Transmission device and electronic apparatus

Abstract

The utility model discloses a transmission device and electronic equipment. The transmission device comprises a connector and a flexible circuit board. The flexible circuit board comprises a dielectric plate and multiple circuit layers, and the multiple circuit layers are sequentially arranged on the dielectric plate at intervals in the thickness direction of the dielectric plate. Wherein one circuit layer is a connecting layer and is electrically connected with the connector. At least one circuit layer is a signal layer, the signal layer comprises a signal line and a first metal layer, and the first metal layer is provided with a first avoiding groove for avoiding the signal line. And at least one circuit layer is a transmission layer and comprises a transmission line and a second metal layer insulated from the transmission line. Wherein the second metal layer is provided with a second avoiding groove, and the signal line is projected in the second avoiding groove on the orthographic projection plane in the thickness direction of the dielectric plate. The transmission device can integrate the signal line and the transmission line, has good loss control, can improve the structural compactness of the electronic equipment, and does not affect the communication quality of the electronic equipment.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to a transmission device and an electronic device. Background Art

[0002] Electronic devices such as mobile phones and tablets have become essential technology products for people's daily lives, learning, and entertainment. As electronic devices integrate more and more functions, the internal space of electronic devices is becoming increasingly valuable. The space occupied by each functional component is becoming smaller and smaller, so as to achieve lighter and thinner electronic devices.

[0003] In related technologies, signal and control lines are typically separated, which results in wasted internal space in electronic devices. Integrating signal and transmission lines together, however, can be affected by connectors, leading to poor impedance consistency and difficulty controlling antenna signal transmission losses. Utility Model Content

[0004] The present disclosure provides a transmission device and electronic device. The transmission device integrates signal lines and transmission lines through an optimized structure, while also achieving good loss control. Application of the transmission device in electronic devices can improve the structural compactness of the electronic devices without compromising their communication quality.

[0005] The technical solution is as follows:

[0006] According to a first aspect of an embodiment of the present disclosure, a transmission device is provided, comprising a connector and a flexible circuit board. The flexible circuit board comprises a dielectric board and multiple circuit layers, wherein the multiple circuit layers are sequentially spaced apart on the dielectric board along the thickness direction of the dielectric board.

[0007] One of the circuit layers is a connection layer. The connection layer is provided with a first electrical connection portion and a second electrical connection portion. The first electrical connection portion and the second electrical connection portion are insulated and electrically connected to the connector respectively.

[0008] At least one circuit layer is a signal layer, which includes a signal line and a first metal layer. The first metal layer is provided with a first avoidance groove for avoiding the signal line. The signal line is arranged in the first avoidance groove and is insulated from the first metal layer. The signal line is connected to the connector through a first electrical connection part.

[0009] At least one circuit layer is a transmission layer, including a transmission line and a second metal layer insulated from the transmission line. The transmission line is insulated from the signal line and connected to the connector through a second electrical connector.

[0010] Among them, along the thickness direction of the dielectric plate, at least one transmission layer is adjacent to the signal layer, the second metal layer is provided with a second avoidance groove, and on the orthographic projection surface in the thickness direction of the dielectric plate, the signal line is projected into the second avoidance groove.

[0011] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0012] When the transmission device is in use, the signal line is connected to the connector via the first electrical connection to transmit the antenna control signal, while the transmission line is connected to the connector via the second electrical connection to achieve other transmission functions. Thus, the transmission device can integrate signal lines and transmission lines. At the same time, along the thickness direction of the dielectric plate, at least one transmission layer is adjacent to the signal layer, and the second metal layer is provided with a second avoidance groove. On the orthographic projection plane in the thickness direction of the dielectric plate, the signal line is projected into the second avoidance groove, so that the signal line is not affected by the second metal layer, and the impedance of the signal line is well consistent with the impedance of the connector, so that the transmission device has good loss control. By combining an optimized structure, the transmission device can integrate signal lines and transmission lines and has good loss control.

[0013] The technical solution of the present disclosure is further described below:

[0014] In one embodiment, at least one transmission layer is sandwiched between the connection layer and the signal layer along the thickness direction of the dielectric plate.

[0015] In one embodiment, at least two transmission layers are sandwiched between the connection layer and the signal layer along the thickness direction of the dielectric plate, and the transmission layers adjacent to the signal layer are each provided with a second avoidance groove.

[0016] In one embodiment, the transmission layer includes at least two layers. Along the thickness direction of the dielectric plate, the signal layer is sandwiched between two adjacent transmission layers, and both transmission layers are provided with a second avoidance groove.

[0017] In one embodiment, the connection layer includes a third metal layer insulated from the first electrical connection portion and the second electrical connection portion.

[0018] And / or, compared with other circuit layers, the connection layer is arranged closer to the outer side of the dielectric plate or arranged on the surface of the dielectric plate.

[0019] In one embodiment, the connection layer is adjacent to the signal layer along the thickness direction of the dielectric plate, and the third metal layer is provided with a third avoidance groove. On the orthographic projection surface in the thickness direction of the dielectric plate, the signal line is projected into the second avoidance groove and the third avoidance groove.

[0020] In one embodiment, the connector includes at least two.

[0021] There are at least two first electrical connection parts, which correspond to the connectors one by one. At least two first electrical connection parts are spaced apart and arranged on both sides of the flexible circuit board, and are electrically connected to both ends of the signal line respectively.

[0022] And / or, there are at least two second electrical connection parts, which correspond to the connectors one by one. At least two second electrical connection parts are spaced apart on both sides of the flexible circuit board and are electrically connected to both ends of the transmission line respectively.

[0023] In one embodiment, the flexible circuit board includes an MPI circuit board.

[0024] And / or, on the signal layer, the width of the signal line is L1, the minimum distance between the signal line and the first metal layer is L2, and L2 ≥ L1 / 2.

[0025] And / or, the width of the signal line is L1, and the width in the second avoidance groove on the orthographic projection surface in the thickness direction of the dielectric plate is L3, where L3 ≥ 2L1.

[0026] In one embodiment, the impedance of the connector is 50Ω, L1 = 0.4 mm, L2 ≥ 0.2 mm, and L3 ≥ 0.8 mm.

[0027] According to a second aspect of the embodiments of the present disclosure, an electronic device is further provided, comprising a control mainboard and the transmission device according to any of the above embodiments, wherein the control mainboard is electrically connected to the flexible circuit board via a connector.

[0028] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0029] This electronic device utilizes the transmission device described in any of the aforementioned embodiments, enabling the control motherboard to transmit control signals via signal lines with excellent loss control, thus ensuring no degradation in the communication quality of the electronic device. Furthermore, the transmission device, through its optimized structure, integrates signal and transmission lines, saving space and enhancing the compactness of the electronic device.

[0030] The technical solution of the present disclosure is further described below:

[0031] In one embodiment, the electronic device further includes a shell assembly and a feed circuit board. The shell assembly is provided with an antenna. The feed circuit board and the control main board are spaced apart in the shell assembly along a first direction and are connected through a flexible circuit board. The feed circuit board cooperates with the antenna for power feeding, and the feed circuit board is connected to the control main board through a signal line.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which constitute a part of the present disclosure, are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure.

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 FIG. 1 is a schematic structural diagram of an electronic device shown in an embodiment.

[0036] Figure 2 for Figure 1 The shown figure is a schematic cross-sectional view of the transmission device in the thickness direction of the dielectric plate.

[0037] Figure 3 for Figure 2 Schematic diagram of the connection layers shown.

[0038] Figure 4 for Figure 2 Schematic diagram of the signal layer shown.

[0039] Figure 5 for Figure 2 Schematic diagram of the transport layer shown.

[0040] Figure 6 FIG1 is a schematic cross-sectional view of a flexible circuit board in the thickness direction of a dielectric board shown in one embodiment.

[0041] Figure 7 FIG1 is a schematic cross-sectional view of a flexible circuit board in the thickness direction of a dielectric board shown in one embodiment.

[0042] Figure 8 FIG1 is a schematic cross-sectional view of a flexible circuit board in the thickness direction of a dielectric board shown in one embodiment.

[0043] Figure 9 for Figure 8 Schematic diagram of the connection layers shown.

[0044] Figure 10 for Figures 2 to 5 Schematic diagram of impedance testing of the transmission device shown.

[0045] Figure 11 for Figure 1 Schematic diagram of the hardware structure of the electronic device shown.

[0046] Description of reference numerals:

[0047] 10. Electronic device; 11. Processing component; 12. Memory; 13. Power supply component; 14. Multimedia component; 15. Audio component; 16. Input / output interface; 17. Sensor component; 18. Communication component; 100. Transmission device; 100. Housing component; 110. Connector; 120. Flexible circuit board; 121. Dielectric board; 122. Connecting layer; 1221. First electrical connection portion; 1222. Second electrical connection portion; 1223, third metal layer; 103, third avoidance groove; 123, signal layer; 1231, signal line; 1232, first metal layer; 101, first avoidance groove; 124, transmission layer; 1241, transmission line; 1242, second metal layer; 102, second avoidance groove; 125, first metal via; 126, second metal via; 200, control main board; 300, housing assembly; 310, antenna; 400, feed circuit board. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and do not limit the scope of protection of the present disclosure.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0050] Mobile phones, tablets, communication watches, and other electronic devices have become essential technology products for people's daily lives, learning, and entertainment. With a wide variety of electronic devices and a wide range of brands, consumers have a wide range of electronic device choices. Winning consumer favor has become an increasingly important issue for electronic device manufacturers.

[0051] With the development of electronic devices, communication quality and the need for thinner and lighter devices have become increasingly important considerations for consumers. As electronic devices integrate more and more functions, internal space is becoming increasingly valuable, and the space occupied by various functional components is shrinking to achieve thinner and lighter devices. However, this also makes the layout of antenna components increasingly difficult. Improving the structural compactness of electronic devices while maintaining communication quality has become a growing concern for electronic device manufacturers.

[0052] In related technologies, signal and control lines are typically separated. Signal lines are transmitted using coaxial cables, but coaxial cables are thick and waste internal space in electronic devices. Integrating signal and transmission lines together, however, can be affected by connectors, resulting in poor impedance consistency and difficulty controlling antenna signal transmission losses.

[0053] Based on this, it is necessary to provide a transmission device that can integrate signal lines and transmission lines by combining an optimized structure and has good loss control. When used in electronic devices, the transmission device can improve the structural compactness of the electronic devices without affecting their communication quality.

[0054] In order to better understand the transmission device of the present disclosure, the following description will be made in conjunction with an electronic device to which the transmission device is applied.

[0055] like Figure 1 as well as Figure 2 As shown, in some embodiments, an electronic device 10 is provided, comprising a transmission device 100 and a control mainboard 200. The transmission device 100 includes a connector 110 and a flexible circuit board 120. The flexible circuit board 120 includes a dielectric board 121 and multiple circuit layers, which are sequentially spaced apart along the thickness of the dielectric board 121. This facilitates the implementation of multiple transmission paths.

[0056] like Figure 2 as well as Figure 3 As shown, one of the circuit layers is a connection layer 122. The connection layer 122 is provided with a first electrical connection portion 1221 and a second electrical connection portion 1222. The first electrical connection portion 1221 and the second electrical connection portion 1222 are insulated and electrically connected to the connector 110 respectively. This facilitates electrical connection to the connector 110 via the first electrical connection portion 1221 and the second electrical connection portion 1222.

[0057] like Figure 2 as well as Figure 4As shown, at least one circuit layer is a signal layer 123. Signal layer 123 includes a signal line 1231 and a first metal layer 1232. The first metal layer 1232 is provided with a first avoidance groove 101 for avoiding the signal line 1231. The signal line 1231 is arranged in the first avoidance groove 101 and is insulated from the first metal layer 1232. The signal line 1231 is connected to the connector 110 via a first electrical connection portion 1221. In this way, the flexible circuit board 120 can integrate the signal line 1231, also called a feeder line, to achieve signal transmission from the antenna 310. For example, the signal received by the antenna 310 can be transmitted to the electronic device 10, and / or the signal generated by the electronic device 10 can be transmitted to the antenna 310 for radiation. The provision of the first metal layer 1232 can at least protect the signal line 1231 from external electromagnetic interference, thereby improving the integrity of signal transmission.

[0058] like Figures 2 to 4 As shown, the flexible circuit board 120 further includes a first metal via 125 . The first metal via 125 is disposed on the dielectric board 121 and connects the signal line 1231 and the first electrical connection portion 1221 .

[0059] The connector 110 can achieve electrical connection with the first electrical connection portion 1221 through pins or other means.

[0060] like Figure 5 As shown, at least one circuit layer is a transmission layer 124, comprising a transmission line 1241 and a second metal layer 1242 insulated from the transmission line 1241. The transmission line 1241 is insulated from the signal line 1231 and connected to the connector 110 via the second electrical connector 110. Thus, the flexible circuit board 120 can integrate the transmission line 1241, which is connected to the connector 110 via the second electrical connection to perform other transmission functions. For example, the transmission line 1241 is used to transmit control signals or data signals to control the azimuth and elevation of the antenna 310, adjust the gain of the antenna 310, or monitor the operating status of the antenna 310. The provision of the second metal layer 1242 at least enables the transmission line 1241 to have good anti-interference capabilities, thereby ensuring the accuracy and stability of the control signal.

[0061] like Figure 5 As shown, the flexible circuit board 120 further includes a second metal via 126 . The second metal via 126 is disposed on the dielectric board 121 and connects the transmission line 1241 and the second electrical connection portion 1222 .

[0062] The connector 110 can achieve electrical connection with the second electrical connection portion 1222 through pins or other means.

[0063] Combine Figures 2 to 5As shown, along the thickness direction of the dielectric plate 121, at least one transmission layer 124 is adjacent to the signal layer 123. The second metal layer 1242 is provided with a second avoidance groove 102. In the orthographic projection plane of the dielectric plate 121 in the thickness direction, the signal line 1231 is projected within the second avoidance groove 102. This ensures that the signal line 1231 is not affected by the second metal layer 1242. Combined with an appropriate dielectric thickness, the desired characteristic impedance is achieved, thereby ensuring good consistency between the impedance of the signal line 1231 and the impedance of the connector 110, thus achieving excellent loss control for the transmission device 100.

[0064] See you later Figure 1 As shown, the control motherboard 200 is electrically connected to the flexible circuit board 120 via the connector 110. Thus, the electronic device 10 employs the transmission device 100 of any of the aforementioned embodiments, enabling the control motherboard 200 to transmit control signals via the signal line 1231 with good loss control, without affecting the communication quality of the electronic device 10. Furthermore, the transmission device 100, through its optimized structure, integrates the signal line 1231 and the transmission line 1241, saving space and improving the compactness of the electronic device 10.

[0065] It is understandable that integrating the signal line 1231 into the flexible circuit board 120 makes the structure more compact and, compared with the traditional coaxial cable solution, can reduce the thickness and space occupied by the electronic device 10, thereby making the electronic device 10 lighter and thinner.

[0066] like Figure 1 As shown, in some embodiments, the electronic device 10 further includes a housing assembly 300100 and a feed circuit board 400. The housing assembly 300100 is provided with an antenna 310. The feed circuit board 400 and the control mainboard 200 are spaced apart in the housing assembly 300100 along a first direction and connected via a flexible circuit board 120. The feed circuit board 400 cooperates with the antenna 310 in feeding, and the feed circuit board 400 is connected to the control mainboard 200 via a signal line 1231. In this way, the feed circuit board 400 is used as a small board for controlling the antenna 310 and is connected via the transmission device 100. This allows for flexible setting of the distance between the antenna 310 and the control mainboard 200, making the arrangement more flexible. Furthermore, since the transmission device 100 can integrate the signal line 1231 and the transmission line 1241 and has good loss control, it is beneficial to ensure the radiation performance of the antenna 310.

[0067] like Figure 1 as well as Figure 2 As shown, the thickness direction of the dielectric plate 121 is the Z-axis direction, and the first direction is the X-axis direction. Optionally, the thickness direction of the dielectric plate 121 is arranged in the same direction as the thickness direction of the electronic device 10, and the first direction is the length direction of the electronic device 10.

[0068] like Figure 2 As shown, in some embodiments, along the thickness direction of the dielectric plate 121 , at least one transmission layer 124 is sandwiched between the connection layer 122 and the signal layer 123 .

[0069] Compared with other circuit layers, the connection layer is arranged closer to the outside of the dielectric plate or on the surface of the dielectric plate, so as to facilitate electrical connection with the connector and easy assembly.

[0070] It should be noted that there may be various specific implementations of the connector, including but not limited to a board-to-board connector (BTB), a flat cable connector, an edge connector, a riser card, and a connector.

[0071] like Figure 5 as well as Figure 6 As shown, in some embodiments, along the thickness direction of the dielectric plate 121 , at least two transmission layers 124 are sandwiched between the connection layer 122 and the signal layer 123 , and the transmission layers 124 adjacent to the signal layer 123 are each provided with a second avoidance groove 102 .

[0072] like Figure 5 as well as Figure 7 As shown, in some embodiments, the transmission layer 124 includes at least two layers. Along the thickness direction of the dielectric plate 121 , the signal layer 123 is sandwiched between two adjacent transmission layers 124 , and both transmission layers 124 are provided with a second avoidance groove 102 .

[0073] In combination with the above embodiments, it can be seen that the transmission device 100 can integrate the signal line 1231 and the transmission line 1241, and has flexible wiring. The signal layer 123 and the transmission layer 124 can be flexibly set according to actual needs, and the impedance of the signal line 1231 can be well consistent with the impedance of the connector 110, so that the transmission device 100 has good loss control.

[0074] like Figure 2 as well as Figure 3 As shown, in some embodiments, the connection layer 122 includes a third metal layer 1223 that is insulated from the first electrical connection portion 1221 and the second electrical connection portion 1222. Thus, the provision of the third metal layer 1223 can at least provide the first electrical connection portion 1221 and the second electrical connection portion 1222 with good anti-interference capabilities, thereby ensuring the accuracy and stability of signal transmission.

[0075] like Figure 8 as well as Figure 9As shown, in some embodiments, along the thickness direction of the dielectric plate 121, the connection layer 122 is adjacent to the signal layer 123, and the third metal layer 1223 is provided with a third avoidance groove 103. On the orthographic projection plane of the dielectric plate 121 in the thickness direction, the signal line 1231 is projected within the second avoidance groove 102 and the third avoidance groove 103. In this way, the signal line 1231 is not affected by the third metal layer 1223. Combined with an appropriate dielectric thickness, the desired characteristic impedance is achieved, thereby ensuring good consistency between the impedance of the signal line 1231 and the impedance of the connector 110, thereby achieving good loss control for the transmission device 100.

[0076] See you later Figure 1 As shown, in some embodiments, the connector 110 includes at least two. The first electrical connection portion 1221 includes at least two, and corresponds one to one with the connector 110. At least two first electrical connection portions 1221 are spaced apart on both sides of the flexible circuit board 120, and are electrically connected to the two ends of the signal line 1231 respectively. In this way, the two ends of the signal line 1231 are respectively connected to the corresponding connector 110 through the first electrical connection portion 1221. Combined with the embodiment of the above-mentioned feed circuit board, one end of the signal line 1231 is connected to the control main board 200 through the connector 110, and the other end of the signal line 1231 is connected to the feed circuit board through the connector 110, thereby improving the assembly convenience of the electronic device 10.

[0077] See you later Figure 1 As shown, in some embodiments, the connector 110 includes at least two. The second electrical connection portion 1222 includes at least two, and corresponds one to one with the connector 110. At least two second electrical connection portions 1222 are spaced apart on both sides of the flexible circuit board 120, and are respectively electrically connected to the two ends of the transmission line 1241. In this way, the two ends of the transmission line 1241 are respectively connected to the corresponding connector 110 through the first electrical connection portion 1221. In combination with the embodiment of the above-mentioned feed circuit board, one end of the transmission line 1241 is connected to the control main board 200 through the connector 110, and the other end of the transmission line 1241 is connected to the feed circuit board through the connector 110, thereby improving the assembly convenience of the electronic device 10.

[0078] like Figure 4 As shown, in some embodiments, on the signal layer 123, the width of the signal line 1231 is L1, and the minimum spacing between the signal line 1231 and the first metal layer 1232 is L2, where L2 ≥ L1 / 2. This ensures the transmission efficiency of the signal line 1231 and improves the radiation efficiency of the antenna 310, while also ensuring its shielding effect.

[0079] like Figure 5As shown, in some embodiments, the width of the signal line 1231 is L1. On the orthographic projection plane of the dielectric plate 121 in the thickness direction, the width within the second avoidance slot 102 is L3, where L3 ≥ 2L1. This ensures the transmission efficiency of the signal line 1231 and improves the radiation efficiency of the antenna 310. At the same time, the signal line 1231 is not affected by the second metal layer 1242. Combined with an appropriate dielectric thickness, the desired characteristic impedance is achieved.

[0080] Optionally, combined Figure 8 As shown, in some embodiments, the width of the signal line 1231 is L1. On the orthographic projection plane of the dielectric plate 121 in the thickness direction, the width within the third avoidance slot 103 is L4, where L4 ≥ 2L1. This ensures the transmission efficiency of the signal line 1231 and improves the radiation efficiency of the antenna 310. At the same time, the signal line 1231 is not affected by the third metal layer 1223. Combined with an appropriate dielectric thickness, the desired characteristic impedance is achieved.

[0081] Combine Figure 10 As shown, in some embodiments, the impedance of connector 110 is 50Ω, L1 = 0.4mm, L2 ≥ 0.2mm, and L3 ≥ 0.8mm. Thus, by optimizing the structure of flexible circuit board 120, the impedance of signal line 1231 can also be controlled to approximately 50Ω, which is highly consistent with the impedance of connector 110, thus achieving good loss control for transmission device 100.

[0082] In some embodiments, the flexible circuit board includes an MPI circuit board. MPI, Modified PI (modified polyimide), as a high-performance flexible material, has shown significant advantages in radio frequency (RF) and microwave transmission applications, especially in antenna design and manufacturing. Compared with flexible circuit boards made of traditional polyimide (PI) and other materials, MPI circuit boards reduce the manufacturing cost of antennas and related components and can maintain good signal transmission quality (especially in the millimeter wave band required for high frequency and 5G communications). It also has good mechanical stability, durability and thermal stability, and can maintain its physical and electrical properties under different environmental conditions. Moreover, the modified polyimide has high flexibility, making it very suitable for manufacturing thin, lightweight transmission components, which can adapt to the development of thin and light electronic devices. Combined with the technical solution disclosed in the present invention, the MPI circuit board can integrate signal lines and transmission lines, and the impedance of the signal line is well consistent with the impedance of the connector, so that the transmission device has good loss control.

[0083] The foldable electronic device 10 disclosed herein may include a ranging device, a scanning device, a shooting device, a handheld device, a vehicle-mounted device, a wearable device, a monitoring device, a cellular phone, a smart phone, a personal digital assistant computer, a tablet computer, a notebook computer, a laptop computer, a camera, a video recorder, a camera, a vehicle-mounted computer, and other devices with display functions.

[0084] Reference Figure 11 As shown, in some embodiments, the foldable electronic device 10 also includes at least one or more of the following components: a processing component 11, a memory 12, a power component 13, a multimedia component 14, an audio component 15, an input / output interface 16, a sensor component 17, and a communication component 18.

[0085] The processing component typically controls the overall operation of the foldable electronic device, such as operations associated with the display, phone calls, data communications, camera operation, and recording. The processing component includes at least one or more processors to execute instructions to complete all or part of the steps of the aforementioned method. Furthermore, the processing component includes at least one or more modules to facilitate interaction between the processing component and other components. For example, the processing component may include at least a multimedia module to facilitate interaction between the multimedia component and the processing component.

[0086] The memory is configured to store various types of data to support operations on the foldable electronic device. Examples of such data include instructions for any application or method operating on the foldable electronic device, contact data, phone book data, messages, pictures, videos, etc. The memory can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, magnetic disk, or optical disk.

[0087] The control motherboard includes processing components and memory.

[0088] The power supply assembly provides power to various components of the foldable electronic device. The power supply assembly includes at least a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the foldable electronic device.

[0089] The multimedia component includes the display module of the present disclosure to facilitate human-computer interaction. If the display module includes a touch panel, the display module can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component includes a front camera and / or a rear camera. When the foldable electronic device is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0090] The audio component is configured to output and / or input audio signals. For example, the audio component includes a microphone (MIC), which is configured to receive external audio signals when the foldable electronic device is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in a memory or transmitted via a communication component. In some embodiments, the audio component further includes a speaker for outputting audio signals.

[0091] The input / output interface provides an interface between the processing component and the peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0092] The sensor assembly includes one or more sensors for providing various aspects of status assessment for the foldable electronic device. For example, the sensor assembly can detect the open / closed state of the foldable electronic device, the relative positioning of components, such as the display and keypad of the foldable electronic device. The sensor assembly can also detect changes in the position of the foldable electronic device or a component of the foldable electronic device, the presence or absence of user contact with the foldable electronic device, the orientation or acceleration / deceleration of the foldable electronic device, and the temperature change of the foldable electronic device. The sensor assembly includes at least a proximity sensor, which is configured to detect the presence of nearby objects without any physical contact. The sensor assembly also includes at least a photosensitive element, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly also includes at least an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0093] The communication component is configured to facilitate wired or wireless communication between the foldable electronic device and other devices. The foldable electronic device can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G or 6G, or a combination thereof. In an exemplary embodiment, the communication component receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0094] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present disclosure.

[0095] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first," "second," etc., may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0096] In this disclosure, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0097] In the present disclosure, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0098] It should be noted that when an element is referred to as being "fixed to," "disposed on," "fixed on," or "installed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. Furthermore, when an element is considered to be "fixedly connected" to another element, the two may be fixed in a detachable connection manner or in a non-detachable connection manner, such as socketing, snap-fitting, integral molding, welding, etc., which can be achieved in traditional technologies and will not be elaborated here.

[0099] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above embodiments merely illustrate several implementations of the present disclosure, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the utility model concept of the present disclosure, and these modifications and improvements are all within the scope of protection of the present disclosure.

Claims

1. A transmission device, characterized in that: include: Connectors; as well as A flexible circuit board comprises a dielectric board and a plurality of circuit layers, wherein the plurality of circuit layers are sequentially spaced apart on the dielectric board along the thickness direction of the dielectric board; One of the circuit layers is a connection layer, the connection layer is provided with a first electrical connection portion and a second electrical connection portion, the first electrical connection portion and the second electrical connection portion are insulated and electrically connected to the connector respectively; At least one of the circuit layers is a signal layer, the signal layer including a signal line and a first metal layer, the first metal layer having a first avoidance groove for avoiding the signal line, the signal line being arranged in the first avoidance groove and insulated from the first metal layer, and the signal line being connected to the connector via the first electrical connection portion; At least one of the circuit layers is a transmission layer, comprising a transmission line and a second metal layer insulated from the transmission line, wherein the transmission line is insulated from the signal line and connected to the connector via the second electrical connector; Among them, along the thickness direction of the dielectric plate, at least one transmission layer is adjacent to the signal layer, the second metal layer is provided with a second avoidance groove, and on the orthographic projection surface in the thickness direction of the dielectric plate, the signal line is projected into the second avoidance groove.

2. The transmission device according to claim 1, characterized in that Along the thickness direction of the dielectric plate, at least one transmission layer is sandwiched between the connection layer and the signal layer.

3. The transmission device according to claim 2, characterized in that Along the thickness direction of the dielectric plate, at least two transmission layers are sandwiched between the connection layer and the signal layer, and the transmission layers adjacent to the signal layer are each provided with the second avoidance groove.

4. The transmission device according to claim 1, characterized in that The transmission layer includes at least two layers. Along the thickness direction of the dielectric plate, the signal layer is sandwiched between two adjacent transmission layers, and both transmission layers are provided with the second avoidance groove.

5. The transmission device according to claim 1, characterized in that The connection layer includes a third metal layer insulated from the first electrical connection portion and the second electrical connection portion; And / or, compared with the other circuit layers, the connection layer is arranged closer to the outer side of the dielectric plate or arranged on the surface of the dielectric plate.

6. The transmission device according to claim 5, characterized in that Along the thickness direction of the dielectric plate, the connection layer is adjacent to the signal layer, the third metal layer is provided with a third avoidance groove, and on the orthographic projection surface in the thickness direction of the dielectric plate, the signal line is projected into the second avoidance groove and the third avoidance groove.

7. The transmission device according to claim 1, characterized in that The connectors include at least two; The first electrical connection parts include at least two, and correspond one to one with the connectors; at least two first electrical connection parts are spaced apart and arranged on both sides of the flexible circuit board, and are electrically connected to both ends of the signal line respectively; And / or, the second electrical connection parts include at least two, and correspond one to one with the connectors; and at least two second electrical connection parts are spaced apart and arranged on both sides of the flexible circuit board, and are electrically connected to both ends of the transmission line respectively.

8. The transmission device according to any one of claims 1 to 7, characterized in that: The flexible circuit board includes an MPI circuit board; and / or, on the signal layer, the width of the signal line is L1, the minimum distance between the signal line and the first metal layer is L2, and L2 ≥ L1 / 2; And / or, the width of the signal line is L1, and on the orthographic projection surface in the thickness direction of the dielectric plate, the width in the second avoidance groove is L3, and L3 ≥ 2L1.

9. The transmission device according to claim 8, characterized in that The impedance of the connector is 50Ω, L1=0.4mm, L2≥0.2mm, and L3≥0.8mm.

10. An electronic device, characterized in that: It comprises a control mainboard and the transmission device according to any one of claims 1 to 9, wherein the control mainboard is electrically connected to the flexible circuit board through the connector.

11. The electronic device according to claim 10, characterized in that The electronic device also includes a shell assembly and a feed circuit board. The shell assembly is provided with an antenna. The feed circuit board and the control main board are arranged in the shell assembly at intervals along the first direction and are connected through the flexible circuit board. The feed circuit board cooperates with the antenna for power feeding, and the feed circuit board is connected to the control main board through the signal line.

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