Electronic device

Abstract

The utility model discloses an electronic device, comprising: a frame body provided with a battery compartment; the second display screen covers the side, provided with the battery compartment, of the frame body, and the first display screen is arranged on the other side of the frame body; an electronic component provided in the housing; the first circuit board, the second circuit board, the third circuit board and the fourth circuit board are all arranged on the frame body, the second display screen is electrically connected with the third circuit board, the electronic component is electrically connected with the first circuit board, the first circuit board and the third circuit board are both located at the first end of the battery bin, and the second circuit board is located at the second end of the battery bin. The fourth circuit board extends from the first end of the battery compartment to the second end of the battery compartment; one end of the fourth circuit board is provided with a first branch board and a second branch board, one of the first circuit board and the third circuit board is electrically connected with the first branch board, the other one of the first circuit board and the third circuit board is welded with the second branch board, and the second circuit board is electrically connected with the other end of the fourth circuit board.

Description

Technical Field

[0001] This application belongs to the technical field of electronic devices, and particularly relates to an electronic device. Background Art

[0002] In the related art, the body of an electronic device is composed of a main screen, a secondary screen, and a middle frame (including a battery). The secondary screen circuit board extends from the position where the secondary board is located to the main board of the body. The secondary board is connected to the main board through an adapter circuit board. Both the secondary screen circuit board and the adapter circuit board occupy the space of the battery compartment, and multiple circuit boards need to be connected through connectors, increasing the thickness of the electronic device. Furthermore, based on the thin and light design of the electronic device, the thickness of the battery cannot be maximized, affecting the battery life of the electronic device. Summary of the Utility Model

[0003] This application aims to provide an electronic device, which at least solves the problem that the layout of the circuit boards affects the thickness of the electronic device and can cause the battery life to be affected.

[0004] To solve the above technical problems, this application is implemented as follows:

[0005] An embodiment of this application provides an electronic device, including: a frame body, the frame body is provided with a battery compartment; a display screen, including a first display screen and a second display screen, the second display screen covers one side of the frame body where the battery compartment is provided, and the first display screen is arranged on the other side of the frame body; electronic components, arranged in the frame body; a first circuit board, a second circuit board, a third circuit board, and a fourth circuit board, all arranged in the frame body, the second display screen is electrically connected to the third circuit board, the electronic components are electrically connected to the first circuit board, both the first circuit board and the third circuit board are located at the first end of the battery compartment, the second circuit board is located at the second end of the battery compartment, and the fourth circuit board extends from the first end of the battery compartment to the second end of the battery compartment; wherein, one end of the fourth circuit board is provided with a first branch board and a second branch board, one of the first circuit board and the third circuit board is electrically connected to the first branch board, the other of the first circuit board and the third circuit board is welded to the second branch board, and the second circuit board is electrically connected to the other end of the fourth circuit board.

[0006] In an embodiment of the present application, the electronic device includes a housing, a display screen and electronic components disposed on the housing. The display screen includes a first display screen and a second display screen, realizing the main and secondary screen displays of the electronic device. The electronic components are electrically connected to a first circuit board, the second display screen is electrically connected to a third circuit board, one end of a fourth circuit board is connected to the first circuit board and the third circuit board, and the other end of the fourth circuit board is connected to a second circuit board, thereby realizing the electrical connection of multiple components on the electronic device and achieving the overall control of the electronic device. A battery compartment for placing a battery is provided on the housing. The first circuit board and the third circuit board are disposed at the first end of the battery compartment, the second circuit board is disposed at the second end of the battery compartment, and the fourth circuit board passes through the battery compartment to respectively connect the first circuit board, the third circuit board and the second circuit board. Wherein, a first branch board and a second branch board are provided at one end of the fourth circuit board. One of the first circuit board and the third circuit board is electrically connected to the first branch board, and the other of the first circuit board and the third circuit board is welded to the second branch board. On the one hand, the electrical connection of the first circuit board, the second circuit board and the third circuit board is realized through the arrangement of one fourth circuit board, and there is no need to separately provide circuit boards passing through the battery compartment corresponding to the first circuit board and the third circuit board to be electrically connected to the second circuit board, reducing the occupied area of the battery compartment, and thus increasing the capacity of the battery. On the other hand, the other of the first circuit board and the third circuit board is welded to the second branch board, reducing the use of connectors, and thus reducing the occupation of the overall thickness of the electronic device by the connectors, so as to ensure the capacity of the battery while realizing the thin and light design of the electronic device and improving the battery life of the electronic device.

[0007] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0009] Figure 1 is one of the schematic diagrams of the electronic device according to an embodiment of the present application;

[0010] Figure 2 is another schematic diagram of the electronic device according to an embodiment of the present application;

[0011] Figure 3 is a third schematic diagram of the electronic device according to an embodiment of the present application;

[0012] Figure 4 is a fourth schematic diagram of the electronic device according to an embodiment of the present application;

[0013] Figure 5It is the fifth schematic diagram of the electronic device according to the embodiment of the present application;

[0014] Figure 6 It is the sixth schematic diagram of the electronic device according to the embodiment of the present application;

[0015] Figure 7 It is the seventh schematic diagram of the electronic device according to the embodiment of the present application;

[0016] Figure 8 It is the eighth schematic diagram of the electronic device according to the embodiment of the present application;

[0017] Figure 9 It shows Figure 8 A partial structural schematic diagram of the electronic device of the illustrated embodiment;

[0018] Figure 10 It is the ninth schematic diagram of the electronic device according to the embodiment of the present application;

[0019] Figure 11 It shows Figure 10 A partial structural schematic diagram of the electronic device of the illustrated embodiment.

[0020] Reference numerals:

[0021] 1 housing, 12 first housing, 120 battery compartment, 122 first avoidance groove, 124 installation groove, 126 second avoidance groove, 128 through hole, 14 second housing, 2 display screen, 20 first display screen, 22 second display screen, 3 electronic components, 30 speaker, 32 card holder, 41 first circuit board, 42 second circuit board, 43 third circuit board, 44 fourth circuit board, 440 first branch board, 442 second branch board, 45 fifth circuit board, 46 sixth circuit board, 47 seventh circuit board, 5 first connector, 6 second connector, 7 battery, 8 hinge assembly. Detailed implementation manners

[0022] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the protection scope of the present application.

[0023] The features of the terms "first" and "second" in the specification and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0025] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] The following will describe Figures 1 - 11 an electronic device according to an embodiment of the present application.

[0027] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, an electronic device according to some embodiments of the present application includes: a housing 1, the housing 1 is provided with a battery compartment 120; a display screen 2, including a first display screen 20 and a second display screen 22, the second display screen 22 covers one side of the housing 1 where the battery compartment 120 is provided, and the first display screen 20 is provided on the other side of the housing 1; electronic components 3, provided in the housing 1; a first circuit board 41, a second circuit board 42, a third circuit board 43, and a fourth circuit board 44, all provided in the housing 1, the second display screen 22 is electrically connected to the third circuit board 43, the electronic components 3 are electrically connected to the first circuit board 41, the first circuit board 41 and the third circuit board 43 are both located at the first end of the battery compartment 120, the second circuit board 42 is located at the second end of the battery compartment 120, and the fourth circuit board 44 extends from the first end of the battery compartment 120 to the second end of the battery compartment 120; wherein, one end of the fourth circuit board 44 is provided with a first branch board 440 and a second branch board 442, one of the first circuit board 41 and the third circuit board 43 is electrically connected to the first branch board 440, the other of the first circuit board 41 and the third circuit board 43 is soldered to the second branch board 442, and the second circuit board 42 is electrically connected to the other end of the fourth circuit board 44.

[0028] In an embodiment of the present application, the electronic device includes a housing 1, a display screen 2 and electronic components 3 disposed on the housing 1. The display screen 2 includes a first display screen 20 and a second display screen 22, realizing the main and secondary screen displays of the electronic device. The electronic components 3 are electrically connected to a first circuit board 41, the second display screen 22 is electrically connected to a third circuit board 43, one end of a fourth circuit board 44 is connected to the first circuit board 41 and the third circuit board 43, and the other end of the fourth circuit board 44 is connected to a second circuit board 42, thereby realizing the electrical connection of multiple components on the electronic device and achieving the overall control of the electronic device. A battery compartment 120 for placing a battery 7 is provided on the housing 1. The first circuit board 41 and the third circuit board 43 are disposed at the first end of the battery compartment 120, the second circuit board 42 is disposed at the second end of the battery compartment 120, and the fourth circuit board 44 passes through the battery compartment 120 to respectively connect the first circuit board 41, the third circuit board 43 and the second circuit board 42. Among them, a first branch board 440 and a second branch board 442 are provided at one end of the fourth circuit board 44. One of the first circuit board 41 and the third circuit board 43 is electrically connected to the first branch board 440, and the other of the first circuit board 41 and the third circuit board 43 is welded to the second branch board 442. On the one hand, the electrical connection of the first circuit board 41, the second circuit board 42 and the third circuit board 43 is realized through the setting of one fourth circuit board 44, and there is no need to separately provide circuit boards passing through the battery compartment 120 corresponding to the first circuit board 41 and the third circuit board 43 to be electrically connected to the second circuit board 42, reducing the occupied area of the battery compartment 120, and thus increasing the capacity of the battery 7. On the other hand, the other of the first circuit board 41 and the third circuit board 43 is welded to the second branch board 442, reducing the use of connectors, and thus reducing the occupation of the overall thickness of the electronic device by the connectors, so as to ensure the capacity of the battery 7 while realizing the thin and light design of the electronic device and improving the battery life of the electronic device.

[0029] It can be understood that the first circuit board 41 is a secondary board, the second circuit board 42 is a main board, and the fourth circuit board 44 is a flexible circuit board for connecting the main and secondary boards.

[0030] It should be noted that the first end of the battery compartment 120 and the second end of the battery compartment 120 are opposite ends of the battery compartment 120.

[0031] Such as Figure 3 and Figure 4 As shown in, according to some embodiments of the present application, optionally, the electronic device further includes: a first connector 5, and the third circuit board 43 is electrically connected to the first branch board 440 through the first connector 5; a second connector 6, and the second circuit board 42 is electrically connected to the fourth circuit board 44 through the second connector 6.

[0032] In this embodiment, the electronic device further includes a first connector 5 and a second connector 6. The third circuit board 43 is electrically connected to the first branch board 440 through the first connector 5, and the first circuit board 41 is welded to the second branch board 442, which can not only reduce the occupation of the thickness space of the electronic device by the interconnection between multiple circuit boards, but also improve the convenience and detachable property of the connection between the third circuit board 43 and the fourth circuit board 44. The second circuit board 42 is electrically connected to the fourth circuit board 44 through the second connector 6, which improves the convenience and detachable property of the connection between the second circuit board 42 and the fourth circuit board 44.

[0033] As Figure 9 shown, according to some embodiments of the present application, optionally, a first avoidance groove 122 is provided on the bottom wall of the battery compartment 120, and the fourth circuit board 44 extends from the first end of the battery compartment 120 to the second end of the battery compartment 120 through the first avoidance groove 122.

[0034] In this embodiment, a first avoidance groove 122 is provided on the bottom wall of the battery compartment 120. When the fourth circuit board 44 passes through the battery compartment 120, it is arranged in the first avoidance groove 122, thereby reducing the occupation of the space in the battery compartment 120, increasing the capacity of the battery 7, and improving the battery life of the electronic device.

[0035] As Figure 6 shown, according to some embodiments of the present application, optionally, the housing 1 includes: a first housing 12, a battery compartment 120 is provided on the first side of the first housing 12, the first circuit board 41, the second circuit board 42, the third circuit board 43 and the fourth circuit board 44 are all arranged in the first housing 12, and the electronic component 3 is arranged in the first housing 12; a second housing 14, which is rotatably connected to the first housing 12 so that the electronic device has an unfolded state and a folded state; wherein, the first display screen 20 covers the first housing 12 and the second housing 14 on the second side of the first housing 12, and the second display screen 22 covers the first side of the first housing 12.

[0036] In this embodiment, the housing 1 includes a first housing 12 and a second housing 14, and the first housing 12 and the second housing 14 are rotatably connected so that the electronic device can be unfolded and folded. When the electronic device is in the unfolded state, the first housing 12 and the second housing 14 are laid flat, increasing the display area of the electronic device. When the electronic device is in the folded state, the first housing 12 and the second housing 14 are stacked to reduce the overall volume of the electronic device, facilitating the carrying of the electronic device.

[0037] Optionally, the first display screen 20 is the main screen of the electronic device, and the second display screen 22 is the secondary screen of the electronic device.

[0038] Optionally, the first display screen 20 is a flexible screen.

[0039] It should be noted that the first side and the second side of the first housing 12 are two opposite sides of the first housing 12 in the thickness direction.

[0040] As Figure 1 and Figure 9 shown, according to some embodiments of the present application, optionally, the electronic device further includes: a fifth circuit board 45, electrically connected to the first display screen 20, the fifth circuit board 45 is disposed on the second side of the first housing 12, at the bottom of the first display screen 20, and in the thickness direction of the first housing 12, the fourth circuit board 44 is disposed to avoid the fifth circuit board 45.

[0041] In this embodiment, the electronic device further includes a fifth circuit board 45, and the fifth circuit board 45 is electrically connected to the first display screen 20 to implement the control of the first display screen 20. Among them, the fifth circuit board 45 is located on the second side of the first housing 12, and in the thickness direction of the first housing 12, the fourth circuit board 44 is disposed to avoid the fifth circuit board 45, thereby reducing the overall occupation of the thickness space of the battery compartment 120 by the fifth circuit board 45 and the fourth circuit board 44. While the electronic device is being designed to be thinner and lighter, the volume of the battery 7 in the battery compartment 120 is ensured, thereby ensuring the capacity of the battery 7, and also ensuring the minimum thickness of the first housing 12, thereby ensuring the strength of the first housing 12 and reducing the risk of bending deformation of the electronic device.

[0042] Optionally, the fifth circuit board 45 includes a main screen circuit board.

[0043] Optionally, the fifth circuit board 45 is a flexible circuit board.

[0044] As Figure 9 shown, according to some embodiments of the present application, optionally, an installation groove 124 is provided on the second side of the first housing 12, and the fifth circuit board 45 is disposed in the installation groove 124.

[0045] In this embodiment, an installation groove 124 is provided on the second side of the first housing 12, and the fifth circuit board 45 is disposed in the installation groove 124, thereby reducing the space occupied by the fifth circuit board 45 in the thickness direction of the first housing 12 to reduce the overall thickness of the electronic device and achieve the thin and light design of the electronic device.

[0046] As Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, according to some embodiments of the present application, optionally, the electronic device further includes: a hinge assembly 8, the first housing 12 and the second housing 14 are rotatably connected through the hinge assembly 8; a sixth circuit board 46 disposed in the second housing 14; a seventh circuit board 47 passing through the hinge assembly 8, and both ends of the seventh circuit board 47 are respectively connected to the second circuit board 42 and the sixth circuit board 46; wherein, at least a part of the seventh circuit board 47 located within the first housing 12 is located on the bottom wall of the battery compartment 120.

[0047] In this embodiment, the electronic device further includes a hinge assembly 8, a sixth circuit board 46 and a seventh circuit board 47. The first housing 12 and the second housing 14 are rotatably connected through the hinge assembly 8 to realize the unfolding and folding of the electronic device. The sixth circuit board 46 is disposed within the second housing 14 and is electrically connected to the second circuit board 42 through the seventh circuit board 47, thereby realizing the electrical connection between the first housing 12 and the second housing 14 and achieving the overall control between the first housing 12 and the second housing 14. Among them, the seventh circuit board 47 passes through the hinge assembly 8 and extends to the first housing 12 and the second housing 14 to respectively connect the second circuit board 42 and the sixth circuit board 46. At the same time, at least a part of the seventh circuit board 47 located within the first housing 12 is disposed on the bottom wall of the battery compartment 120, and thus is located at the bottom of the battery 7, avoiding occupying the top space of the battery compartment 120, so that the gap at the top of the battery compartment 120 is minimized, thereby reducing the overall thickness of the electronic device.

[0048] Optionally, the sixth circuit board 46 is the main board of the second housing 14, and the seventh circuit board 47 is a flexible circuit board of the rotating shaft.

[0049] It can be understood that in the related art, when the adapter circuit board, the secondary screen circuit board and the rotating shaft circuit board are disposed on the top of the battery and the main screen circuit board is disposed at the bottom of the battery, the circuit board (such as the adapter circuit board, the secondary screen circuit board and the rotating shaft circuit board) is located between the battery and the secondary screen, so that a certain safety gap needs to be reserved between the circuit board and the secondary screen, which will lead to an increase in the overall thickness of the electronic device. However, in the embodiments proposed in the present application, as Figure 9 shown, a gap A is reserved between the bottom of the second display screen 22 and the battery 7, and a gap B is reserved between the first display screen 20 and the first housing 12. By disposing the seventh circuit board 47 on the bottom wall of the battery compartment 120, the gap A between the bottom of the second display screen 22 and the battery 7 can be reduced, thereby reducing the overall thickness of the electronic device.

[0050] As Figure 8 shown, according to some embodiments of the present application, optionally, the bottom wall of the battery compartment 120 is provided with a second avoidance groove 126, and the seventh circuit board 47 is disposed within the second avoidance groove 126.

[0051] In this embodiment, a second avoidance groove 126 is provided on the bottom wall of the battery compartment 120, and the seventh circuit board 47 is disposed in the second avoidance groove 126, which can reduce the occupation of the space of the battery compartment 120 by the seventh circuit board 47. Furthermore, it is not necessary to reduce the capacity of the battery 7, and while the electronic device is being designed to be thinner and lighter, the battery life of the battery 7 is ensured.

[0052] As Figure 10 and Figure 11 shown, according to some embodiments of the present application, optionally, a through hole 128 is provided on the first housing 12, and the through hole 128 communicates with the battery compartment 120; a part of the seventh circuit board 47 penetrates through the through hole 128; wherein, the seventh circuit board 47 includes a multi-layer board body, and the part of the multi-layer board body located in the through hole 128 is adhesively connected.

[0053] In this embodiment, a through hole 128 is provided on the first housing 12, and the through hole 128 communicates with the battery compartment 120. Furthermore, a part of the seventh circuit board 47 penetrates through the through hole 128 to extend to the first housing 12 and the second housing 14. Wherein, the seventh circuit board 47 includes a multi-layer board body, and the part of the multi-layer board body located in the through hole 128 is adhesively connected. In this way, less glue overflows during the adhesive pressing process, so when the seventh circuit board 47 is adhered to the first housing 12, the adhesive width can be reduced, and further the width of the first housing 12 for adhering the seventh circuit board 47 can be reduced, so as to increase the width of the battery compartment 120, and further make the size of the battery 7 in the width direction extremely large.

[0054] Optionally, the multi-layer board body is adhesively connected by cold glue. Cold glue refers to glue that can be used without heating, and usually refers to glue with strong viscosity at room temperature.

[0055] Optionally, the cold glue includes: epoxy resin glue, polyurethane glue, etc.

[0056] Optionally, the adhesive width of the seventh circuit board 47 at the through hole 128 is greater than or equal to 1.5 mm and less than or equal to 2 mm.

[0057] Specifically, as Figure 11 shown, the adhesive width H of the seventh circuit board 47 at the through hole 128 is 1.5 mm.

[0058] As Figure 10 and Figure 11 shown, according to some embodiments of the present application, optionally, a part of the seventh circuit board 47 is bent from the through hole 128 towards the bottom wall of the battery compartment 120.

[0059] In this embodiment, the seventh circuit board 47 includes a bending portion to reduce the static bending angle of the seventh circuit board 47, so that the seventh circuit board 47 can be routed along the bottom wall of the battery compartment 120, maximizing the dimension of the battery 7 in the thickness direction, thereby achieving a high waterproof level, thinning the entire device and increasing the capacity of the battery 7.

[0060] like Figure 1 As shown, according to some embodiments of the present application, optionally, the electronic component 3 includes at least one of a card holder 32, a speaker 30, and an antenna.

[0061] In this embodiment, the electronic component 3 may be at least one of a card holder 32 , a speaker 30 , and an antenna. Optionally, the card holder 32 is connected to the first circuit board 41 by welding.

[0062] In specific applications, the present application provides a new flexible printed circuit (FPC) transfer solution that meets the requirements of long battery life and IP68 waterproof and dustproof in the extremely thin thickness space of a folding machine.

[0063] Specifically, the Subscriber Identity Module (SIM) signal is connected to the main board (e.g., the second circuit board 42) by means of soft and hard welding, and the board-to-board connector (BTB) connection is cancelled, which reduces the connection height and the thickness of the whole machine. The SIM card signal and the secondary screen signal are integrated into an FPC (e.g., the fourth circuit board 44), and transferred to the main board through a BTB, which reduces the use of one BTB, improves the stacking utilization rate, and improves the battery life. The auxiliary body main and auxiliary board connection FPC (e.g., the fourth circuit board 44) and the main and auxiliary body transfer FPC (e.g., the seventh circuit board 47) are placed under the battery 7, which improves the stacking utilization rate and the thickness of the battery 7 and improves the battery life. The non-layered area of the main and auxiliary body transfer FPC three-layer board adopts a 1.5mm cold glue bonding solution to meet the IPX8 (waterproof grade, where IPX is Ingress Protection) waterproof requirements, and is arranged under the battery 7 to improve the thickness of the battery 7 and improve the battery life.

[0064] Optionally, in this application, the signals of the secondary screen (such as the second display screen 22) and signals such as the SIM card are integrated into one FPC (such as the fourth circuit board 44). Two branches (such as the first branch board 440 and the second branch board 442) are separated from one end of the FPC. One way is connected to the secondary board (such as the first circuit board 41) through a combination of soft and hard soldering. Compared with the traditional BTB connection method, the thickness of the whole machine is made extremely thin. The other way is to connect the signal of the secondary screen (such as connecting the third circuit board 43) by using BTB; the other end of the FPC integrates the SIM card signal and the secondary screen signal onto one BTB, connects to the main board, and routes the signal through the middle frame slot (such as the first avoidance slot 122) under the battery 7, making the thickness dimension of the battery 7 extremely large, so as to achieve the purpose of reducing the thickness of the whole machine and increasing the capacity of the battery 7.

[0065] Optionally, in this application, the local non - delaminated area of the FPC of the main and secondary body rotating shafts uses cold glue bonding technology to replace the traditional thermosetting glue, achieving the narrowest width of 1.5 mm in the industry. While meeting the folding life of the FPC, the slope of the middle frame (such as the first frame body 12) is made the narrowest, making the width dimension of the battery 7 extremely large. The delaminated area of the FPC is subjected to pre - bending technology, making the static bending angle of the FPC extremely small, and routing the signal through the middle frame slot (such as the second avoidance slot 126) under the battery 7, making the thickness dimension of the battery 7 extremely large, so as to achieve the purpose of IPX8 waterproof, reducing the thickness of the whole machine and increasing the capacity of the battery 7.

[0066] Specifically, the electronic device includes a main - secondary board transfer FPC (such as the fourth circuit board 44), a secondary screen FPC (such as the third circuit board 43), a secondary body secondary board (such as the first circuit board 41), and a SIM card holder 32. The secondary screen FPC and the transfer FPC are connected through a BTB on the secondary body secondary board side (such as the first connector 5), and the signal is transmitted to the main - secondary board transfer FPC through the connector. The main - secondary board transfer FPC and the main board are connected through a BTB on the main board side (such as the second connector 6), transferring the secondary screen signal to the main board, thus realizing the transfer of the secondary screen signal to the main board end; the SIM card holder 32 is soldered to the secondary body secondary board through Surface Mount Technology (SMT). The secondary body secondary board and the main - secondary board transfer FPC are connected through a combination of soft and hard soldering to realize communication, thereby transmitting the SIM card holder 32 signal to the main - secondary board transfer FPC. The other end of the main - secondary board transfer FPC transmits the SIM card holder 32 signal to the main board through BTB connection, thus realizing the transfer of the SIM card holder 32 signal to the main board. This solution outputs the two - way signals of the secondary screen and the SIM card holder 32 on the secondary board side through the main - secondary board transfer FPC through one BTB, thereby reducing one BTB, improving the stacking utilization rate, and improving the battery life; using the thermocompression soldering method can reduce the thickness by 0.6 mm compared with using the BTB connection method, and further reduce the thickness of the whole machine.

[0067] Among them, the rotating shaft FPC (such as the seventh circuit board 47) is connected to the main and auxiliary board connection FPC, passing through the slot in the middle frame under the battery 7, avoiding the transfer FPC of the main screen signal and circuit in the thickness direction (such as the fifth circuit board 45), achieving spatial sharing in the thickness direction. There are no FPC and other components above the battery 7, and the under-screen gap can be minimized. Therefore, the thickness dimension of the battery 7 can be made extremely large compared to the traditional solution, meeting the user's experience requirements for large battery life of the folding machine.

[0068] It should be noted that the electronic device includes mobile phones, tablet computers, laptop computers, e-books, etc., and all electronic products using the hinge design can use this solution for optimization design.

[0069] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0070] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that, Comprising: A housing, the housing being provided with a battery compartment; A display screen, including a first display screen and a second display screen, the second display screen covering one side of the housing where the battery compartment is provided, and the first display screen being provided on the other side of the housing; Electronic components, provided in the housing; A first circuit board, a second circuit board, a third circuit board, and a fourth circuit board, all provided in the housing, the second display screen being electrically connected to the third circuit board, the electronic components being electrically connected to the first circuit board, both the first circuit board and the third circuit board being located at the first end of the battery compartment, the second circuit board being located at the second end of the battery compartment, and the fourth circuit board extending from the first end of the battery compartment to the second end of the battery compartment; Wherein, one end of the fourth circuit board is provided with a first branch board and a second branch board, one of the first circuit board and the third circuit board being electrically connected to the first branch board, and the other of the first circuit board and the third circuit board being welded to the second branch board, and the second circuit board being electrically connected to the other end of the fourth circuit board.

2. The electronic device according to claim 1, characterized in that, Further comprising: A first connector, the third circuit board being electrically connected to the first branch board through the first connector; A second connector, the second circuit board being electrically connected to the fourth circuit board through the second connector.

3. The electronic device according to claim 1, wherein The bottom wall of the battery compartment is provided with a first avoidance groove, and the fourth circuit board extends from the first end of the battery compartment to the second end of the battery compartment through the first avoidance groove.

4. The electronic device according to any one of claims 1 to 3, characterized in that The housing includes: A first housing, a first side of the first housing being provided with the battery compartment, the first circuit board, the second circuit board, the third circuit board, and the fourth circuit board all being provided in the first housing, and the electronic components being provided in the first housing; A second housing, rotatably connected to the first housing, so that the electronic device has an unfolded state and a folded state; Wherein, the first display screen covers the first housing and the second housing on the second side of the first housing, and the second display screen covers the first side of the first housing.

5. The electronic device according to claim 4, characterized in that, Further comprising: A fifth circuit board, electrically connected to the first display screen, the fifth circuit board being provided on the second side of the first housing, at the bottom of the first display screen, and in the thickness direction of the first housing, the fourth circuit board is arranged to avoid the fifth circuit board.

6. The electronic device according to claim 5, wherein The second side of the first housing is provided with a mounting groove, and the fifth circuit board is provided in the mounting groove.

7. The electronic device according to claim 4, wherein Further comprising: A hinge assembly, the first housing and the second housing being rotatably connected through the hinge assembly; A sixth circuit board, provided in the second housing; A seventh circuit board, passing through the hinge assembly, and both ends of the seventh circuit board are respectively connected to the second circuit board and the sixth circuit board; Wherein, at least a part of the seventh circuit board located in the first housing is located on the bottom wall of the battery compartment.

8. The electronic device according to claim 7, wherein The bottom wall of the battery compartment is provided with a second avoidance groove, and the seventh circuit board is provided in the second avoidance groove.

9. The electronic device according to claim 7, wherein The first housing is provided with a through hole, the through hole communicating with the battery compartment, and a part of the seventh circuit board passes through the through hole; Among them, the seventh circuit board includes a multi-layer board body, and the portions of the multi-layer board bodies located in the through holes are adhesively connected.

10. The electronic device according to claim 9, wherein A part of the seventh circuit board is bent from the through hole towards the bottom wall of the battery compartment.

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