectors (BTBs) are required, which will occupy more board layout area, resulting in low space utilization on the sub-frame side and affecting the size of the entire machine.

[0007] Therefore, how to reduce the number of through-axis signal lines and narrow the circuit board area occupied by the through-axis signal lines is an urgent problem to be solved.

[0008] Summary of the Invention

[0009] A foldable electronic device provided in an embodiment of the present application is used to solve the problem of an excessive number of through-axis signal lines in a foldable electronic device and an excessively large circuit board area occupied by the through-axis signal lines.

[0010] An embodiment of the present application provides a foldable electronic device, comprising a main board, a sub-board, a processor, a first switch assembly, a first signal line, a first module, and a second module. The main board and the sub-board are connected via a hinge, the first module and the second module operate mutually exclusive, the processor is located on the main board, and the first module and the second module are located on the sub-board.

[0011] The first switch assembly is connected between the processor and the first module via a first signal line to form a first branch; the first switch assembly is connected between the processor and the second module via the first signal line to form a second branch; the first signal line is located inside the rotating shaft;

[0012] The first switch component is used to conduct the first branch or the second branch.

[0013] Based on the technical solution in the embodiment of the present application, a switch component is set to switch the branch between the processor and the mutually exclusive modules, thereby realizing the reuse of the first signal line, reducing the number of wirings and the wiring area, and avoiding the waste of resources caused by the idleness of the through-axis signal line.

[0014] In one possible design, the first module is a first image acquisition module, and the second module is a first display module; wherein the first image acquisition module and the first display module are respectively applied to different types of screens of the foldable electronic device.

[0015] It should be noted that, considering the application scenarios of foldable electronic devices, such as the folded, hovering, and unfolded states of mobile phones, it can be determined that the display module in the inner screen and the image acquisition module on the outer screen generally work in a mutually exclusive manner, and the image acquisition module on the inner screen and the display module on the outer screen also work in a mutually exclusive manner. Therefore, the mutually exclusive operation of the display modules and image acquisition modules applied to different screens can be used to control the two to reuse the same signal line, which can save the number of signal lines and will not affect the user experience.

[0016] In one possible design, the screen types of the foldable electronic device include an outer screen and an inner screen.

[0017] In one possible design, the first switch assembly includes a first switch and a second switch, the first switch is located on the main board, and the second switch is located on the sub-board;

[0018] The first switching end of the first switch is connected to the first image acquisition serial interface of the processor, the connection end of the first switch is connected to the connection end of the second switch via the first signal line, and the first switching end of the second switch is connected to the first image acquisition module, forming a first branch;

[0019] The second switching end of the first switch is connected to the first display serial interface of the processor, the connection end of the first switch is connected to the connection end of the second switch through the first signal line, and the second switching end of the second switch is connected to the first display module to form a second branch.

[0020] This design incorporates high-speed switches (i.e., a first switch and a second switch) on both the main and secondary boards of a foldable electronic device. These switches can be used in high-speed signal transmission scenarios to respond to user input and switch to the desired branch. Because data transmission continues along the same signal line regardless of the switch's module, this design minimizes the number of signal lines, addressing the issues of excessive signal lines through the axis and the large area occupied by these lines.

[0021] In one possible design, the foldable electronic device further includes a second image acquisition module, and the first image acquisition module and the second image acquisition module are respectively applied to different types of screens of the foldable electronic device;

[0022] The second image acquisition module is located on the mainboard, and the second image acquisition module is connected to the processor.

[0023] It can be understood that in the design scheme, if the second image acquisition module does not participate in the switching of the branch, the installation position of the second image acquisition module is more flexible. Therefore, in this design, the second image acquisition module can be set on the mainboard and directly connected to the processor, thereby eliminating the need to use a through-axis signal line to connect the second image acquisition module and the processor, thereby improving the accuracy of signal transmission.

[0024] In one possible design, the foldable electronic device further includes a second switch assembly, a second signal line, a second image acquisition module, and a second display module; wherein the first image acquisition module and the second image acquisition module are respectively applied to different types of screens of the foldable electronic device, the first display module and the second display module are respectively applied to different types of screens of the foldable electronic device, and the second image acquisition module and the second display module are located on the sub-board;

[0025] The second switch component is connected between the processor and the second image acquisition module through the second signal line to form a third branch; the second switch component is connected between the processor and the second display module through the second signal line to form a fourth branch;

[0026] The second switch component is used to conduct the third branch or the fourth branch.

[0027] It should be noted that, considering the application scenarios of foldable electronic devices, such as the folded, hovering, and unfolded states of mobile phones, it can be determined that the display module in the inner screen and the image acquisition module of the outer screen generally work mutually exclusively, and the image acquisition module of the inner screen and the display module of the outer screen work mutually exclusively;

[0028] Therefore, based on the mutual exclusive operation of the first image acquisition module and the first display module, and the addition of a first switch component switching branch to realize multiplexing of signal lines, this design can also add a second switch component to realize the mutual exclusive operation of the second image acquisition module and the second display module to multiplex signal lines, thereby further saving the number of through-axis signal lines.

[0029] In one possible design, the second switch assembly includes a third switch and a fourth switch, the third switch is located on the main board, and the fourth switch is located on the sub-board;

[0030] A first switching end of the third switch is connected to the second image acquisition serial interface of the processor, a connection end of the third switch is connected to a connection end of the fourth switch via a second signal line, and a first switching end of the fourth switch is connected to the second image acquisition module, forming a third branch;

[0031] The second switching end of the third switch is connected to the second display serial interface of the processor, the connection end of the third switch is connected to the connection end of the fourth switch through the second signal line, and the second switching end of the fourth switch is connected to the second display module to form a fourth branch.

[0032] This design incorporates high-speed switches (i.e., third and fourth switches) on the main and secondary boards of a foldable electronic device. These switches respond to user input by switching to the desired branch. Because data transmission continues along the same signal line regardless of module, this design minimizes the number of signal lines, addressing the issues of excessive signal lines through the axis and the large area occupied by these lines.

[0033] In one possible design, the foldable electronic device further includes a flexible printed circuit board (FPC); the FPC is connected between the main board and the sub-board, wherein the FPC is used to arrange the first signal line and the second signal line.

[0034] Based on the technical solution of this design, compared with printed circuit boards (PCBs), FPCs are made of flexible insulating substrates that can be bent and rolled, making them more suitable for the needs of foldable electronic devices.

[0035] In one possible design, the foldable electronic device further includes a board-to-board connector BTB arranged corresponding to the first switch assembly and the second switch assembly, wherein the BTB is used to connect the FPC.

[0036] It is understandable that each signal line passing through the shaft needs to be fastened with a BTB to connect to the FPC, so by reducing the number of signal lines passing through the shaft, the number of BTBs can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] FIG1 is a schematic diagram of the appearance of a foldable electronic device;

[0038] FIG2 is a schematic diagram of the system architecture of a foldable electronic device;

[0039] FIG3 is a schematic diagram of the layout of the through-axis signal lines of a foldable electronic device;

[0040] FIG4 is a schematic structural diagram of a foldable electronic device provided in an embodiment of the present application;

[0041] FIG5 is a schematic structural diagram of another foldable electronic device provided in an embodiment of the present application;

[0042] FIG6 is a schematic structural diagram of another foldable electronic device provided in an embodiment of the present application;

[0043] FIG7 a is a schematic structural diagram of another foldable electronic device provided in an embodiment of the present application;

[0044] FIG7 b is a schematic structural diagram of another foldable electronic device provided in an embodiment of the present application;

[0045] FIG8a is a schematic structural diagram of another foldable electronic device provided in an embodiment of the present application;

[0046] FIG8 b is a schematic structural diagram of another foldable electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application clearer, the application will be further described in detail below in conjunction with the application background:

[0048] The appearance of a traditional foldable electronic device is shown in FIG1 . The appearance frame of the foldable electronic device generally includes a screen 101 , a hinge 102 , and a middle frame 103 .

[0049] Based on what is shown in FIG1 , the system architecture of a traditional foldable electronic device is shown in FIG2 . The system architecture of a foldable electronic device generally includes a main board 201 , a sub-board 202 and a through-axis circuit 203 .

[0050] Based on what is shown in Figure 2, the traditional through-axis signal line layout is shown in Figure 3. SOC301 is arranged on the main board 201; the through-axis signal line of SOC301 is engaged with the connector 302 on the main board side, and is respectively connected to the external screen image acquisition module 303, the internal screen image acquisition module 304, the external screen display module 305 and the internal screen display module 306 on the sub-board 202.

[0051] Since the various peripheral modules on the sub-board 202 need to communicate data with the SOC301 on the main board 201, it is necessary to set up multiple through-axis signal lines and multiple pairs of connectors 302. This means that in actual applications, the number of through-axis signal lines may reach dozens or even hundreds, which also makes the pin design of the through-axis circuit 203 more complicated; secondly, high-speed signals have higher requirements on reference planes, shielding requirements, and transmission lines, which makes it difficult to reduce the number of through-axis signal lines in actual engineering; thirdly, the routing width of the through-axis signal line is shown in the shaded part in Figure 3. It can be seen that the routing width of the through-axis signal line greatly occupies the wiring area of ​​the through-axis circuit 203.

[0052] Based on the above problems, an embodiment of the present application provides a foldable electronic device to solve the problem in the prior art of excessive number of signal lines passing through the axis and excessive area occupied.

[0053] The following describes the foldable electronic device provided by the exemplary embodiment of the present application in combination with the application scenarios described above and with reference to the accompanying drawings:

[0054] An embodiment of the present application provides a foldable electronic device. As shown in FIG4 , the foldable electronic device includes a main board 201, a sub-board 202, a processor 401, a first switch assembly 402, a first signal line L1, a first module 403, and a second module 404. The main board 201 and the sub-board 202 are connected via a hinge, and the first module 403 and the second module 404 operate in a mutually exclusive manner. The processor 401 is located on the main board 201, and the first module 403 and the second module 404 are located on the sub-board 202.

[0055] The first switch component 402 is connected between the processor 401 and the first module 403 via the first signal line L1, forming a first branch; the first switch component 402 is connected between the processor and the second module 404 via the first signal line L1, forming a second branch;

[0056] The first switch component 402 is used to conduct the first branch or the second branch.

[0057] Exemplarily, the processor 401 generates a control signal based on a user operation, and the first switch component 402 can turn on the first branch or the second branch in response to the control signal of the processor 401 .

[0058] Based on the technical solution in the embodiment of the present application, a switch component is set to switch the branch between the mutually exclusive modules and the processor, and the first module 403 and the second module 404 share the first signal line L1 connection with the processor 401, thereby realizing the multiplexing of the through-axis signal lines, reducing the number of through-axis signal lines and the wiring area, and avoiding the waste of resources caused by idle signal lines.

[0059] The following describes the design principles of the foldable electronic device shown in Figure 4 in conjunction with application scenarios:

[0060] First, let's look at the working status of the peripheral modules of a foldable electronic device in a common scenario as shown in Table 1 (√ in Table 1 indicates that the module is working, and × indicates that the module is not working):

[0061] Table 1

[0062] It can be found that in the folded state, hovering state and unfolded state, if the user uses the photo function, the external screen display module and the internal screen image acquisition module work mutually exclusively.

[0063] Next, let's look at the working status of the peripheral modules of a foldable electronic device in a common scenario as shown in Table 2 (√ in Table 2 indicates that the module is working, and × indicates that the module is not working):

[0064] Table 2

[0065] It can be found that in the folded state, hovering state and unfolded state, if the user uses the photo function, the external screen image acquisition module and the internal screen display module work mutually exclusively.

[0066] From the above, it can be seen that the inner screen display module and the outer screen image acquisition module generally work mutually exclusively, and the inner screen image acquisition module and the outer screen display module generally work mutually exclusively.

[0067] Therefore, in a possible embodiment, the first module is a first image acquisition module, and the second module is a first display module; wherein the first image acquisition module and the first display module are respectively applied to different types of screens of the foldable electronic device.

[0068] The embodiment of the present application utilizes the feature that the display modules and image acquisition modules applied to different screens work mutually exclusively, and controls the display modules and image acquisition modules of different screens to reuse the same switch component, which can save the number of signal lines and will not affect the user experience.

[0069] It should be noted that the screen types of foldable electronic devices may include external screens and internal screens.

[0070] The structure of the foldable electronic device shown in FIG4 is described below with reference to an embodiment:

[0071] Example 1

[0072] As shown in FIG5 , the first switch assembly 402 includes a first switch K1 and a second switch K2 . The first switch K1 is located on the main board 201 , and the second switch K2 is located on the sub-board 202 .

[0073] A first switching end of the first switch K1 is connected to the first image acquisition serial interface CSI1 of the processor 401, a connection end of the first switch K1 is connected to a connection end of the second switch K2 via a first signal line L1, and a first switching end of the second switch K2 is connected to the first image acquisition module CAM1, forming a first branch;

[0074] The second switching end of the first switch K1 is connected to the first display serial interface DSI1 of the processor 401. The connection end of the first switch K1 is connected to the connection end of the second switch K2 through the first signal line L1. The second switching end of the second switch K2 is connected to the first display module LCD1 to form a second branch.

[0075] In actual production, the first switch K1 and the second switch K2 of the foldable electronic device can be high-speed switches, which are used to respond to user operation requirements and switch to the branch required by the user operation for signal transmission.

[0076] For example, when a user uses the front camera function of the folded mobile phone, the driving circuit in the mobile phone drives the first switch K1 to switch to connect to the first image acquisition serial interface CSI1, and the driving circuit simultaneously drives the second switch K2 to connect to the first image acquisition module CAM1.

[0077] For example, when a user uses the front camera function of the unfolded mobile phone, the driving circuit in the mobile phone drives the first switch K1 to switch to connect to the first display serial interface DSI1, and the driving circuit simultaneously drives the second switch K2 to connect to the first display module LCD1.

[0078] It can be seen that compared with the traditional through-axis signal line layout shown in Figure 3, the embodiment of the present application realizes the functional reuse of the same through-axis signal line for the internal screen display module and the external screen image acquisition module, streamlines a set of through-axis signal lines, and thus reduces the width of the through-axis circuit by 1.0mm-1.8mm during the production process.

[0079] The wiring design of this embodiment reduces the number of through-axis signal lines required to build a through-axis circuit, solving the problem of too many through-axis signal lines and too large an area occupied by the signal lines.

[0080] Example 2

[0081] As shown in FIG6 , the foldable electronic device further includes a second image acquisition module CAM2 . The first image acquisition module CAM1 and the second image acquisition module CAM2 are respectively applied to different types of screens of the foldable electronic device.

[0082] The second image acquisition module CAM2 is located on the mainboard 201 , and the second image acquisition module CAM2 is connected to the processor 401 .

[0083] It can be understood that in the solution of the second embodiment, if the second image acquisition module CAM2 does not participate in the branch switching process of the first switch component 402, the installation position of the second image acquisition module CAM2 is more flexible;

[0084] Therefore, in the second embodiment, the second image acquisition module CAM2 is set on the mainboard 201 and directly connected to the processor 401, without the need for an additional through-axis signal line to connect the second image acquisition module CAM2 and the processor 401, and the direct connection method can improve the accuracy of signal transmission.

[0085] Example 3

[0086] Based on the foldable electronic device shown in FIG5 , as shown in FIG7 a , the foldable electronic device further includes a second switch component 701, a second signal line L2, a second image acquisition module CAM2, and a second display module LCD2; wherein the first image acquisition module CAM1 and the second image acquisition module CAM2 are respectively applied to different types of screens of the foldable electronic device, the first display module LCD1 and the second display module LCD2 are respectively applied to different types of screens of the foldable electronic device, and the second image acquisition module CAM2 and the second display module LCD2 are located on the sub-board 202;

[0087] The second switch component 701 is connected between the processor 401 and the second image acquisition module CAM2 via the second signal line L2, forming a third branch; the second switch component 701 is connected between the processor 401 and the second display module LCD2 via the second signal line L2, forming a fourth branch;

[0088] The second switch component 701 is used to conduct the third branch or the fourth branch.

[0089] Exemplarily, the processor 401 generates a control signal based on a user operation, and the second switch component 701 can turn on the third branch or the fourth branch in response to the control signal of the processor 401 .

[0090] It should be noted that, on the basis of the mutual exclusive operation of the first image acquisition module CAM1 and the first display module LCD1, the technical solution of the present application adds a first switch component 402 to switch the branch to realize the multiplexing of the through-axis signal line, and the present embodiment may further add a second switch component 701 to realize the mutual exclusive operation of the second image acquisition module CAM2 and the second display module LCD2 to multiplex the through-axis signal line, thereby further saving the number of through-axis signal lines.

[0091] In a possible implementation, as shown in FIG7 b , the second switch assembly 701 includes a third switch K3 and a fourth switch K4 , wherein the third switch K3 is located on the main board 201 , and the fourth switch K4 is located on the sub-board 202 ;

[0092] A first switching end of the third switch K3 is connected to the second image acquisition serial interface CSI2 of the processor 401, a connection end of the third switch K3 is connected to a connection end of the fourth switch K4 via a second signal line L2, and a first switching end of the fourth switch K4 is connected to the second image acquisition module CAM2, forming a third branch;

[0093] The second switching end of the third switch K3 is connected to the second display serial interface of the processor 401. The connection end of the third switch K3 is connected to the connection end of the fourth switch K4 through the second signal line L2. The second switching end of the fourth switch K4 is connected to the second display module LCD2, forming a fourth branch.

[0094] It should be noted that the third switch K3 and the fourth switch K4 of the foldable electronic device can be high-speed switches, which are used to respond to user operation requirements and switch to the branch required by the user operation for signal transmission.

[0095] The first image acquisition module CAM1 and the second image acquisition module CAM2 of the foldable electronic device may be cameras, and the first display module LCD1 and the second display module LCD2 may be liquid crystal displays (LCDs);

[0096] The first image acquisition serial interface CSI1 and the second image acquisition serial interface CSI2 of the processor 401 can be a camera serial interface (CSI), which is an interface developed by the mobile terminal interface standardization group (Mobile Industry Processor Interface (MIPI) Alliance); the first display module serial interface DSI1 and the second display module serial interface DSI2 of the processor 401 can be a display serial interface (DSI), which is a serial interface developed by the mobile terminal interface standardization group.

[0097] For example, when a user uses the front camera function of the folded mobile phone, the driving circuit in the mobile phone drives the third switch K3 to switch to connect to the second image acquisition serial interface CSI2, and the driving circuit simultaneously drives the fourth switch K4 to connect to the second image acquisition module CAM1.

[0098] For example, when a user uses the front camera function of the unfolded mobile phone, the driving circuit in the mobile phone drives the third switch K3 to switch to connect to the second display serial interface DSI2, and the driving circuit simultaneously drives the fourth switch K4 to connect to the second display module LCD2.

[0099] It can be seen that no matter the third switch K3 is switched to the second image acquisition serial interface CSI2 or the second display serial interface DSI2, and the fourth switch K4 is switched to the second image acquisition module CAM2 or the second display module LCD2, data transmission needs to pass through the second signal line L2;

[0100] Therefore, the wiring layout of this embodiment reduces the number of through-axis signal lines, solving the problem of too many through-axis signal lines and too large an area occupied by the through-axis signal lines.

[0101] In addition, as shown in Figures 7a and 7b, the processor 401 of this embodiment is located on the main board 201, and the first image acquisition module CAM1, the second image acquisition module CAM2, the first display module LCD1 and the second display module LCD2 are located on the sub-board 202. This application arranges the peripheral modules on the sub-board side, which can solve the problems of low utilization of the sub-board side and excessive size of the entire machine.

[0102] Example 4

[0103] As shown in FIG8a and FIG8b, the foldable electronic device further includes a flexible printed circuit board (FPC); the FPC is connected between the main board 201 and the sub-board 202, wherein the FPC is used to arrange the first signal line L1 and the second signal line L2.

[0104] Those skilled in the art should know that foldable electronic devices can also use printed circuit boards (PCBs) for wiring layout, but compared to PCBs, FPCs are made of flexible insulating substrates that can be bent and rolled, making them more suitable for the design requirements of foldable electronic devices. In addition, FPCs also help reduce device size, reduce costs, and improve production efficiency.

[0105] It should be noted that the FPC may include a surface layer, a middle layer and a reference ground plane, the middle layer is located between the surface layer and the reference ground plane, and the through-axis signal line may be arranged in the surface layer or the middle layer.

[0106] It should also be noted that the through-axis signal line in the embodiment of the present application can be a high-speed signal line. The through-axis signal line is designed according to the differential line impedance of 100Ω, and the impedance error is controlled within ±10%;

[0107] In addition, the width of the through-axis signal line is selected according to the different FPC design structures and the selected materials (the width of the through-axis signal line is shown in the shaded area in Figure 8a and Figure 8b). According to industry standards, the width of the through-axis signal line is generally selected in the range of 1.0-2.0mm.

[0108] Furthermore, for the wiring of the through-axis signal line on the FPC, the C-PHY3lane design or the D-PHY4lane design can be adopted.

[0109] The FPC in this embodiment is narrower than the traditional through-shaft circuit and will not occupy the space of the mechanical structure of the hinge, thereby improving the reliability of the hinge structure and reducing the difficulty of hinge design.

[0110] In a possible implementation, as shown in FIG8 a , the foldable electronic device further includes a board-to-board connector BTB provided corresponding to the first switch assembly 401 ;

[0111] The foldable electronic device further includes a board-to-board connector BTB provided corresponding to the first switch assembly 402 and the second switch assembly 701;

[0112] It should be noted that BTB is used to connect FPC. BTB realizes communication and data transmission between different modules or plug-in cards by connecting adapter boards with different types of backplanes or interfaces.

[0113] It is understandable that each through-axis signal line needs to be fastened with a BTB to connect to the FPC, so by reducing the number of through-axis signal lines, the number of BTBs can also be reduced.

[0114] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A foldable electronic device, characterized in that: The foldable electronic device comprises a main board, a sub-board, a processor, a first switch component, a first signal line, a first module and a second module; wherein the main board is connected to the sub-board via a rotating shaft, the first module and the second module work mutually exclusively, the processor is located on the main board, and the first module and the second module are located on the sub-board; The first switch component is connected between the processor and the first module through the first signal line to form a first branch; the first switch component is connected between the processor and the second module through the first signal line to form a second branch; the first signal line is located in the rotating shaft; The first switch component is used to conduct the first branch or the second branch.

2. The foldable electronic device according to claim 1, characterized in that: The first module is a first image acquisition module, and the second module is a first display module; wherein the first image acquisition module and the first display module are respectively applied to different types of screens of the foldable electronic device.

3. The foldable electronic device according to claim 2, characterized in that: The screen types of the foldable electronic device include an outer screen and an inner screen.

4. The foldable electronic device according to claim 2 or 3, characterized in that: The first switch assembly includes a first switch and a second switch, the first switch is located on the main board, and the second switch is located on the sub-board; The first switching end of the first switch is connected to the first image acquisition serial interface of the processor, the wiring end of the first switch is connected to the wiring end of the second switch through the first signal line, and the first switching end of the second switch is connected to the first image acquisition module to form the first branch; The second switching end of the first switch is connected to the first display serial interface of the processor, the connection end of the first switch is connected to the connection end of the second switch through the first signal line, and the second switching end of the second switch is connected to the first display module to form the second branch.

5. The foldable electronic device according to claim 3 or 4, characterized in that: The foldable electronic device further includes a second image acquisition module, and the first image acquisition module and the second image acquisition module are respectively applied to different types of screens of the foldable electronic device; The second image acquisition module is located on the main board, and the second image acquisition module is connected to the processor.

6. The foldable electronic device according to any one of claims 2 to 4, characterized in that: The foldable electronic device further includes a second switch component, a second signal line, a second image acquisition module and a second display module; wherein the first image acquisition module and the second image acquisition module are respectively applied to different types of screens of the foldable electronic device, the first display module and the second display module are respectively applied to different types of screens of the foldable electronic device, and the second image acquisition module and the second display module are located on the sub-board; The second switch component is connected between the processor and the second image acquisition module through the second signal line to form a third branch; the second switch component is connected between the processor and the second display module through the second signal line to form a fourth branch; The second switch component is used to conduct the third branch or the fourth branch.

7. The foldable electronic device according to claim 6, characterized in that: The second switch assembly includes a third switch and a fourth switch, the third switch is located on the main board, and the fourth switch is located on the sub-board; The first switching end of the third switch is connected to the second image acquisition serial interface of the processor, the wiring end of the third switch is connected to the wiring end of the fourth switch through the second signal line, and the first switching end of the fourth switch is connected to the second image acquisition module to form the third branch; The second switching end of the third switch is connected to the second display serial interface of the processor, the connection end of the third switch is connected to the connection end of the fourth switch through the second signal line, and the second switching end of the fourth switch is connected to the second display module, forming the The fourth branch.

8. The foldable electronic device according to claim 6 or 7, characterized in that: The foldable electronic device also includes a flexible printed circuit board (FPC); the FPC is connected between the main board and the sub-board, wherein the FPC is used to arrange the first signal line and the second signal line.

9. The foldable electronic device according to claim 8, characterized in that: The foldable electronic device further includes a board-to-board connector BTB arranged corresponding to the first switch component and the second switch component, wherein the BTB is used to connect the FPC.

Images