WO2024022140A1 - Foldable electronic device - Google Patents

Abstract

A foldable electronic device, at least comprising a first middle frame portion (110), a second middle frame portion (120) and a rotary shaft assembly (130), wherein the first middle frame portion (110) and the second middle frame portion (120) are rotatably connected by means of the rotary shaft assembly (130). The foldable electronic device further comprises a display screen (140), a main board (160), a first flexible circuit board (171) and a second flexible circuit board (172), wherein the display screen (140) and the main board (160) are positioned at two sides of the first middle frame portion (110) and the second middle frame portion (120); the main board (160) comprises a first main board (161) and a second main board (162); one end of the first flexible circuit board (171) is electrically connected to the first main board (161), and the other end of the first flexible circuit board (171) penetrates the first middle frame portion (110) and is electrically connected to the display screen (140); and one end of the second flexible circuit board (172) is electrically connected to the display screen (140), and the other end of the second flexible circuit board (172) penetrates the second middle frame portion (120) and is electrically connected to the second main board (162). In this way, the situation of the integrity of an electrical performance signal of the flexible circuit boards (171, 172) being influenced when the flexible circuit boards (171, 172) penetrate the rotary shaft assembly (130) can be avoided, such that the influence on the use experience of the flexible display screen (140) can be avoided.

Description

Foldable electronic devices

This application claims priority to the Chinese patent application filed with the China Patent Office on July 25, 2022, with application number 202210878953.2 and the application name "Foldable Electronic Devices", the entire content of which is incorporated into this application by reference.

Technical field

Embodiments of the present application relate to the field of terminal technology, and in particular to a foldable electronic device.

Background technique

With the explosive growth of electronic devices such as smartphones or tablets (portable equipment, PAD), electronic devices have more and more functions. Different sizes of display screens of electronic devices will lead to different experiences in using related functions of the electronic devices. The display area of the display screen of electronic devices is getting larger and larger. However, when the display screen area is larger, the overall size of the electronic device will be larger, making it inconvenient to carry. With the development of display technology, flexible display bodies can be manufactured. Compared with traditional screens, flexible display bodies have significant advantages. For example, flexible display bodies are bendable and flexible, and can be applied to foldable electronic devices to achieve flexible changes in display area. The folded electronic device itself is small in size and easy to carry.

In related technologies, foldable electronic devices generally include a main device part, an auxiliary device part and a flexible display body. The main device part and the auxiliary device part are rotationally connected through a shaft assembly, and the flexible display body covers the main device part. On the equipment part, rotating shaft assembly and auxiliary equipment part. When electrical signals need to be transmitted between the flexible display screen on the main device part and the flexible display screen on the auxiliary device part, a flexible circuit board is generally provided between the two. Specifically, one end of the flexible circuit board is connected to the main device part. The flexible display screen body on the equipment part is electrically connected, and the other end of the flexible circuit board passes through the rotating shaft assembly and is electrically connected to the flexible display screen body on the auxiliary equipment part.

However, in the above solution, when the flexible circuit board passes through the rotating shaft assembly, the space on the rotating shaft assembly is limited, which easily affects the electrical performance and signal integrity of the flexible circuit board, thereby affecting the use experience of the flexible display body. In addition, passing the flexible circuit board through the rotating shaft assembly will damage the structure of the rotating shaft assembly itself, affecting the structural reliability of the rotating shaft assembly, thereby affecting the overall reliability of the foldable electronic device, and thus sacrificing the product of the foldable electronic device. Competitiveness.

Contents of the invention

Embodiments of the present application provide a foldable electronic device that can avoid affecting the electrical performance and signal integrity of the flexible circuit board, thereby avoiding affecting the use experience of the flexible display body. At the same time, it can also avoid affecting the structural reliability of the rotating shaft assembly, thereby avoiding affecting the overall reliability of the foldable electronic device, and thereby avoiding sacrificing the product competitiveness of the foldable electronic device.

An embodiment of the present application provides a foldable electronic device, which at least includes: a first middle frame part, a second middle frame part, and a rotating shaft assembly; the first middle frame part and the second middle frame part Rotationally connected through the rotating shaft assembly; it also includes: a display screen body, a main board, a first flexible circuit board and a second flexible circuit board; the display screen body and the main board are located in the first middle frame part and the third flexible circuit board. Both sides of the middle frame; the main board includes: a first main board and a second main board; one end of the first flexible circuit board is electrically connected to the first main board, and the other end of the first flexible circuit board passes through The first middle frame part is electrically connected to the display screen body; one end of the second flexible circuit board is electrically connected to the display screen body, and the other end of the second flexible circuit board passes through the first The two middle frame parts are electrically connected to the second motherboard.

In the foldable electronic device provided by the embodiment of the present application, in the foldable electronic device, the first mainboard and the display body are electrically connected through the first flexible circuit board passing through the first middle frame portion, and the display body and the second display body are electrically connected. The main boards are electrically connected through the second flexible circuit board passing through the second middle frame. In this way, compared with the prior art in which the flexible circuit board passes through the rotating shaft assembly, the first main board and the second main board and the first main board are connected. With regard to the electrical connection with the display body, embodiments of the present application can prevent the flexible circuit board from affecting the electrical performance and signal integrity of the flexible circuit board when passing through the rotating shaft assembly, thereby avoiding affecting the use experience of the flexible display body. Moreover, the embodiments of the present application do not require a flexible circuit board to pass through the rotating shaft assembly, and will not damage the structure of the rotating shaft assembly itself. Therefore, it can avoid affecting the structural reliability of the rotating shaft assembly, thereby avoiding affecting the overall reliability of the foldable electronic device. sex, thereby avoiding sacrificing the product competitiveness of foldable electronic devices.

In a possible implementation, the display screen body includes: a display panel and a screen body reinforcing plate; the screen body reinforcing plate is located between the display screen body, the first middle frame part and the third Between the two middle frames. By disposing the display panel toward the first middle frame portion and the second middle frame portion A screen reinforcement plate is provided on one side of the screen, and the screen reinforcement plate can increase the structural strength of the display panel.

In a possible implementation, the screen reinforcement panel includes: a first screen reinforcement panel and a second screen reinforcement panel; and the first screen reinforcement panel and the second screen reinforcement panel A back plate is provided between the body reinforcing plates; the first screen body reinforcing plate is set opposite to the first middle frame part, the back plate is set opposite to the rotating shaft assembly, and the second screen body reinforcing plate is set opposite to the first middle frame part. The strong plate is arranged opposite to the second middle frame part. In this way, when the first middle frame part and the second middle frame part realize relative rotation through the rotating shaft assembly, the back plate and the rotating shaft assembly are arranged oppositely, which can prevent the end of the rotating shaft assembly close to the display body from being in direct contact with the display panel, thereby enabling Prevent the shaft component from causing wear on the display panel during rotation. Therefore, by providing a backplane, the display panel can be protected to a certain extent.

In a possible implementation, the backboard is a bamboo book.

In a possible implementation, a first groove is opened on a side of the first screen reinforcement plate facing the first middle frame portion, and a first conductive member is disposed in the first groove; A second groove is formed on a side of the second screen reinforcement plate facing the second middle frame portion, and a second conductive member is disposed in the second groove; the first conductive member and the The first mainboard is electrically connected, the second conductive member is electrically connected to the second mainboard, and the first conductive member is electrically connected to the second conductive member.

By disposing the first conductive member in the first groove on the first screen reinforcement plate, the first conductive member is electrically connected to the first main board, and the first conductive member is disposed in the second groove on the second screen reinforcement plate. Two conductive members, the second conductive member is electrically connected to the second mainboard, and the first conductive member is electrically connected to the second conductive member, so that the first mainboard and the second mainboard can be realized through the first conductive member and the second conductive member. electrical connection between them.

In a possible implementation, the method further includes: a third flexible circuit board, a fourth flexible circuit board and a fifth flexible circuit board; the first conductive member and the first main board are connected through the third flexible circuit board. The circuit board is electrically connected, the second conductive member and the second main board are electrically connected through the fourth flexible circuit board, and the first conductive member and the second conductive member are electrically connected through the third conductive member. Five flexible circuit boards with electrical connections.

The electrical connection between the first conductive part and the first main board can be realized through the third flexible circuit board, the electrical connection between the second conductive part and the second main board can be realized through the fourth flexible circuit board, and the electrical connection between the second conductive part and the second main board can be realized through the fifth flexible circuit board. The circuit board can realize the electrical connection between the first conductive component and the second conductive component.

In a possible implementation, it further includes: a first connector and a second connector; the first connector is provided on the first motherboard, and the second connection is provided on the display screen body. device; one end of the first flexible circuit board is electrically connected to the first mainboard through the first connector, and the other end of the first flexible circuit board is electrically connected to the display screen body through a second connector .

The first connector can conduct electrical signals between the first mainboard and the first flexible circuit board, and the second connector can conduct electrical signals between the display body and the first flexible circuit board. effect.

In a possible implementation, it also includes: a screen flexible circuit board; the screen flexible circuit board is located on the display screen; and one end of the screen flexible circuit board is connected to the second connector Electrically connected, the other end of the screen flexible circuit board is electrically connected to the second flexible circuit board.

By arranging the screen flexible circuit board on the display screen body, the screen body flexible circuit board can play a role in conducting electrical signals between the second connector and the second flexible circuit board.

In a possible implementation, one end of the first flexible circuit board and the first mainboard are electrically connected through welding, buckling or spring connection; the other end of the first flexible circuit board and the first main board are electrically connected. The display screen bodies are electrically connected through welding, buckling or spring connection.

In a possible implementation, the first flexible circuit board and the second flexible circuit board are integrated. By designing the first flexible circuit board and the second flexible circuit board as one piece, poor electrical connection between the first flexible circuit board and the second flexible circuit board can be avoided, thereby improving the efficiency of the first flexible circuit board and the second flexible circuit board. Reliability of electrical connections between flexible circuit boards.

In a possible implementation, it also includes: a screen flexible circuit board; the screen flexible circuit board is located on the display screen body; and one end of the screen flexible circuit board is connected to the first flexible circuit The other end of the screen flexible circuit board is electrically connected to the second flexible circuit board.

By arranging the screen flexible circuit board on the display screen, the screen flexible circuit board can conduct electrical signals between the first flexible circuit board and the second flexible circuit board.

In a possible implementation, the first flexible circuit board and the screen flexible circuit board are an integral part; or the second flexible circuit board and the screen flexible circuit board are an integral part; or , the first flexible circuit board, the screen flexible circuit board and the second flexible circuit board are all one piece.

By designing the first flexible circuit board and the screen flexible circuit board as one piece, it is possible to avoid the problem that the first flexible circuit board and the screen flexible circuit If the electrical connection between the boards is poor, the reliability of the electrical connection between the first flexible circuit board and the screen flexible circuit board can be improved. By designing the second flexible circuit board and the screen flexible circuit board as one piece, poor electrical connection between the second flexible circuit board and the screen flexible circuit board can be avoided, thereby improving the performance of the second flexible circuit board and the screen body. Reliability of electrical connections between flexible circuit boards. By designing the first flexible circuit board, the screen flexible circuit board and the second flexible circuit board as one piece, it is possible to avoid gaps between the first flexible circuit board and the screen flexible circuit board and between the screen flexible circuit board and the second flexible circuit board. If the electrical connection between the circuit boards is poor, the reliability of the electrical connection between the first flexible circuit board and the screen flexible circuit board and between the second flexible circuit board and the screen flexible circuit board can be improved.

In a possible implementation, the method further includes: a third connector; the third connector is provided on the second motherboard; and one end of the second flexible circuit board is connected to the second flexible circuit board through the second connector. The display screen is electrically connected, and the other end of the second flexible circuit board is electrically connected to the second mainboard through the third connector.

By disposing the third connector on the second main board, the third connector can play a role in conducting electrical signals between the second flexible circuit board and the second main board. In addition, the second connector can also serve to conduct electrical signals between the second flexible circuit board and the display body.

In a possible implementation, one end of the second flexible circuit board and the display screen body are electrically connected through welding, buckling or spring connection; the other end of the second flexible circuit board and The second motherboards are electrically connected through welding, buckling or popping.

In a possible implementation, the method further includes: a sixth flexible circuit board; one end of the sixth flexible circuit board is electrically connected to the first mainboard, and the other end of the sixth flexible circuit board passes through the The rotating shaft assembly is electrically connected to the second mainboard.

By providing the sixth flexible circuit board, the sixth flexible circuit board can play a role in conducting electrical signals between the first main board and the second main board.

In a possible implementation, it further includes: a fourth connector and a fifth connector; the fourth connector is provided on the first motherboard, and the fifth connection is provided on the second motherboard. device; one end of the sixth flexible circuit board is electrically connected to the first motherboard through the fourth connector, and the other end of the sixth flexible circuit board is electrically connected to the second motherboard through the fifth connector. Electrical connection.

By disposing the fourth connector on the first main board, the fourth connector can play a role in conducting electrical signals between the first main board and the sixth flexible circuit board. By disposing the fifth connector on the second main board, the fifth connector can play a role in conducting electrical signals between the second main board and the sixth flexible circuit board.

In a possible implementation, one end of the sixth flexible circuit board and the first mainboard are electrically connected through welding, snapping or springing; the other end of the sixth flexible circuit board is electrically connected to the first mainboard. The second motherboards are electrically connected through welding, buckling or popping.

In a possible implementation, the first flexible circuit board is formed using metal wires, flexible circuit boards, printed metal, metal wires or screen back plate metal.

Description of drawings

Figure 1 is a schematic three-dimensional structural diagram of a foldable screen mobile phone in a folded state according to an embodiment of the present application;

Figure 2 is a schematic three-dimensional structural diagram of a foldable screen mobile phone in a half-folded state according to an embodiment of the present application;

Figure 3 is a schematic three-dimensional structural diagram of a foldable screen mobile phone in an unfolded state according to an embodiment of the present application;

Figure 4 is a schematic cross-sectional structural diagram of a folding screen mobile phone in the prior art;

Figure 5 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 6 is a schematic diagram of the split structure of the folding screen mobile phone in the unfolded state according to an embodiment of the present application;

Figure 7 is a schematic diagram of the split structure of the folding screen mobile phone in the unfolded state according to an embodiment of the present application;

Figure 8 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 9 is a partially enlarged schematic diagram of Figure 8;

Figure 10 is a plan top view of a folding screen mobile phone provided by an embodiment of the present application;

Figure 11 is a plan top view of the back panel of a folding screen mobile phone provided by an embodiment of the present application;

Figure 12 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 13 is a plan top view of a folding screen mobile phone provided by an embodiment of the present application;

Figure 14 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 15 is a schematic diagram of the split structure of the folding screen mobile phone in the unfolded state according to an embodiment of the present application;

Figure 16 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 17 is a partially enlarged schematic diagram of Figure 16;

Figure 18 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 19 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 20 is a partially enlarged schematic diagram of Figure 19;

Figure 21 is a schematic cross-sectional structural diagram of a folding screen mobile phone provided by an embodiment of the present application;

Figure 22 is a partially enlarged schematic diagram of Figure 21;

Figure 23 is a schematic diagram of the disassembled structure of the folding screen mobile phone in the unfolded state according to an embodiment of the present application;

Figure 24 is a schematic diagram of the disassembled structure of the foldable screen mobile phone in the unfolded state according to an embodiment of the present application.

Explanation of reference symbols:
100-Folding screen mobile phone; 110-First middle frame part; 120-Second middle frame part;
130-shaft assembly; 140-display body; 141-display panel;
142-Screen reinforcement board; 1421-First screen reinforcement board; 1422-Second screen reinforcement board;
1421a-the first groove; 1424-the first conductive member; 1422a-the second groove;
1426-the second conductive member; 150-the back cover; 151-the first back cover;
152-second back cover; 160-main board; 161-first main board;
162-The second main board; 171-The first flexible circuit board; 172-The second flexible circuit board;
173-The third flexible circuit board; 174-The fourth flexible circuit board; 175-The fifth flexible circuit board;
176-Sixth flexible circuit board; 180-back plate; 181-folding area;
182-reinforcement area; 191-first connector; 192-second connector;
193-The third connector; 194-The fourth connector; 195-The fifth connector;
200-Screen flexible circuit board; 300-Flexible circuit board.

Detailed ways

The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application and are not intended to limit the present application. The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The emergence of flexible screens has broken the display method of original display devices. Foldable electronic devices can exponentially improve the efficiency of information interaction through one or more simple folds. In the future, multiple folding and scroll-type designs can completely subvert information In an interactive way, foldable electronic displays can not only flexibly switch modes according to different usage scenarios, but also provide high screen-to-body ratio and clarity, which has gradually become a hot topic of research.

Embodiments of the present application provide a foldable electronic device, which may include but is not limited to a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a handheld computer, a touch TV, a walkie-talkie, and a netbook. , Point of sales (POS) machines, personal digital assistant (PDA), wearable devices, virtual reality devices, wireless USB flash drives, Bluetooth speakers/headphones/glasses, car front-mounted equipment, driving recorders, Mobile or fixed terminals with foldable functions such as security equipment.

Among them, in the embodiment of the present application, the folding screen mobile phone is the above-mentioned foldable electronic device as an example for explanation. The folding screen mobile phone provided by the embodiment of the present application can be a curved screen mobile phone or a flat screen mobile phone. In the embodiment of the present application, the folding screen mobile phone can be a curved screen mobile phone or a flat screen mobile phone. A flat-screen mobile phone is used as an example for illustration.

Referring to FIGS. 1 to 3 , taking the foldable electronic device as a foldable screen mobile phone 100 as an example, the foldable screen mobile phone 100 may include: a first middle frame part 110 and a second middle frame part 120 . The first middle frame part There is a bending area between 110 and the second middle frame part 120 . Wherein, for example, a rotating shaft assembly 130 may be provided in the bending area, and the rotating shaft assembly 130 is located between the first middle frame part 110 and the second middle frame part 120, and the first middle frame part 110 and the second middle frame part 120. The parts 120 can be rotationally connected through the rotating shaft assembly 130 to achieve relative folding and relative expansion of the first middle frame part 110 and the second middle frame part 120 .

In the embodiment of the present application, as shown in Figure 2 or Figure 3, the folding screen mobile phone 100 may also include: a display screen body 140, wherein the display screen body 140 may be a flexible display screen body 140. The flexible display screen body 140 It can cover one side of the first middle frame part 110, the rotating shaft assembly 130 and the second middle frame part 120, so that the flexible display body 140 can appear correspondingly as the first middle frame part 110 and the second middle frame part 120 rotate. Folded or expanded state.

Illustratively, when the first middle frame part 110 and the second middle frame part 120 rotate toward each other to a folded state (see FIG. 1 ), the flexible display body 140 of the folding screen mobile phone 100 is also in a folded state. Located between the first middle frame part 110 and the second middle frame part 120 . When the first middle frame part 110 and the second middle frame part 120 rotate away from each other to the unfolded state (see FIG. 3 ), until the first middle frame part 110 and the second middle frame part 120 The frame part 110 and the second middle frame part 120 are located on the same horizontal plane, and the flexible display body 140 of the folding screen mobile phone 100 is also in an unfolded state.

It should be noted that the number of middle frame parts in the folding screen mobile phone 100 may be two (see Figures 1 to 3) or more than two, and when the number of middle frame parts is more than two, each adjacent The middle frame portion can rotate around the mutually parallel rotating shaft assemblies 130 to form a multi-layered middle frame portion, or can be expanded to obtain a larger display area. In the embodiment of the present application, the folding screen mobile phone 100 having two middle frame parts (ie, the first middle frame part 110 and the second middle frame part 120) is mainly used as an example for explanation.

Further, the folding screen mobile phone 100 may also include: a back cover 150, as shown in FIG. 1 or FIG. 2, the back cover 150 is located on the first middle frame part 110, the rotating shaft assembly 130 and the second middle frame part 120 away from the display screen body. On one side of 140 , for example, the first middle frame part 110 , the rotating shaft assembly 130 and the second middle frame part 120 are all located between the display body 140 and the back cover 150 .

Specifically, as shown in FIG. 3 , the back cover 150 may include a first back cover 151 and a second back cover 152 , wherein the first back cover 151 may be located on a surface of the first middle frame part 110 away from the display body 140 , that is, the first middle frame part 110 may be located between the display screen body 140 and the first back cover 151 . The second back cover 152 may be located on a side of the first middle frame part 110 facing away from the display screen body 140 , that is, the first middle frame part 110 may be located between the display screen body 140 and the second back cover 152 .

It can be understood that the structures illustrated in the embodiments of the present application do not constitute specific limitations on the electronic equipment. In other embodiments of the present application, the folding screen mobile phone 100 may include more or fewer components than shown in the figures, or combine some components, or split some components, or arrange different components. For example, the foldable screen mobile phone 100 may also include a camera module, a flash, and other devices. The components illustrated may be implemented in hardware, software, or a combination of software and hardware.

In the related art, as shown in FIG. 4 , a foldable electronic device generally includes a first middle frame part 110 , a second middle frame part 120 and a display body 140 , where the first middle frame part 110 and the second middle frame part 120 They are rotationally connected through the rotating shaft assembly 130, and the display screen 140 covers the first middle frame part 110, the rotating shaft assembly 130 and the second middle frame part 120. When electrical signals need to be transmitted between the display screen 140 covering the first middle frame part 110 and the display screen 140 covering the second middle frame part 120 , a flexible circuit board is generally provided between the two. 300. Specifically, one end of the flexible circuit board 300 is electrically connected to the display screen 140 on the first middle frame part 110, and the other end of the flexible circuit board 300 passes through the rotating shaft assembly 130 and the display screen on the second middle frame part 120. Body 140 is electrically connected.

However, in the above solution, when the flexible circuit board 300 passes through the rotating shaft assembly 130, the space on the rotating shaft assembly 130 is limited, which easily affects the electrical performance signal integrity of the flexible circuit board 300, causing the electrical performance signal of the rotating shaft assembly 130 to be due to The tight wiring resources lead to signal quality problems, such as electromagnetic interference (EMI), electromagnetic compatibility (EMC), radiated emission (Radiated Emission, RE) and other problems, which will affect the display body 140 usage experience.

In addition, when the flexible circuit board 300 is passed through the rotating shaft assembly 130, if the size of the flexible circuit board 300 is too large, the structure of the rotating shaft assembly 130 itself will be damaged, affecting the structural reliability of the rotating shaft assembly 130, thus affecting the foldability. The overall reliability of electronic devices will in turn sacrifice the product competitiveness of foldable electronic devices.

Based on this, embodiments of the present application provide a new foldable electronic device. The foldable electronic device can be, for example, a folding screen mobile phone 100 or a folding screen computer (hereinafter, the foldable electronic device is a folding screen mobile phone 100 as an example). , used to solve the above technical problems.

The specific structure of the folding screen mobile phone 100 will be introduced in detail below with reference to the specific drawings and taking different embodiments as examples.

Referring to FIGS. 5 to 7 , an embodiment of the present application provides a folding screen mobile phone 100 . Specifically, the folding screen mobile phone 100 may at least include: a first middle frame part 110 , a second middle frame part 120 and a rotating shaft assembly 130 , wherein the first middle frame part 110 and the second middle frame part 120 are rotationally connected through the rotating shaft assembly 130.

In the embodiment of the present application, as shown in Figures 6 and 7, the folding screen mobile phone 100 may also include: a display screen 140, a main board 160, a first flexible circuit board 171 and a second flexible circuit board 172, wherein the display The screen body 140 and the main board 160 may be located on both sides of the first middle frame part 110 and the second middle frame part 120 .

In the embodiment of the present application, since the display screen body 140 needs to be folded, the display screen body 140 can be a flexible display screen body. For example, the flexible display screen body can be an organic light-emitting diode (OLED) display screen.

Specifically, as shown in FIGS. 8 and 9 , the mainboard 160 may include: a first mainboard 161 and a second mainboard 162 , wherein one end of the first flexible circuit board 171 is electrically connected to the first mainboard 161 , and the first flexible circuit board The other end of the second flexible circuit board 171 passes through the first middle frame part 110 and is electrically connected to the display screen body 140. One end of the second flexible circuit board 172 is electrically connected to the display screen body 140. The other end of the second flexible circuit board 172 passes through the second middle frame part 110. The frame part 120 is electrically connected to the second motherboard 162 .

In the folding screen mobile phone 100, the first main board 161 and the display screen body 140 are electrically connected through the first flexible circuit board 171 through the first middle frame part 110, and the display screen body 140 and the second main board 162 are electrically connected through the first flexible circuit board 171. The two flexible circuit boards 172 pass through the second middle frame part 120 to realize In this way, compared with the prior art in which the flexible circuit board passes through the rotating shaft assembly 130 to realize the electrical connection between the first main board 161 and the second main board 162 and between the first main board 161 and the display body 140, this application Embodiments can prevent the flexible circuit board from affecting the electrical performance and signal integrity of the flexible circuit board when passing through the rotating shaft assembly 130, avoid or reduce the transmission load of the rotating shaft assembly 130, and improve or solve the current transmission problem of the folding screen mobile phone 100 through the shaft. , thereby avoiding affecting the use experience of the flexible display body 140 .

Moreover, the embodiment of the present application does not require a flexible circuit board to pass through the rotating shaft assembly 130 and will not damage the structure of the rotating shaft assembly 130 itself. Therefore, it can avoid affecting the structural reliability of the rotating shaft assembly 130 and thus avoid affecting the foldable electronic device. The reliability of the whole machine can avoid sacrificing the product competitiveness of foldable electronic devices.

In addition, it should be noted that in the embodiment of the present application, the first main board 161 and the display body 140 are electrically connected through the first flexible circuit board 171 passing through the first middle frame part 110. That is to say, the first main board The electrical connection between 161 and the display body 140 only needs one connection. In the prior art, the first mainboard 161 needs to be connected twice to be connected to the display body 140. Therefore, compared with the prior art, the embodiment of the present application can shorten the wiring path of the electrical signal, thereby avoiding The integrity of high-speed signals is affected or interfered with.

In this embodiment of the present application, the display screen 140 may include: a display panel 141 and a screen reinforcement plate 142, wherein the screen reinforcement plate 142 may be located between the display screen 140, the first middle frame part 110 and the second middle frame part 110. between the frames 120 . By disposing the screen reinforcement plate 142 on the side of the display panel 141 facing the first middle frame part 110 and the second middle frame part 120 , the screen reinforcement plate 142 can increase the structural strength of the display panel 141 .

In the embodiment of the present application, continuing to refer to FIG. 5 and FIG. 10 , the screen reinforcement panel 142 may include: a first screen reinforcement panel 1421 and a second screen reinforcement panel 1422 , and the first screen reinforcement panel 1421 and the second screen reinforcement panel 1422 . A back plate 180 may be provided between the reinforcing plate 1421 and the second screen reinforcing plate 1422. Specifically, the first screen reinforcing plate 1421 is disposed opposite to the first middle frame part 110, and the back plate 180 and the rotating shaft assembly 130 The second screen reinforcement plate 1422 is arranged opposite to the second middle frame part 120 .

In this way, when the first middle frame part 110 and the second middle frame part 120 realize relative rotation through the rotating shaft assembly 130, the back plate 180 and the rotating shaft assembly 130 are arranged oppositely, which can prevent the end of the rotating shaft assembly 130 close to the display screen 140 from intersecting with each other. The display panel 141 is in direct contact, thereby preventing the rotating shaft assembly 130 from causing wear on the display panel 141 during rotation. Therefore, by providing the back plate 180, the display panel 141 can be protected to a certain extent.

Referring to FIG. 11 , the back panel 180 may include: at least two folding areas 181 and at least one reinforcing area 182 , wherein each reinforcing area 182 is located between two adjacent folding areas 181 , and the reinforcing area 182 can It serves to increase the structural strength of the back plate 180, and the folding area 181 can play a role in matching the rotating shaft and avoiding or reducing wear of the rotating shaft.

Among them, in a possible implementation manner, the back plate 180 can be a bamboo book. For example, the bamboo book may include: at least two folding areas 181 and at least one reinforcing area 182, where each reinforcing area 182 is located between two adjacent folding areas 181. The reinforcing area 182 of the bamboo book can play a role. It increases the structural strength of the bamboo book, and the folding area 181 of the bamboo book can play a role in matching the rotating shaft and avoiding or reducing wear of the rotating shaft.

In addition, the embodiment of the present application does not limit the specific transmission path of the first flexible circuit board 171. For example, the first flexible circuit board 171 can be implemented along the reinforcing area 182 of the bamboo book to improve the performance of the first flexible circuit board. The bending resistance and fatigue resistance of the first flexible circuit board 171 can improve the service life of the first flexible circuit board 171 to a certain extent.

As shown in Figures 6 and 7, in the embodiment of the present application, the folding screen mobile phone 100 may also include: a first connector 191 and a second connector 192, wherein the first connector is provided on the first motherboard 161 191. The display screen body 140 is provided with a second connector 192 . One end of the first flexible circuit board 171 is electrically connected to the first mainboard 161 through the first connector 191 , and the other end of the first flexible circuit board 171 is electrically connected to the display screen 140 through the second connector 192 .

In this way, the first connector 191 can conduct electrical signals between the first main board 161 and the first flexible circuit board 171 , and the second connector 192 can conduct the display body 140 and the first flexible circuit. The role of electrical signals between boards 171.

In addition, in the embodiment of the present application, the folding screen mobile phone 100 may also include: a screen flexible circuit board 200 (see Figure 5), wherein the screen flexible circuit board 200 may be located on the display screen 140, and, One end of the screen flexible circuit board 200 may be electrically connected to the second connector 192 , and the other end of the screen flexible circuit board 200 may be electrically connected to the second flexible circuit board 172 .

By disposing the screen flexible circuit board 200 on the display screen 140, the screen flexible circuit board 200 can conduct electrical signals between the display screen 140 and the first main board 161 and between the display screen 140 and the second main board 162. role.

It should be noted that in the embodiment of the present application, the electrical signal wiring between the first main board 161 and the second main board 162 that is not related to the screen signal may pass through the screen flexible circuit board 200 or may not pass through the screen body. Flexible circuit board 200, the embodiment of this application does not add limited.

The signal wiring between the first main board 161 and the second main board 162 may pass through the first flexible circuit board 171 and the second flexible circuit board 172, or may be directly etched on the first screen reinforcement board 1421 or the third The signal lines on the second screen reinforcement board 1422.

In addition, it can be understood that in some embodiments, the first connector 191 and the second connector 192 may not be provided in the folding screen mobile phone 100, that is, there is no need to provide the first connector 191 on the first motherboard 161. There is no need to provide the second connector 192 on the display screen 140. At this time, one end of the first flexible circuit board 171 and the first main board 161 are directly connected through welding, buckling or elastic connection to achieve electrical connection. The first flexible circuit The other end of the board 171 and the display screen body 140 are directly electrically connected through welding, buckling or popping.

It should be noted that in the embodiment of the present application, the first flexible circuit board 171 and the second flexible circuit board 172 may be an integral piece. That is to say, the first flexible circuit board 171 and the second flexible circuit board 172 are processed during the manufacturing process. It can be formed by one-piece casting during the process. By designing the first flexible circuit board 171 and the second flexible circuit board 172 as one piece, poor electrical connection between the first flexible circuit board 171 and the second flexible circuit board 172 can be avoided, thereby improving the efficiency of the first flexible circuit board. The electrical connection reliability between the board 171 and the second flexible circuit board 172.

It can be understood that when one end of the first flexible circuit board 171 and the first main board 161 are directly electrically connected through welding, buckling or elastic connection, the other end of the first flexible circuit board 171 and the display body 140 are electrically connected. When the electrical connection is realized directly through welding, buckling or spring connection, the folding screen mobile phone 100 can also include: a screen flexible circuit board 200. At this time, the screen flexible circuit board 200 can be located on the display body 140. Furthermore, one end of the screen flexible circuit board 200 is electrically connected to the first flexible circuit board 171 , and the other end of the screen flexible circuit board 200 is electrically connected to the second flexible circuit board 172 .

By disposing the screen flexible circuit board 200 on the display screen 140 , the screen flexible circuit board 200 can conduct electrical signals between the first flexible circuit board 171 and the second flexible circuit board 172 .

It should be noted that, in this embodiment of the present application, the first flexible circuit board 171 and the screen flexible circuit board 200 may be an integral piece. By designing the first flexible circuit board 171 and the screen flexible circuit board 200 as one piece, poor electrical connection between the first flexible circuit board 171 and the screen flexible circuit board 200 can be avoided, thereby improving the efficiency of the first flexible circuit. The electrical connection reliability between the board 171 and the screen flexible circuit board 200.

Alternatively, the second flexible circuit board 172 and the screen flexible circuit board 200 may be integrated. By designing the second flexible circuit board 172 and the screen flexible circuit board 200 as one piece, poor electrical connection between the second flexible circuit board 172 and the screen flexible circuit board 200 can be avoided, thereby improving the efficiency of the second flexible circuit. The reliability of the electrical connection between the board 172 and the screen flexible circuit board 200.

Alternatively, the first flexible circuit board 171 , the screen flexible circuit board 200 and the second flexible circuit board 172 can all be integrated. By designing the first flexible circuit board 171 and the screen flexible circuit board 200 and the second flexible circuit board 172 as one piece, it is possible to avoid the interference between the first flexible circuit board 171 and the screen flexible circuit board 200 and the screen flexible circuit. If the electrical connection between the board 200 and the second flexible circuit board 172 is poor, the connection between the first flexible circuit board 171 and the screen flexible circuit board 200 and the second flexible circuit board 172 and the screen flexible circuit board 200 can be improved. electrical connection reliability.

Referring to FIG. 9 , in the embodiment of the present application, the folding screen mobile phone 100 may also include: a third connector 193 , wherein the third connector 193 may be provided on the second mainboard 162 , and the second flexible circuit board 172 One end of the second flexible circuit board 172 is electrically connected to the display screen 140 through the second connector 192 , and the other end of the second flexible circuit board 172 is electrically connected to the second main board 162 through the third connector 193 .

By disposing the third connector 193 on the second main board 162 , the third connector 193 can play a role in conducting electrical signals between the second flexible circuit board 172 and the second main board 162 . In addition, the second connector 192 can also serve to conduct electrical signals between the second flexible circuit board 172 and the display screen 140 .

In addition, it can be understood that in some embodiments, the third connector 193 may not be provided in the folding screen mobile phone 100, that is, there is no need to provide the third connector 193 on the second mainboard 162. In this case, in this application In the embodiment, one end of the second flexible circuit board 172 and the display body 140 are directly electrically connected through welding, buckling or spring connection, and the other end of the second flexible circuit board 172 is directly connected to the second main board 162 . Electrical connection is achieved by soldering, snapping or snapping.

In addition, it can be understood that in the embodiment of the present application, the first flexible circuit board 171 can be formed by metal wire, flexible printed circuit board (FPC), printed metal, metal wire or the metal processing of the screen back panel 180 .

Similarly, the second flexible circuit board 172 can also be formed using metal wires, flexible circuit boards, printed metal, metal wires or the metal of the screen back panel 180 .

It should be noted that the embodiment of the present application does not limit the materials and specific processes used by the first flexible circuit board 171 and the second flexible circuit board 172, nor is it limited to the above examples.

In some embodiments, the first mainboard 161 and the second mainboard 162 can also be electrically connected through the first conductive member 1424 and the second conductive member 1426.

Specifically, in the embodiment of the present application, as shown in FIGS. 12 and 13 , a first groove 1421a may be opened on the side of the first screen reinforcement plate 1421 facing the first middle frame part 110 . A first conductive member 1424 may be provided within 1421a. A second groove 1422a may be formed on a side of the second screen reinforcing plate 1422 facing the second middle frame part 120, and a second conductive member 1426 may be disposed in the second groove 1422a. Furthermore, the first conductive member 1424 may be electrically connected to the first main board 161, the second conductive member 1426 may be electrically connected to the second main board 162, and the first conductive member 1424 may be electrically connected to the second conductive member 1426.

By disposing the first conductive member 1424 in the first groove 1421a on the first screen reinforcement plate 1421, the first conductive member 1424 is electrically connected to the first main board 161, and the first conductive member 1424 on the second screen reinforcement plate 1422 is electrically connected to the first main board 161. A second conductive member 1426 is disposed in the two grooves 1422a. The second conductive member 1426 is electrically connected to the second main board 162. Moreover, the first conductive member 1424 is electrically connected to the second conductive member 1426, so that the first conductive member 1424 can be The second conductive member 1426 realizes the electrical connection between the first main board 161 and the second main board 162 .

It can be understood that, as shown in Figure 12, the folding screen mobile phone 100 may also include: a third flexible circuit board 173, a fourth flexible circuit board 174 and a fifth flexible circuit board 175, wherein the first conductive member 1424 and the A main board 161 can be electrically connected to each other through a third flexible circuit board 173, and a second conductive member 1426 and the second main board 162 can be electrically connected to each other through a fourth flexible circuit board 174. Moreover, the first conductive member 1424 and the second conductive member 1424 can be electrically connected to each other through a fourth flexible circuit board 174. The components 1426 may be electrically connected through the fifth flexible circuit board 175 .

The electrical connection between the first conductive member 1424 and the first main board 161 can be realized through the third flexible circuit board 173 , and the electrical connection between the second conductive member 1426 and the second main board 162 can be realized through the fourth flexible circuit board 174 . The electrical connection between the first conductive component 1424 and the second conductive component 1426 can be achieved through the fifth flexible circuit board 175 .

It can be understood that in the embodiment of the present application, the third flexible circuit board 173, the fourth flexible circuit board 174 and the fifth flexible circuit board 175 can use metal wires, flexible circuit boards, printed metal, metal wires or screen back panels. 180 metal processing and forming.

It should be noted that the embodiment of the present application does not limit the materials and specific processes used by the third flexible circuit board 173, the fourth flexible circuit board 174, and the fifth flexible circuit board 175, nor is it limited to the above examples.

Other technical features are the same as or similar to Embodiment 1 and can achieve the same technical effects, so they will not be described again here.

In some embodiments, the first main board 161 and the second main board 162 can also be electrically connected through a sixth flexible circuit board 176 .

Specifically, in the embodiment of the present application, as shown in FIGS. 14 and 15 , the folding screen mobile phone 100 may further include: a sixth flexible circuit board 176 , wherein, as shown in FIGS. 16 and 17 , the sixth flexible circuit One end of the board 176 is electrically connected to the first main board 161 , and the other end of the sixth flexible circuit board 176 passes through the rotating shaft assembly 130 and is electrically connected to the second main board 162 .

By providing the sixth flexible circuit board 176 , the sixth flexible circuit board 176 can assist or supplement the conduction of electrical signals between the first main board 161 and the second main board 162 . In this way, when electrical signals need to be transmitted between the first main board 161 and the second main board 162, part of the electrical signals can be passed through the first flexible circuit board 171 and the second flexible circuit board 172, and the other part of the electrical signals can be passed through The sixth flexible circuit board 176 of the rotating shaft assembly 130 realizes the communication. Therefore, compared with the prior art, the communication between the first main board 161 and the second main board 162 is completely achieved through the flexible circuit board 300 passing through the rotating shaft assembly 130. The embodiments of the present application can avoid or reduce the transmission load of the rotating shaft assembly 130, and improve or solve the problem of through-axis transmission of the current folding screen mobile phone 100.

It should be noted that in some embodiments, as shown in FIG. 18 , the sixth flexible circuit board 176 may not pass through the rotating shaft assembly 130 . Specifically, as shown in FIGS. 19 and 20 , one end of the sixth flexible circuit board 176 is electrically connected to the first mainboard 161 , and the other end of the sixth flexible circuit board 176 passes through the first middle frame 110 and the second mainboard 162 Electrical connection.

In addition, it can be understood that the sixth flexible circuit board 176 may share the first connector 191 with the first flexible circuit board 171 (see FIG. 20 ), that is, the sixth flexible circuit board 176 and the first flexible circuit board 171 They are all electrically connected to the first motherboard 161 through the first connector 191 .

Alternatively, as shown in FIGS. 21 and 22 , in some embodiments, the folding screen mobile phone 100 may further include: a fourth connector 194 and a fifth connector 195 , wherein a fourth connector 194 may be provided on the first mainboard 161 . Connector 194, a fifth connector 195 can be provided on the second mainboard 162, one end of the sixth flexible circuit board 176 can be electrically connected to the first mainboard 161 through the fourth connector 194, and the other end of the sixth flexible circuit board 176 It may be electrically connected to the second motherboard 162 through the fifth connector 195 .

By disposing the fourth connector 194 on the first main board 161 , the fourth connector 194 can play a role in conducting electrical signals between the first main board 161 and the sixth flexible circuit board 176 . By disposing the fifth connector 195 on the second main board 162 , the fifth connector 195 can play a role in conducting electrical signals between the second main board 162 and the sixth flexible circuit board 176 .

Or, in some embodiments, when the sixth flexible circuit board 176 and the first flexible circuit board 171 pass through the first middle frame part 110, they may So it passes through the first middle frame part 110 at different positions. Specifically, as shown in FIGS. 23 and 24 , one end of the first flexible circuit board 171 is electrically connected to the first mainboard 161 , and the other end of the first flexible circuit board 171 passes through the first middle frame 110 and the display body 140 Electrically connected, one end of the sixth flexible circuit board 176 is electrically connected to the first mainboard 161, and the other end of the sixth flexible circuit board 176 passes through the first middle frame 110 and is electrically connected to the display screen body 140. However, the sixth flexible circuit The board 176 and the first flexible circuit board 171 are respectively penetrated at different positions on the first middle frame part 110 .

In addition, it can be understood that in some embodiments, the fourth connector 194 and the fifth connector 195 may not be provided in the folding screen mobile phone 100, that is, there is no need to provide the fourth connector 194 on the first motherboard 161. There is no need to provide the fifth connector 195 on the second main board 162. At this time, in the embodiment of the present application, one end of the sixth flexible circuit board 176 and the first main board 161 can be directly welded, buckled or elastically connected. To achieve electrical connection, the other end of the sixth flexible circuit board 176 and the second main board 162 can be directly connected through welding, buckling or spring connection to achieve electrical connection.

In addition, it can be understood that in the embodiment of the present application, the sixth flexible circuit board 176 can be formed using metal wires, flexible circuit boards, printed metal, metal wires, or metal processing of the screen back plate 180 .

It should be noted that the embodiment of the present application does not limit the material and specific process used for the sixth flexible circuit board 176, nor is it limited to the above examples.

In the description of the embodiments of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a fixed connection. Indirect connection through an intermediary can be the internal connection between two elements or the interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

The devices or elements mentioned in the embodiments of this application or by implication must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of this application. In the description of the embodiments of this application, "plurality" means two or more, unless otherwise precisely and specifically specified.

The terms "first", "second", "third", "fourth", etc. (if present) in the description and claims of the embodiments of this application and the above-mentioned drawings are used to distinguish similar objects, and It is not necessary to describe a specific order or sequence. It is to be understood that data so used are interchangeable under appropriate circumstances such that embodiments of the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, processes, methods, systems, products or devices that include a series of steps or units and need not be limited to those explicitly listed may include other steps or elements not expressly listed or inherent to the process, method, product or apparatus.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, but are not intended to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or modify some or all of the technical features. Equivalent replacement. However, these modifications or substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of each embodiment of the present application.

Claims (18)

1. A foldable electronic device, characterized by at least including:

   The first middle frame part, the second middle frame part and the rotating shaft assembly;

   The first middle frame part and the second middle frame part are rotationally connected through the rotating shaft assembly;

   Also includes: a display body, a main board, a first flexible circuit board and a second flexible circuit board;

   The display screen body and the main panel are located on both sides of the first middle frame part and the second middle frame part;

   The mainboard includes: a first mainboard and a second mainboard; one end of the first flexible circuit board is electrically connected to the first mainboard, and the other end of the first flexible circuit board passes through the first middle frame part It is electrically connected to the display screen body; one end of the second flexible circuit board is electrically connected to the display screen body, and the other end of the second flexible circuit board passes through the second middle frame part and the third The two motherboards are electrically connected.
2. The foldable electronic device according to claim 1, wherein the display screen body includes: a display panel and a screen body reinforcing plate;

   The screen reinforcing plate is located between the display screen, the first middle frame part and the second middle frame part.
3. The foldable electronic device according to claim 2, wherein the screen reinforcement panel includes: a first screen reinforcement panel and a second screen reinforcement panel;

   And a back plate is provided between the first screen reinforcement plate and the second screen reinforcement plate;

   The first screen reinforcing plate is arranged opposite to the first middle frame part, the back plate is arranged opposite to the rotating shaft assembly, and the second screen reinforcing plate is opposite to the second middle frame part. set up.
4. The foldable electronic device according to claim 3, wherein the back panel is a bamboo book.
5. The foldable electronic device according to claim 3 or 4, characterized in that a first groove is opened on a side of the first screen reinforcement plate facing the first middle frame portion, and the first groove is A first conductive member is provided in the groove;

   A second groove is formed on a side of the second screen reinforcement plate facing the second middle frame portion, and a second conductive member is disposed in the second groove;

   The first conductive member is electrically connected to the first mainboard, the second conductive member is electrically connected to the second mainboard, and the first conductive member is electrically connected to the second conductive member.
6. The foldable electronic device according to claim 5, further comprising: a third flexible circuit board, a fourth flexible circuit board and a fifth flexible circuit board;

   The first conductive member and the first main board are electrically connected through the third flexible circuit board, and the second conductive member and the second main board are electrically connected through the fourth flexible circuit board, And the first conductive member and the second conductive member are electrically connected through the fifth flexible circuit board.
7. The foldable electronic device according to any one of claims 1 to 6, further comprising: a first connector and a second connector;

   The first connector is provided on the first motherboard, and the second connector is provided on the display screen body;

   One end of the first flexible circuit board is electrically connected to the first mainboard through the first connector, and the other end of the first flexible circuit board is electrically connected to the display screen body through a second connector.
8. The foldable electronic device according to claim 7, further comprising: a screen flexible circuit board; the screen flexible circuit board is located on the display screen body;

   And one end of the screen flexible circuit board is electrically connected to the second connector, and the other end of the screen flexible circuit board is electrically connected to the second flexible circuit board.
9. The foldable electronic device according to any one of claims 1 to 8, wherein one end of the first flexible circuit board and the first mainboard are electrically connected by welding, snapping or springing;

   The other end of the first flexible circuit board and the display screen body are electrically connected through welding, snapping or springing.
10. The foldable electronic device according to claim 9, wherein the first flexible circuit board and the second flexible circuit board are one piece.
11. The foldable electronic device according to claim 9 or 10, further comprising: a screen flexible circuit board; the screen flexible circuit board is located on the display screen body;

    And one end of the screen flexible circuit board is electrically connected to the first flexible circuit board, and the other end of the screen flexible circuit board is electrically connected to the second flexible circuit board.
12. The foldable electronic device according to claim 11, wherein the first flexible circuit board and the screen flexible circuit board are one piece;

    Alternatively, the second flexible circuit board and the screen flexible circuit board are one piece;

    Alternatively, the first flexible circuit board, the screen flexible circuit board and the second flexible circuit board are all one piece.
13. The foldable electronic device according to claim 7 or 8, further comprising: a third connector; the third connector is provided on the second motherboard;

    One end of the second flexible circuit board is electrically connected to the display screen body through the second connector, and the other end of the second flexible circuit board is electrically connected to the second mainboard through the third connector. .
14. The foldable electronic device according to any one of claims 9 to 13, wherein one end of the second flexible circuit board and the display screen body are electrically connected by welding, buckling or springing;

    The other end of the second flexible circuit board and the second main board are electrically connected by welding, buckling or springing.
15. The foldable electronic device according to any one of claims 1 to 14, further comprising: a sixth flexible circuit board;

    One end of the sixth flexible circuit board is electrically connected to the first main board, and the other end of the sixth flexible circuit board passes through the rotating shaft assembly and is electrically connected to the second main board.
16. The foldable electronic device according to claim 15, further comprising: a fourth connector and a fifth connector;

    The fourth connector is provided on the first motherboard, and the fifth connector is provided on the second motherboard;

    One end of the sixth flexible circuit board is electrically connected to the first mainboard through the fourth connector, and the other end of the sixth flexible circuit board is electrically connected to the second mainboard through the fifth connector. .
17. The foldable electronic device according to claim 15, wherein one end of the sixth flexible circuit board and the first main board are electrically connected by welding, buckling or springing;

    The other end of the sixth flexible circuit board and the second main board are electrically connected by welding, buckling or springing.
18. The foldable electronic device according to any one of claims 1 to 17, characterized in that the first flexible circuit board is processed and formed by metal wires, flexible circuit boards, printed metal, metal wires or screen back plate metal.