Flexible printed circuit board and antenna assembly including same

Abstract

The invention relates to a flexible printed circuit board and an antenna assembly including the same. A flexible printed circuit board according to one embodiment of the present disclosure is configured from a plurality of layers, and includes: a first substrate portion including a first power supply pattern disposed in any one of the plurality of layers and electrically connected to an antenna, and a plurality of first ground patterns disposed on both sides of the first power supply pattern; a second substrate part including a second power supply pattern disposed in any one of the plurality of layers and electrically connected to a cable, and a plurality of second ground patterns disposed on both sides of the second power supply pattern; and a third substrate part disposed between the first substrate part and the second substrate part so as to cover a part of a side edge of the glass, the third substrate part including: a third power supply pattern disposed in a first layer adjacent to the glass among the plurality of layers; and a third ground pattern disposed on the second layer, both ends of the third power supply pattern being electrically connected to the first power supply pattern and the second power supply pattern, respectively, and both ends of the third ground pattern being electrically connected to the first ground pattern and the second ground pattern, respectively. The third feed pattern includes a first feed portion adjacent to one surface of the glass, a second feed portion adjacent to a side edge of the glass, and a third feed portion adjacent to the other surface of the glass. The interval between the orthographic projections of the first feed section and the third feed section is gradually increased as the distance from the second feed section is greater than the distance between the orthographic projections of the first feed section and the third feed section.

Description

Technical Field

[0001] This disclosure relates to a flexible printed circuit board and an antenna assembly comprising therein, and more specifically, to a flexible printed circuit board electrically connected to an antenna and an antenna assembly comprising therein. Background Technology

[0002] A vehicle is a means of transporting people or goods using kinetic energy. A typical example of a vehicle is an automobile.

[0003] Recently, research and development of various in-vehicle systems has been actively promoted for user convenience and safety. In particular, the importance of wireless communication systems that enable communication between vehicles and other vehicles, surrounding objects, and base stations is increasing. Furthermore, wireless communication systems using 5G technology are expected to be commercialized in the future, thereby providing more diversified services through vehicles.

[0004] Previously, antennas used for wireless communication were typically mounted as independent structures on one side of the vehicle body or located on the lower part of the vehicle body or roof. However, when the antenna is mounted as an independent structure on one side of the vehicle body, the area where the antenna is located appears obtrusive compared to other areas, potentially becoming a design issue. Furthermore, placing the antenna on the lower part of the vehicle body or roof can significantly reduce antenna efficiency due to the materials used in those areas.

[0005] On the other hand, considering aesthetics and antenna efficiency, transparent antennas can be configured on vehicle glass. Currently, feeding transparent antennas involves soldering RF cables to a substrate connected to the transparent antenna. However, existing methods suffer from inconvenient assembly of the transparent antenna and related structures, as well as increased size. Furthermore, when a transparent antenna operates as a wideband antenna, a solution is needed that minimizes antenna feed loss and maximizes antenna efficiency. Summary of the Invention

[0006] Technical problems to be solved

[0007] The purpose of this disclosure is to resolve the aforementioned problems, as well as other issues.

[0008] Another objective is to provide a flexible printed circuit board for stable connection of antennas and connectors, and an antenna assembly containing therein.

[0009] Another objective is to provide flexible printed circuit boards with various structures optimized for the glass positions in which the antenna is attached between two layers of glass, and antenna assemblies containing them.

[0010] Another objective is to provide flexible printed circuit boards with minimized thickness and antenna assemblies containing them.

[0011] Another objective is to provide a flexible printed circuit board and an antenna assembly containing it that can reduce feed losses for antennas operating in broadband.

[0012] Another objective is to provide flexible printed circuit boards and antenna assemblies containing them that can improve the efficiency of antennas operating in broadband.

[0013] Another objective is to provide a flexible printed circuit board that can prevent interference between feed lines and reduce feed loss, and an antenna assembly containing the board.

[0014] Another objective is to provide a flexible printed circuit board for antennas that can optimize the area of ​​opaque regions of glass, and an antenna assembly containing the board.

[0015] means of solving technical problems

[0016] A flexible printed circuit board according to an embodiment of the present disclosure for achieving the above-mentioned objectives comprises multiple layers and may include: a first substrate portion including a first feed pattern disposed on any one of the multiple layers and electrically connected to an antenna, and a plurality of first ground patterns disposed on both sides of the first feed pattern; a second substrate portion including a second feed pattern disposed on any one of the multiple layers and electrically connected to a cable, and a plurality of second ground patterns disposed on both sides of the second feed pattern; and a third substrate portion disposed between the first substrate portion and the second substrate portion to cover a portion of the side edge of a glass, the third substrate portion comprising: a third A power feeding pattern is disposed in the first layer adjacent to the glass in the plurality of layers; and a third grounding pattern is disposed in the second layer. The two ends of the third power feeding pattern are electrically connected to the first power feeding pattern and the second power feeding pattern, respectively. The two ends of the third grounding pattern are electrically connected to the first grounding pattern and the second grounding pattern, respectively. The third power feeding pattern includes a first power feeding portion adjacent to one side of the glass, a second power feeding portion adjacent to the side edge of the glass, and a third power feeding portion adjacent to the other side of the glass. The spacing between the orthographic projections of the first power feeding portion and the third power feeding portion increases as they move away from the second power feeding portion.

[0017] An antenna assembly according to an embodiment of the present disclosure for achieving the above-mentioned objectives may include: a main antenna including a main feed line and a plurality of main ground patterns; a secondary antenna including a secondary feed line connected to the main feed line and a plurality of secondary ground patterns connected to the plurality of main ground patterns; and a flexible printed circuit board composed of multiple layers, including: a first substrate portion including a first feed pattern disposed on any one of the plurality of layers and connected to the secondary feed line and a plurality of first ground patterns connected to the plurality of secondary ground patterns; a second substrate portion including a second feed pattern disposed on any one of the plurality of layers and electrically connected to a cable and a plurality of second ground patterns disposed on both sides of the second feed pattern; and a third substrate portion disposed on the first substrate portion. The third substrate portion, which covers a portion of the side edge of the glass between the second substrate portion and the aforementioned third substrate portion, includes: a third feed pattern disposed in the first layer adjacent to the glass in the plurality of layers; and a third ground pattern disposed in the second layer. The two ends of the third feed pattern are electrically connected to the first feed pattern and the second feed pattern, respectively. The two ends of the third ground pattern are electrically connected to the first ground pattern and the second ground pattern, respectively. The third feed pattern includes a first feed portion adjacent to one side of the glass, a second feed portion adjacent to the side edge of the glass, and a third feed portion adjacent to the other side of the glass. The spacing between the orthographic projections of the first feed portion and the third feed portion increases as they move away from the second feed portion.

[0018] Invention Effects

[0019] The effects of the flexible printed circuit board according to this disclosure and the antenna assembly containing therein will be described below.

[0020] According to at least one embodiment of this disclosure, the antenna and connector can be stably connected.

[0021] Furthermore, according to at least one embodiment of this disclosure, various structures can be configured to optimize the glass position for attaching the antenna in the two layers of glass.

[0022] Furthermore, according to at least one embodiment of this disclosure, the thickness of the flexible printed circuit board can be minimized.

[0023] In addition, according to at least one embodiment of this disclosure, it is possible to reduce the feed loss of antennas operating in broadband.

[0024] Furthermore, according to at least one embodiment of this disclosure, antenna efficiency in broadband operation can be improved.

[0025] In addition, according to at least one embodiment of this disclosure, interference between feeder lines can be prevented, thereby reducing feeder losses.

[0026] In addition, according to at least one embodiment of this disclosure, an antenna optimized for the area of ​​the opaque region of the glass can be provided.

[0027] The following detailed description will clearly demonstrate that other aspects of this disclosure may apply. However, those skilled in the art will readily understand the spirit and various variations and modifications within the scope of this disclosure; therefore, the detailed description and specific embodiments, such as preferred embodiments, should be understood as examples. Attached Figure Description

[0028] Figure 1 The appearance of a vehicle according to an embodiment of the present disclosure is shown.

[0029] Figure 2 as well as Figure 3 This is a diagram with reference to illustrate the position of the configured antenna according to an embodiment of the present disclosure.

[0030] Figure 4 This is a block diagram referred to in illustrating a vehicle according to an embodiment of the present disclosure.

[0031] Figures 5 to 16 The figures are referenced in illustrating antenna assemblies according to various embodiments of the present disclosure.

[0032] Figures 17 to 23 The figures are referenced in illustrating a flexible printed circuit board and an antenna assembly according to an embodiment of the present disclosure.

[0033] Figures 24 to 27 The figure is referenced in illustrating a flexible printed circuit board and an antenna assembly according to another embodiment of the present disclosure.

[0034] Figures 28 to 39 The figure is shown in the illustration of a flexible printed circuit board and antenna assembly according to yet another embodiment of the present disclosure.

[0035] Figures 40 to 51 The figure is shown in the illustration of a flexible printed circuit board and antenna assembly according to yet another embodiment of the present disclosure. Detailed Implementation

[0036] This disclosure will now be described in detail with reference to the accompanying drawings. For clarity and brevity, parts irrelevant to the description have been omitted from the drawings, and the same reference numerals are used throughout the specification for identical or very similar parts.

[0037] The suffixes "module" and "section" used in the following description are merely for convenience in writing this specification and do not have any particularly important meaning or function in themselves. Therefore, the above "module" and "section" can be used interchangeably.

[0038] In this application, terms such as "comprising" or "having" are used to specify the presence of features, numbers, steps, actions, constituent elements, components, or combinations thereof described in the specification, and should be understood to preclude the possibility of having or adding one or more other features, numbers, steps, actions, constituent elements, components, or combinations thereof.

[0039] Furthermore, in this specification, terms such as "first," "second," etc., may be used to describe multiple elements; however, these elements are not limited to these terms. These terms are used only to distinguish one element from others.

[0040] Reference Figures 1 to 3 The overall length refers to the length from the front to the rear of vehicle 1, the overall width refers to the width of vehicle 1, and the overall height refers to the length from the bottom of the wheels to the roof. In the following description, the overall length direction L can be used as the reference direction for measuring the overall length of vehicle 1, the overall width direction W can be used as the reference direction for measuring the overall width of vehicle 1, and the overall height direction H can be used as the reference direction for measuring the overall height of vehicle 1.

[0041] For communication purposes, vehicle 1 may include at least one antenna. For example, vehicle 1 may include a transmitting antenna for transmitting signals, a receiving antenna for receiving signals, and / or a transceiver antenna for transmitting and receiving signals. Vehicle 1 can transmit and receive signals in multiple frequency bands via the antenna. For example, vehicle 1 can transmit and receive signals from GPS, 4G wireless communication, 5G wireless communication, Bluetooth, wireless local area network, etc.

[0042] Vehicle 1 can communicate via an antenna. Vehicle 1 can perform V2X (Vehicle-to-Everything) communication. V2X communication can include V2V (Vehicle-to-Vehicle) communication (communication between vehicles), V2I (Vehicle-to-Infrastructure) communication (communication between vehicles and infrastructure such as base stations (eNBs) and RSUs (Road Side Units), V2P (Vehicle-to-Pedestrian) communication (communication between user terminals and vehicles), and V2N (Vehicle-to-Network) communication (communication between vehicles and networks).

[0043] Vehicle 1 may include a transparent antenna made of a transparent material. The transparent antenna can be formed by forming an antenna pattern on a substrate of the transparent material. In this disclosure, the case where the substrate of the transparent material is made of polyethylene terephthalate (PET) is used as an example, but it is not limited to this.

[0044] A transparent antenna can be configured within a dielectric material contained in vehicle 1. The transparent antenna can be configured in the upper region 200a, lower region 200b, and / or side region 200c of the windshield 10a of vehicle 1. The transparent antenna can also be configured in the upper region 200d and / or lower region 200e of the rear windshield 10b, a region 200f of the quarter glass 10c, etc. For example, vehicle 1 can transmit and receive signals corresponding to the overall length direction L using the transparent antenna configured in the windshield 10a and / or rear windshield 10b. For example, vehicle 1 can transmit and receive signals corresponding to the overall width direction W using the transparent antenna configured in the quarter glass 10c.

[0045] The following explanation will be based on the example of vehicle 1 using a transparent antenna to perform Sub-6GHz 5G communication at frequencies below 6GHz.

[0046] Reference Figure 4 Vehicle 1 may include an object detection device 410, a communication device 420, a user interface device 431, a driving operation device 432, a vehicle drive device 433, a driving system 434, a navigation system 435, a sensing unit 436, an interface unit 437, a memory 438, a power supply unit 439, and / or a control unit 440. According to embodiments, vehicle 1 may also include other constituent elements besides those described in this specification, or may exclude some of the described constituent elements.

[0047] The object detection device 410 is used to detect objects located outside the vehicle 1. Objects can be various objects related to the movement of the vehicle 1. Objects can be divided into moving objects and stationary objects. For example, moving objects can include other moving vehicles and moving pedestrians. For example, stationary objects can include traffic signals, roads, structures, other stationary vehicles, and stationary pedestrians.

[0048] The object detection device 410 may include a processor 411, a camera 412, a radar 413, a lidar 414, an ultrasonic sensor 415, and / or an infrared sensor 416. According to embodiments, the object detection device 410 may also include other constituent elements besides those described, or may exclude some of the described constituent elements.

[0049] The processor 411 can control the overall operation of each unit of the object detection device 410. Based on the data acquired by each unit of the object detection device 410, the processor 411 can generate object information. The object information may include information about the existence of an object, the object's position, the distance between vehicle 1 and the object, and the relative speed between vehicle 1 and the object.

[0050] According to an embodiment, the object detection device 410 may include multiple processors 411 or may not include processors 411. For example, a camera 412, radar 413, lidar 414, ultrasonic sensor 415, and / or infrared sensor 416 may each include a processor. The object detection device 410 may operate under the control of a processor or control unit 440 within the vehicle 1.

[0051] Communication device 420 is a device for communicating with external devices. These external devices may be other vehicles, mobile terminals, or servers. For communication purposes, communication device 420 may include at least one of a transmitting antenna, a receiving antenna, an RF (Radio Frequency) circuit capable of implementing various communication protocols, and an RF element.

[0052] The communication device 420 may include a processor 421, a short-range communication unit 422, a location information unit 423, a V2X communication unit 424, an optical communication unit 425, a broadcast transceiver unit 426, and / or an ITS communication unit 427. According to embodiments, the communication device 420 may also include other constituent elements besides those described, or may exclude some of the described constituent elements.

[0053] The processor 421 can control the overall operation of each unit of the communication device 420. The processor 421 can send and receive signals through each unit of the communication device 420. According to the embodiment, the communication device 420 may include multiple processors 421 or may not include a processor 421. When the communication device 420 does not include a processor 421, the communication device 420 can operate according to the control of the processors of other devices in the vehicle 1 or the control unit 170.

[0054] The short-range communication unit 422 is a unit for performing short-range communication. The short-range communication unit 422 can support short-range communication using at least one of the following technologies: Bluetooth, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra-Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus). The short-range communication unit 422 forms a wireless area network, thereby enabling short-range communication between the vehicle 1 and at least one external device.

[0055] The location information unit 423 is a unit used to acquire the location information of vehicle 1. For example, the location information unit 423 may include a GPS (Global Positioning System) module or a DGPS (Differential Global Positioning System) module.

[0056] The V2X communication unit 424 is a unit for performing V2X communications such as V2V (Vehicle-to-Vehicle), V2I (Vehicle-to-Infrastructure), V2P (Vehicle-to-Pedestrian), and V2N (Vehicle-to-network). The V2X communication unit 424 may include RF circuitry capable of implementing protocols for communication with infrastructure (V2I), communication between vehicles (V2V), communication with pedestrians (V2P), and communication with networks (V2N).

[0057] The ITS (Intelligent Transport Systems) communication unit 427 can transmit and / or receive information, data, or signals from the traffic system. For example, the ITS communication unit 427 can receive road traffic information from the traffic system and provide it to the control unit 440. For example, the ITS communication unit 427 can receive control signals from the traffic system and provide them to the control unit 440 or a processor located inside the vehicle 1.

[0058] User interface device 431 is a device for enabling communication between vehicle 1 and user. User interface device 431 can receive user input and provide the user with information generated in vehicle 1. Through user interface device 431, vehicle 1 can implement UI (User Interfaces) or UX (User Experience).

[0059] User interface device 431 may include an input unit for receiving user input, an internal camera for capturing images of the interior of vehicle 1, a biosensor for acquiring biometric information such as the user's fingerprint and heart rate, an output unit for generating outputs related to vision, hearing, or touch, and a processor. According to embodiments, user interface device 431 may also include other constituent elements besides those described, or may exclude some of the described constituent elements.

[0060] The driving control device 432 is a device for receiving user input for driving. The driving control device 432 may include a steering input device for receiving input from the user on the driving direction of the vehicle 1, an acceleration input device for receiving input from the user on the acceleration of the vehicle 1, and / or a braking input device for receiving input from the user on the deceleration of the vehicle 1, etc.

[0061] The vehicle drive unit 433 is a device that electrically controls the drive of various devices within the vehicle 1. The vehicle drive unit 433 may include a powertrain drive unit, a chassis drive unit, a door / window drive unit, a safety device drive unit, a lighting drive unit, and / or an air conditioning drive unit. According to embodiments, the vehicle drive unit 433 may also include other constituent elements besides those described, or may exclude some of the described constituent elements.

[0062] The driving system 434 is a system that controls various operations of the vehicle 1. The driving system 434 can operate in automatic driving mode. The driving system 434 can provide control signals to the vehicle drive unit 433. The driving system 434 may include a driving system 710 for controlling the movement of the vehicle 1, a departure system for controlling the departure of the vehicle 1, and / or a parking system for controlling the parking of the vehicle 1. According to embodiments, the driving system 434 may also include other constituent elements besides those described, or may exclude some of the described constituent elements.

[0063] The navigation system 435 can provide navigation information. The navigation information may include at least one of map information, a set destination, route information set based on the destination, information about various objects along the route, lane information, and the vehicle's current location. According to an embodiment, the navigation system 435 can update stored information based on data received via the communication device 420.

[0064] The sensor unit 436 can detect the vehicle's status. The sensor unit 436 may include IMU (inertial navigation unit) sensors (including accelerometers, gyroscopes, etc.), collision sensors, wheel sensors, speed sensors, tilt sensors, weight sensors, heading sensors, position modules, vehicle forward / reverse sensors, battery sensors, fuel sensors, tire sensors, steering sensors based on steering wheel rotation, interior temperature sensors, interior humidity sensors, ultrasonic sensors, illuminance sensors, accelerator pedal position sensors, brake pedal position sensors, etc. In addition, the sensor unit 436 may also include accelerator pedal sensors, pressure sensors, engine speed sensors, air flow sensors (AFS), intake air temperature sensors (ATS), coolant temperature sensors (WTS), throttle position sensors (TPS), TDC sensors, crankshaft angle sensors (CAS), etc.

[0065] The interface unit 437 can serve as a pathway between various external devices connected to the vehicle 1. For example, the interface unit 437 may have a port capable of connecting to a mobile terminal. In this case, the interface unit 437 can exchange data with the mobile terminal connected to the port.

[0066] The memory 438 is electrically connected to the control unit 440. The memory 438 can store basic data about the unit, control data for the control unit's operation, input / output data, etc. In terms of hardware, the memory 438 can be various storage devices such as ROM, RAM, EPROM, flash memory, hard disk, etc. The memory 438 can store various types of data used to control the overall operation of the vehicle 1, such as programs for processing or controlling the control unit 440.

[0067] According to the embodiment, the memory 438 may be integrally formed with the control unit 440 or formed as a subordinate component of the control unit 440.

[0068] The power supply unit 439 can supply the power required for the operation of each component element. The power supply unit 439 can obtain power from batteries or the like inside the vehicle.

[0069] The control unit 440 can control the overall operation of various units within the vehicle 1. The control unit 440 can be named ECU (Electronic Control Unit).

[0070] The processor and control unit 440 included in vehicle 1 may be implemented by at least one of ASICs (application specific integrated circuits), DSPs (digital signal processors), DSPDs (digital signal processing devices), PLDs (programmable logic devices), FPGAs (field programmable gate arrays), processors, controllers, microcontrollers, microprocessors, or electrical units for performing other functions.

[0071] Reference Figure 5 as well as Figure 6 Glass 10 and 10' can be attached to or adhered to the vehicle frame 9, covering the opening 9h of the frame 9. For example, glass 10 and 10' can be glass from vehicle 1 such as windshield 101, door window 102 and 103, triangular window 104, the aforementioned rear windshield, the aforementioned rearview mirror, sunroof 105, or lampshade 106 (see reference). Figure 1 The groove 9g of frame 9 can extend along the edges of glass 10, 10', and can define the boundary of opening 9h. For example, frame 9 can be made of metal, and sealant 7 can be filled between groove 9g and glass 10, 10'.

[0072] Antenna 20 can be located on one side of glass 10 or inside glass 10'. Antenna 20 can be transparent. Antenna 20 can be flexible.

[0073] The connection module 100 can be configured between the edge of the glass 10, 10' and the antenna 20, and can be located on the aforementioned side of the glass 10. The connector 130 of the connection module 100 can be electrically connected to the antenna 20 via the substrate 30. The inner cover 8 can face the glass 10, 10' opposite to the frame 9, and can cover the connection module 100. The inner cover 8 can also be referred to as the interior cover 8. The connection module 100 can be referred to as the connection device 100 or the connection assembly 100.

[0074] Reference Figure 7 as well as Figure 8 Glass 10' can be double-laminated glass. That is, glass 10' can include two overlapping panes of glass 10, 10a. The first pane of glass 10 can have a transparent region 11 and an opaque region 12. The opaque region 12 can be a black masking region or a frit region. For example, the transparent region 11 can occupy most of the glass 10, and the opaque region 12 can be adjacent to one edge of the glass 10. The transparent region 11 and the opaque region 12 can have the same width W10, and the height H11 of the transparent region 11 can be higher than the height H12 of the opaque region 12.

[0075] The second glass 10a may have only a transparent area. Alternatively, the second glass 10a may have both transparent and opaque areas, just like the first glass 10.

[0076] Antenna 20 can be located between the first glass 10 and the second glass 10a corresponding to the transparent area 11. Connection module 100 can be located on the area of ​​the second glass 10a corresponding to the opaque area 12 of the first glass 10. Connector 130 of connection module 100 can be connected to antenna 20 via substrate 30. In this case, a portion of substrate 30 can be located inside glass 10', and another portion of substrate 30 can be bent along one edge of glass 10' and connected to the aforementioned portion of substrate 30 and connector 130. Alternatively, connection module 100 can also be positioned corresponding to the transparent area 11.

[0077] m antennas 20 can be located inside the glass 10', and m connecting modules 100 can be located on the glass 10' (where m is a natural number greater than 1). The first antenna 20a can be located inside the glass 10' in a manner corresponding to the transparent region 11, and can be electrically connected to the second connecting module 100b. The second antenna 20b can be located next to the first antenna 20a inside the glass 10', and can be electrically connected to the first connecting module 100a. For example, the first antenna 20a and the second antenna 20b can be symmetrical about the center line LL' of the glass 10'. For example, the second connecting module 100b and the first connecting module 100a can be symmetrical about the center line LL' of the glass 10'.

[0078] On the other hand, the rubber seal 13 can be attached to or bonded to a portion of the glass 10' corresponding to the opaque area 12, adjacent to the connection module 100.

[0079] Reference Figure 9 as well as Figure 10 The directions shown in the accompanying drawings, namely up (U), down (D), left (Le), right (Ri), front (F), and back (R), are for illustrative purposes only, and the technical concepts disclosed in this specification are not limited to these.

[0080] A pair of connecting modules 100a and 100b can be symmetrical. That is, the description of the first connecting module 100a can be applied to the second connecting module 100b in a symmetrical manner (and vice versa). Furthermore, the first cable C1 connected to the jack 134 of the connector 130 of the first connecting module 100a and the second cable C2 connected to the jack 134 of the connector 130 of the second connecting module 100b are horizontally arranged between the first connecting module 100a and the second connecting module 100b (see reference). Figure 7 as well as Figure 8 For example, multiple cables C1 and C2 can be detachably attached to the latch 133 of connector 130. These multiple cables C1 and C2 can be referred to as coaxial cables or RF cables.

[0081] Reference Figure 11The connection module 100 may include a lower housing 110 and an upper housing 120. The lower housing 110 may be referred to as a lower case, bottom housing, or bottom cover. The upper housing 120 may be referred to as an upper case, top housing, or top cover. The lower housing 110 and upper housing 120 may be collectively referred to as housings 110 and 120, or covers 110 and 120. For example, housings 110 and 120 may be made of plastic materials such as PC (Polycarbonate).

[0082] The lower housing 110 may include a base 111 and multiple walls 112, 113, 114, and 115. The base 111 may be referred to as the base plate 111.

[0083] The base 111 can have a quadrilateral plate shape and can define the bottom of the housings 110 and 120. For example, the base 111 can include two long sides 111L1 and 111L2 and two short sides 111S1 and 111S2. A flat surface portion 111a can be formed on the upper surface of the base 111, and the shape of the flat surface portion 111a can correspond to the shape of the base 111. The flat surface portion 111a can be a groove, which can be referred to as a flat surface. A hole 111h can be formed through the flat surface portion 111a along the thickness direction of the base 111. For example, the hole 111h can be a quadrilateral hole with a certain width W1 and length L1, which can be adjacent to the first short side 111S1.

[0084] Multiple walls 112, 113, 114, and 115 may protrude from the edge of the base 111 in a direction intersecting the base 111. For example, the heights of the multiple walls 112, 113, 114, and 115 may be the same or similar to each other.

[0085] A front wall 112 may be located at the first short side 111S1. A first front wall 112a may project upwards from the corner where the first short side 111S1 and the first long side 111L1 intersect. A first portion 112a1 of the first front wall 112a may extend along the first short side 111S1, and a second portion 112a2 of the first front wall 112a may extend along the first long side 111L1. The first front wall 112a may have an "L"-shaped cross-section. A second front wall 112b may project upwards from the corner where the first short side 111S1 and the second long side 111L2 intersect. A first portion 112b1 of the second front wall 112b may extend along the first short side 111S1, and a second portion 112b2 of the second front wall 112b may extend along the second long side 111L2. The second front wall 112b may have an "L"-shaped cross-section. The first front wall 112a and the second front wall 112b can be separated from each other along the length of the first short side 111S1, and can be symmetrical about the center of the first short side 111S1. The second distance d22 between the plurality of second parts 112a2, 112b2 can be smaller than the first distance d21 between the plurality of first parts 112a1, 112b1.

[0086] The rear wall 113 may be located on the second short side 111S2. The first rear wall 113a may protrude upward from the corner where the second short side 111S2 and the first long side 111L1 intersect. A first portion 113a1 of the first rear wall 113a may extend along the second short side 111S2, and a second portion 113a2 of the first rear wall 113a may extend along the first long side 111L1. The first rear wall 113a may have an "L"-shaped cross-section. The second rear wall 113b may protrude upward from the corner where the second short side 111S2 and the second long side 111L2 intersect. A first portion 113b1 of the second rear wall 113b may extend along the second short side 111S2, and a second portion 113b2 of the second rear wall 113b may extend along the second long side 111L2. The second rear wall 113b may have an "L"-shaped cross-section. The first rear wall 113a and the second rear wall 113b can be separated from each other along the length of the second short side 111S2, and can be symmetrical about the center of the second short side 111S2. The second distance between the plurality of second parts 113a2, 113b2 can be smaller than the first distance between the plurality of first parts 113a1, 113b1. For example, each of the above-mentioned first distance and second distance can be the same as each of the first distance and second distance d21, d22.

[0087] Sidewalls 114 can be located on multiple long sides 111L1, 111L2. A first sidewall 114a can project upwards from the first long side 111L1, extend along the first long side 111L1, and be adjacent to the first short side 111S1. A first side hook 114ah can be formed adjacent to the end of the first sidewall 114a on its inner surface. A second sidewall 114b can project upwards from the second long side 111L2, extend along the second long side 111L2, and face the first sidewall 114a. A second side hook 114bh can be formed adjacent to the end of the second sidewall 114b on its inner surface.

[0088] The central wall 115 may be located at the center of the second short side 111S2. The central wall 115 may protrude upward from the second short side 111S2 and may extend along the second short side 111S2. The central hook 115h may be formed adjacent to the end of the central wall 115 on the inner surface of the central wall 115.

[0089] The first opening P1 can be formed between the first rear wall 113a and the first side wall 114a. The second opening P2 can be formed between the first front wall 112a and the second front wall 112b.

[0090] A first slot SL1 can be formed between the first front wall 112a and the first side wall 114a. A second slot SL2 can be formed between the second front wall 112b and the second side wall 114b. A third slot SL3 can be formed between the central wall 115 and the first rear wall 113a. A fourth slot SL4 can be formed between the central wall 115 and the second rear wall 113b. A fifth slot SL5 can be formed between the second side wall 114b and the second rear wall 113b. The multiple slots SL1, SL2, SL3, SL4, and SL5 can be multiple notches. Thus, the side wall 114 and the central wall 115 can be bent or restored from other parts of the lower housing 110.

[0091] The upper housing 120 may be located above the base 111 of the lower housing 110. The edge of the lower surface of the upper housing 120 may form a closed shape that is the same as or similar to the boundary of the planar portion 111a of the base 111. The upper housing 120 may be located inside the plurality of walls 112, 113, 114, 115 of the lower housing 110, between the planar portion 111a and the plurality of hooks 114ah, 114bh, 115h. The upper housing 120 may include a cover portion 121, a receiving portion 122, and a locking portion 123.

[0092] The cover portion 121 may have a solid or hollow block shape. The cover portion 121 may face the first region of the planar portion 111a and may be adjacent to the rear wall 113 and the central wall 115. The cover portion 121 may be referred to as the pressure portion 121 or the fixing portion 121.

[0093] The receiving portion 122 can extend from one end (i.e., the front end) of the cover portion 121 toward the front wall 112 and can face the second region of the flat portion 111a. The aforementioned hole 111h can be formed in the aforementioned second region. The internal space 122S of the receiving portion 122 can communicate with the hole 111h through a first hole 122h1 formed on the side of the receiving portion 122 facing the hole 111h (i.e., the lower surface). The internal space 122S of the receiving portion 122 can communicate with the second opening P2 through a second hole 122h2 formed on the other side (i.e., the front) of the receiving portion 122 facing the second opening P2. On the other hand, the upper surface of the receiving portion 122 can be closed or opened through a third hole 122h3.

[0094] The locking part 123 can protrude from the other end (i.e., the rear end) of the cover 121 toward the central hook 115h. In this case, the height h21 of the cover 121 can be less than the height h22 of the receiving part 122. Alternatively, the height of the cover 121 can be the same as the height h22 of the receiving part 122, and the locking part 123 can be omitted.

[0095] The first width W21 of the cover portion 121 described above may be greater than the first distance between the plurality of first portions 113a1, 113b1, and the same as or smaller than the second distance between the plurality of second portions 113a2, 113b2. The second width W22 of the receiving portion 122 described above may be greater than the first distance d21 between the plurality of first portions 112a1, 112b1, and the same as or smaller than the second distance d22 between the plurality of second portions 112a2, 112b2. For example, the second width W22 may be the same as the first width W21.

[0096] Reference Figure 12 as well as Figure 13 The glass 10' may include two pieces of glass 10, 10a bonded or adhered to each other, and an adhesive film 10Y sandwiched between the multiple pieces of glass 10, 10a. For example, the adhesive film 10Y may be a splash-proof film made of PVB (Polyvinyl Butyral). For example, the adhesive film 10Y may be a splash-proof film made of PVC (Polyvinyl Chloride).

[0097] Antenna 20 can be located between the first glass 10 and the adhesive film 10Y, or between the second glass 10a and the adhesive film 10Y, corresponding to the transparent area 11. Connecting module 100 can be coupled to or attached to glass 10' (on) corresponding to the opaque area 12.

[0098] The connector 130 can be connected to the antenna 20 via the substrate 30. In this case, a portion of the substrate 30 can be located inside the glass 10', and the other portion of the substrate 30 can be bent along one edge of the glass 10' to achieve the connection between the aforementioned portion of the substrate 30 and the connector 130.

[0099] The glass 10', antenna 20, substrate 30, plate 40 and / or connection module 100 can be collectively referred to as antenna assembly, communication equipment or electronic equipment.

[0100] Reference Figure 13 as well as Figure 14 The antenna 20 can be bonded or adhered to the transparent area 11 of the glass 10' using adhesive components such as OCA film (Optically Clear Adhesive Film). The lower housing 110 can be adjacent to the antenna 20 and can be bonded or adhered to the opaque area of ​​the glass 10' using adhesive components such as double-sided tape.

[0101] The substrate 30 may have one end connected to the antenna 20. A first portion 31a of the substrate 30 may be located within the glass 10' at the same level as the antenna 20, defining the aforementioned end of the substrate 30. A second portion 31b of the substrate 30 may be connected to the first portion 31a, covering a portion of the lateral side of the glass 10'. A third portion 31c of the substrate 30 may be connected to the second portion 31b, located on the glass 10' at the same level as the lower housing 110. A fourth portion 32 of the substrate 30 may be connected to the third portion 31c, and may be located via a first opening P1 (see reference). Figure 13 The fifth portion 33 of the substrate 30 can be connected to the fourth portion 32 and can be placed on the flat portion 111a of the base 111 (see reference). Figure 13 On. The plate 40 can be aligned with the flat surface 111a with the fifth part 33 as reference, and can be bonded or pasted to the substrate 30.

[0102] On the other hand, the second portion 31b of the substrate 30 can be referred to as the bent portion 31b of the substrate 30. The bent portion 31b can be formed raised outward toward the lateral side of the glass 10'. Thus, the bent portion 31b can smoothly connect the first portion 31a and the third portion 31c. In this case, compared to when the bent portion 31b is arranged at an angle between the first portion 31a and the third portion 31c instead of a straight portion, damage to the substrate 30 caused by bending can be minimized.

[0103] Connector 130 can be positioned opposite to the fifth part 33 with reference to board 40, and can be mounted on board 40 adjacent to the front wall 112. Multiple pins 130P, 130Q (see reference) Figure 16 After passing through plate 40 and the fifth part 33, it is soldered to the lower surface of substrate 30. Head 132 can extend from body 131 to the second opening P2 (see reference). Figure 13 )extend.

[0104] The upper housing 120 can face the plate 40 with the connector 130 as a reference. The plate 40 can contact the lower surface of the cover 121. The body 131 of the connector 130 can be connected via the first hole 122h1 of the receiving portion 122 (see reference). Figure 11 Afterwards, it is contained within the internal space 122S of the containment unit 122 (see reference). Figure 13 The head 132 of connector 130 can pass through the second hole 122h2 of receiving portion 122 (see reference). Figure 11 The second opening P2 of the lower housing 110. In addition, the stopper 122a is part of the receiving part 122 and can define part of the boundary of the second hole 122h2. One side of the connector 130 can be locked onto the lower end of the stopper 122a.

[0105] At this time, the front end of the upper housing 120 can be defined by the receiving portion 122 and can be locked onto the rear ends of the plurality of first portions 112a1, 112b1. The rear end of the upper housing 120 can be defined by the cover portion 121 and can be locked onto the front ends of the plurality of first portions 113a1, 113b1. That is, the lower housing 110 can restrict the front-back movement of the upper housing 120 located inside the lower housing 110.

[0106] Additionally, the right side of the upper housing 120 can be engaged with the inner surfaces of the plurality of second portions 112a2, 113a2 and the first sidewall 114a. The left side of the upper housing 120 can be engaged with the inner surfaces of the plurality of second portions 112b2, 113b2 and the second sidewall 114b. That is, the lower housing 110 can restrict the left and right movement of the upper housing 120 located inside the lower housing 110.

[0107] Additionally, the upper end of the receiving portion 122 can be engaged with the lower ends of the plurality of side hooks 114ah, 114bh. The upper end of the engaging portion 123 can be engaged with the lower end of the central hook 115h. That is, the lower housing 110 can restrict the vertical movement of the upper housing 120 located inside the lower housing 110.

[0108] Thus, the substrate 30, the plate 40, and the connector 130 can be positioned between the lower housing 110 and the upper housing 120 without wobbling.

[0109] Reference Figure 15 The connection module 100' may include housings 110' and 120', which are used in place of the reference. Figure 13 as well as Figure 14 The casings 110 and 120 are described.

[0110] The upper housing 120' may include a fifth portion 33 covering the substrate 30 and a cover portion 121' covering the plate 40, as well as a receiving portion 122' for receiving the connector 130.

[0111] At this time, the front end of the upper housing 120' can be defined by the receiving portion 122', and can be locked at the rear end of the plurality of first portions 122a1', 122b1' of the lower housing 110'. The rear end of the upper housing 120' can be defined by the cover portion 121', and the rear groove 121g' formed on the aforementioned rear end of the upper housing 120' can be locked at the front end of the first portion 113b1'. That is, the lower housing 110' can restrict the back-and-forth movement of the upper housing 120' located inside the lower housing 110'.

[0112] In addition, the left and right sides of the upper shell 120' can be locked onto the inner surfaces of the multiple walls 112a', 113a', and 114a' of the lower shell 110'. That is, the lower shell 110' can restrict the left and right movement of the upper shell 120' located inside the lower shell 110'.

[0113] Additionally, the upper end of the receiving portion 122' can be engaged with the lower ends of the plurality of side hooks 114ah' and 114bh'. The upper end of the cover portion 121' can be engaged with the lower end of the rear hook 113ah'. That is, the lower housing 110' can restrict the vertical movement of the upper housing 120' located inside the lower housing 110'.

[0114] Thus, the substrate 30, the plate 40, and the connector 130 can be positioned between the lower housing 110' and the upper housing 120' without wobbling.

[0115] Reference Figure 16Multiple pins 130P and 130Q can protrude from the lower surface of the connector body 131 into the hole 111h of the lower housing 110, and can penetrate the plate 40 and the substrate 30. Multiple holes 30Ph and 30Qh (refer to...) Figure 12 as well as Figure 15 The holes 111h and 111h can be aligned vertically. A portion of the substrate 30 overlapping with the plate 40 can be referred to as the flat portion 33. For example, the flat portion 33 can be the fifth portion 33 (see reference). Figure 13 A portion of the multiple pins 130P, 130Q may be located inside the hole 111h and may be separated upward from the upper surface of the glass 10, 10' (refer to the gap g1 between the multiple pins 130P, 130Q and the glass 10, 10').

[0116] Therefore, the connecting module 100 can be flatly mounted on the glass 10, 10' (on).

[0117] The substrate 30 may include a connecting portion 31, a curved portion 32, and a platform portion 33. For example, the connecting portion 31 may be a first portion to a third portion 31a, 31b, 31c (see reference). Figure 13 The curved surface 32 can be the fourth part 32 (see reference). Figure 13 Platform section 33 can be the fifth part 33 (refer to...) Figure 13 ).

[0118] At least a portion of the connecting portion 31 may be located on the glass 10, 10'. The platform portion 33 may overlap with the plate 40 and may be placed on the flat portion 111a. The curved portion 32 may connect the connecting portion 31 and the platform portion 33 and may be located on the round portion 111b of the lower housing 110.

[0119] The circular portion 111b may be part of the lower housing 110 that connects the first long side 111L1 and the planar portion 111a, and may be formed between the first rear wall 113a and the first side wall 114a (see reference). Figure 11 The length L10 of the circular portion 111b (refer to...) Figure 11 The width of the curved surface 32 (defined along the length of the circular portion 111b) can be the same as or larger than that of the curved surface 32. The surface of the circular portion 111b can be a curved surface. The surface of the circular portion 111b can be a raised curved surface with a certain radius of curvature R3. Alternatively, the surface of the circular portion 111b can be a concave curved surface with a certain radius of curvature. The curved surface 32 can be bent along the surface of the circular portion 111b and can be placed on the surface of the circular portion 111b.

[0120] Therefore, even if there is a height difference between the upper surface of the glass 10, 10' where the connecting portion 31 is located and the upper surface of the planar portion 111a where the platform portion 33 is located (refer to h1), the curved portion 32 can still smoothly connect the connecting portion 31 and the platform portion 33. In this case, compared with configuring a straight portion instead of a circular portion 111b, it is possible to minimize the damage to the substrate 30 caused by bending of the substrate 30.

[0121] On the other hand, antenna 20 may contain conductive materials such as copper, gold, and silver. Antenna 20 may include an antenna pattern in the form of a metal mesh. The metal mesh may be a grid arrangement of conductive materials such as copper and silver to realize the electrode pattern. The antenna pattern may be configured as a CPW (co-planar waveguide) structure. The CPW structure may be a structure in which the feeding line connected to the radiating pattern and the ground pattern are positioned separately on the same plane.

[0122] The antenna 20 may include a first layer 20M having an antenna pattern formed in the manner described above as a metal mesh, a second layer 20P of PET material protecting the upper surface of the first layer 20M, and an adhesive component 20Y bonded to the lower surface of the first layer 20M and the upper surface of the glass 10, 10'.

[0123] The substrate 30 may include a first substrate layer 30a and / or a second substrate layer 30b. The first substrate layer 30a may be formed on one side of the substrate 30, and the second substrate layer 30b may be formed on the other side of the substrate 30. The first substrate layer 30a and the second substrate layer 30b may be electrically connected vias.

[0124] Antenna 20 can be connected to cables C1 and C2 (see reference) via substrate 30 and multiple pins 130P and 130Q to connector 130 socket 134. Figure 8 Electrical connection (refer to) Figure 12 That is, vehicle 1 connected to cables C1 and C2 (refer to...) Figure 1 The structure can utilize antenna 20 for communication.

[0125] Figures 17 to 23 The figures are referenced in illustrating a flexible printed circuit board and an antenna assembly according to an embodiment of the present disclosure.

[0126] Reference Figure 17 as well as Figure 18 The antenna 20 can be disposed between the first glass 10 and the adhesive film 10Y. When the antenna 20 is disposed between the first glass 10 and the adhesive film 10Y, compared with when the antenna 20 is attached to the second glass 10a, the impact on the signals transmitted and received by the adhesive film 10Y through the antenna 20 can be minimized.

[0127] The first substrate layer 30a may include a first CPW pattern 330, a second CPW pattern 340, and a microstrip 350. The microstrip 350 may be named signal pattern 350, third feed pattern 350, etc.

[0128] The first CPW pattern 330 may include a first power supply pattern 331, a first grounding pattern 332, and a second grounding pattern 333 (see reference). Figure 19 as well as Figure 20 The first power supply pattern 331, the first grounding pattern, and the second grounding patterns 332 and 333 can be electrically isolated from each other. The first CPW pattern 330 can be formed on the connection portion 31.

[0129] The second CPW pattern 340 may include a second power supply pattern 341 and a third grounding pattern 342 (see reference). Figure 19 as well as Figure 20 The second power supply pattern 341 and the third grounding pattern 342 can be electrically isolated from each other. The third grounding pattern 342 can be formed to surround the second power supply pattern 341. The third grounding pattern 342 can be disposed on both sides of the second power supply pattern 341. The third grounding pattern 342 can be composed of multiple grounding patterns. The second CPW pattern 340 can be formed on the platform portion 33.

[0130] The microstrip line 350 enables electrical connection between the first feed pattern 331 of the first CPW pattern 330 and the second feed pattern 341 of the second CPW pattern 340. The microstrip line 350 can be formed at least in the connection portion 31. The microstrip line 350 can be formed in the connection portion 31, the curved portion 32, and the plateau portion 33.

[0131] The second substrate layer 30b may include a fourth ground pattern 320. The fourth ground pattern 320 may be formed at least on the connecting portion 31. The fourth ground pattern 320 may be formed on the connecting portion 31, the curved portion 32, and the platform portion 33.

[0132] The second substrate layer 30b can be formed on the other side of the substrate 30 facing the vehicle frame 9. The fourth ground pattern 320 is disposed on the second substrate layer 30b, thereby minimizing the impact of antenna impedance degradation on the substrate 30 caused by the vehicle frame 9, which is made of metal. That is, when only a CPW pattern is disposed on the first substrate layer 30a of the connection portion 31, there is a problem that the impact of the vehicle frame 9, etc., on the substrate 30 cannot be blocked. However, when a GCPW structure is formed in the connection portion 31, that is, when a CPW pattern is disposed on the first substrate layer 30a of the connection portion 31 and a ground pattern 320 is disposed on the second substrate layer 30b, the impact of the vehicle frame 9, etc., on the substrate 30 can be blocked. It should be noted that in order to form a GCPW structure, the width of the feed pattern needs to be very small, which presents a problem of difficulty in mass production. Therefore, according to one embodiment, the connection portion 31 can be formed as a microstrip line structure. On the other hand, the following... Figures 17 to 27 The following explanation uses the connection portion 31 as an example of a microstrip line structure, but it is not limited to this. For example, the connection portion 31 can be formed as a GCPW structure. Below, in... Figures 28 to 51 In this example, the connecting part 31 is formed as a GCPW structure.

[0133] The first ground pattern 332 and the second ground pattern 333 of the first CPW pattern 330 can be electrically connected to the fourth ground pattern 320. The fourth ground pattern 320 can be electrically connected to the first ground pattern 332 and the second ground pattern 333 of the first CPW pattern 330 through at least one first via 311.

[0134] The fourth ground pattern 320 can be electrically connected to the third ground pattern 342 of the second CPW pattern 340. The fourth ground pattern 320 can be electrically connected to the third ground pattern 342 of the second CPW pattern 340 through at least one second via 312.

[0135] The signal pin 130Q of the connector 130, which passes through the signal pin hole 30Qh, and the ground pin 130P, which passes through the ground pin hole 30Ph, can be electrically connected to the other side of the substrate 30. The signal pin 130Q and the ground pin 130P can be electrically connected to the other side of the substrate 30 by soldering. The signal pin 130Q can be electrically connected to the second feed pattern 341 of the second CPW pattern 340. The ground pin 130P can be electrically connected to the third ground pattern 342 of the second CPW pattern 340.

[0136] The substrate 30 may be composed of a first substrate portion for forming a first CPW pattern 330, a second substrate portion for forming a second CPW pattern 340, and a third substrate portion for forming a microstrip line 350 and a fourth ground pattern 320.

[0137] Reference Figure 19 as well as Figure 20 One end 301 of the first CPW pattern 330 of the first substrate layer 30a can be connected to the antenna 20. The first CPW pattern 330 can be connected to the antenna 20 using a low-temperature bonding method. One end of the first feed pattern 331 of the first CPW pattern 330 can be connected to the feed line of the antenna pattern of the antenna 20. One end of the first ground pattern 332 and one end of the second ground pattern 333 of the first CPW pattern 330 can be respectively connected to the ground pattern of the antenna pattern of the antenna 20.

[0138] The first CPW pattern 330 may include at least one slot pattern. The slot pattern may represent a pattern formed by a portion of the edge of the ground pattern being recessed inward. The larger the area of ​​the slot pattern, the smaller the area of ​​the ground pattern can become. The slot pattern may be formed at predetermined locations and in predetermined shapes to improve antenna efficiency.

[0139] The first CPW pattern 330 may include a first slot pattern 3321 formed by a portion of the edge of the first ground pattern 332 recessed inward. The first slot pattern 3321 may be formed by a portion of the edge of the first ground pattern 332 adjacent to the antenna pattern of the antenna 20 recessed along the -x-axis direction. The first slot pattern 3321 may be formed in a quadrilateral shape.

[0140] The first CPW pattern 330 may include a second slot pattern 3322 formed by indenting a portion of the edge of the second ground pattern 333 inward. The second slot pattern 3322 may be formed by indenting a portion of the edge adjacent to the first feed pattern 331 along the -z axis direction. The second slot pattern 3322 may be formed in a fan shape.

[0141] The other end 3301 of the first ground pattern of the first CPW pattern 330 and the second ground patterns 332 and 333 can overlap with one end 3201 of the fourth ground pattern 320 of the second substrate layer 30b in a predetermined region 302. The other end 3301 of the first ground pattern and the second ground patterns 332 and 333 can be electrically connected to one end 3201 of the fourth ground pattern 320 through at least one second via 312.

[0142] The third ground pattern 342 of the second CPW pattern 340 of the first substrate layer 30a may overlap with the other end 3202 of the fourth ground pattern 320 of the second substrate layer 30b in a predetermined region 303. The other end 3202 of the fourth ground pattern 320 may be formed in a shape corresponding to the third ground pattern 342. The other end 3202 of the fourth ground pattern 320 may have a first slot 323 with the pattern removed corresponding to the shape of the second feed pattern 341 of the second CPW pattern 340. The area of ​​the first slot 323 may be larger than the area of ​​the second feed pattern 341.

[0143] One end of the microstrip line 350 of the first substrate layer 30a can be connected to the first feed pattern 331 of the first CPW pattern 330. The other end of the microstrip line 350 can be connected to the second feed pattern 341 of the second CPW pattern 340.

[0144] The microstrip line 350 may include a first line portion 351, a second line portion 352, a third line portion 353, and / or an end portion 354. The end portion 354 of the microstrip line 350 may correspond to the other end of the microstrip line 350.

[0145] The other end 3202 of the fourth grounding pattern 320 may have a second slot 324 with the pattern removed corresponding to the shape of the end 354 of the microstrip line 350. The area of ​​the second slot 324 may be larger than the area of ​​the end 354 of the microstrip line 350.

[0146] Reference Figure 21 as well as Figure 22 The first width w1 of the first feed pattern 331 of the first CPW pattern 330 and the first interval s1 between the first feed pattern 331 and the first ground pattern and the second ground patterns 332 and 333 can each have values ​​corresponding to impedance matching with the antenna pattern. In this disclosure, the antenna impedance of the antenna pattern is taken as an example of 50Ω.

[0147] Based on the first feeding pattern 331 disposed between the first glass 10 and the adhesive film 10Y, the first width w1 and the first interval s1 can respectively have values ​​corresponding to the dielectric constant εr and thickness of the first glass 10 and the dielectric constant εr and thickness of at least one of the adhesive film 10Y and the second glass 10a.

[0148] The second width w2 at one end of the microstrip line 350 can be smaller than the first width w1 of the first feed pattern 331. The second width w2 at one end of the microstrip line 350 can have values ​​corresponding to the impedance matching of the antenna pattern. The second width w2 of the microstrip line 350 can have values ​​corresponding to the dielectric constant εr and thickness of the substrate 30.

[0149] The width of the remaining portion of the microstrip line 350, excluding the end 354 which connects to the second feed pattern 341 of the second CPW pattern 340, can be a constant second width w2. The end 354 of the microstrip line 350 can be disposed on the platform portion 33. The remaining portion of the microstrip line 350, excluding the end 354, can be disposed at least on the connecting portion 31.

[0150] The width w12 of the other end 3311 of the first feed pattern 331 can be smaller than the first width w1 and larger than the second width w2. The width w12 of the other end 3311 of the first feed pattern 331 can gradually decrease as it approaches one end of the microstrip line 350. The other end 3311 of the first feed pattern 331 can be formed into a triangular shape. Therefore, in terms of signal transmission between the CPW structure and the microstrip line structure, the feed loss for the broadband antenna 20 can be reduced.

[0151] The first length L1 of the other end 3311 of the first feed pattern 331 can correspond to the first width w1. For example, the first length L1 of the other end 3311 of the first feed pattern 331 can have a value that is a certain proportion (e.g., 1.5 times) larger than the first width w1.

[0152] The second interval s2 between the other end 3311 of the first power supply pattern 331 and the first grounding pattern and the second grounding patterns 332 and 333 can be smaller than the first interval s1.

[0153] One end 3201 of the fourth ground pattern 320 may include a third slot pattern 322 corresponding to the shape of the other end 3311 of the first feed pattern 331. The third slot pattern 322 may be formed by indenting a portion of the edge of one end 3201 of the fourth ground pattern 320 inward. By forming the third slot pattern 322, it is possible to prevent one end 3201 of the fourth ground pattern 320 from overlapping with the other end 3311 of the first feed pattern 331. That is, the third slot pattern 322 may be an element for reducing feed loss for the antenna 20 operating in broadband.

[0154] On the other hand, the third width w3 of the second feed pattern 341 of the second CPW pattern 340 and the third interval s3 between the second feed pattern 341 and the third ground pattern 342 can each have values ​​corresponding to impedance matching with the antenna pattern. Based on the second CPW pattern 340 being disposed between the planar portion 111a of the lower housing 110 and the plate 40, the third width w3 and the third interval s3 can correspond to the dielectric constant εr and thickness of each of the plate 40 and the lower housing 110.

[0155] The third width w3 of the second feed pattern 341 of the second CPW pattern 340 can be smaller than the first width w1 of the first feed pattern 331 of the first CPW pattern 330. The third interval s3 between the second feed pattern 341 and the third grounding pattern 342 can be smaller than the first interval s1 between the first feed pattern 331 and the first grounding pattern and the second grounding patterns 332 and 333.

[0156] The width w4 of the third line portion 353 connected to the end 354 of the microstrip line 350 can be equivalent to the second width w2. The width w34 of the other end 354 of the microstrip line 350 can be smaller than the third width w3 and larger than the fourth width w4. The width w34 of the other end 354 of the microstrip line 350 can gradually increase as it approaches the second feed pattern 341. The other end 354 of the microstrip line 350 can be formed into a triangular shape. Thus, in terms of signal transmission between the CPW structure and the microstrip line structure, the feed loss of the antenna 20 operating in broadband can be reduced.

[0157] The length L2 of the end 354 of the microstrip line 350 can correspond to the third width w3. For example, the length L2 of the end 354 of the microstrip line 350 can have a value that is a certain proportion (e.g., 1.2 times) larger than the first width w1.

[0158] Reference Figure 19 , Figure 20 as well as Figure 23 The substrate 30 can be formed in a shape such that, when the substrate 30 is configured such that the curved portion 31b is raised outward toward the side of the glass 10', it will not overlap with the first feed pattern 331 of the connection portion 31. That is, the platform portion 33 of the substrate 30 can be formed to eliminate the overlapping area 3211 that overlaps with the first feed pattern 331 of the connection portion 31. The fourth ground pattern 320 of the second substrate layer 30b will not overlap with the first feed pattern 331, thus preventing a decrease in the radiation performance of the antenna 20 operating in broadband mode and improving antenna efficiency.

[0159] On the other hand, the first line portion 351 of the microstrip line 350 can extend along the x-axis from one end of the microstrip line 350 by a length that avoids the overlapping region 3211. The second line portion 352 can extend from the end of the first line portion 351 along the +z-axis by a predetermined angle that avoids the overlapping region 3211. The third line portion 353 can extend along the x-axis from the end of the second line portion 352 by a length corresponding to the position of the second feed pattern 341 of the second CPW pattern 340. The end of the third line portion 353 can be connected to the end 354 of the microstrip line 350.

[0160] Figures 24 to 27 The figures are referenced in illustrating a flexible printed circuit board and antenna assembly according to another embodiment of this disclosure. For comparison with... Figures 17 to 23 The content that is repeated in the description is omitted in detail.

[0161] Reference Figure 24 as well as Figure 25The antenna 20 can be disposed between the second glass 10a and the adhesive film 10Y. When the antenna 20 is disposed between the second glass 10a and the adhesive film 10Y, the adhesive film 10Y, which has strong UV resistance, can minimize the impact of ultraviolet rays or heat on the antenna 20.

[0162] The first substrate layer 30'a may include a second CPW pattern 340' and a microstrip 350'.

[0163] The second substrate layer 30'b may include a first CPW pattern 330' and a fourth ground pattern 320'. The fourth ground pattern 320' may be formed at least on the connecting portion 31. The fourth ground pattern 320' may be formed on the connecting portion 31, the curved portion 32, and the platform portion 33.

[0164] The microstrip line 350' can realize the electrical connection between the first feed pattern 331' of the first CPW pattern 330' and the second feed pattern 341' of the second CPW pattern 340'. The microstrip line 350' can be electrically connected to the first feed pattern 331' of the first CPW pattern 330' through at least one third via 313.

[0165] The first grounding pattern 332' and the second grounding pattern 333' of the first CPW pattern 330' can be electrically connected to the fourth grounding pattern 320'. The first power supply pattern 331' can be electrically isolated from the first grounding pattern and the second grounding patterns 332' and 333'.

[0166] Reference Figure 26 as well as Figure 27 One end 301' of the first CPW pattern 330' of the second substrate layer 30'b can be connected to the antenna 20. One end of the first feed pattern 331' of the first CPW pattern 330' can be connected to the feed line of the antenna pattern of the antenna 20. One end of the first ground pattern 332' and one end of the second ground pattern 333' of the first CPW pattern 330' can be connected to the ground pattern of the antenna pattern of the antenna 20, respectively.

[0167] The first CPW pattern 330' may include at least one slot pattern. The first CPW pattern 330' may include a first slot pattern 3321' formed by an inward indentation of a portion of the edge of the first ground pattern 332'. The first CPW pattern 330' may include a second slot pattern 3322' formed by an inward indentation of a portion of the edge of the second ground pattern 333'.

[0168] One end 302' of the microstrip line 350' of the first substrate layer 30'a can be connected to the first line portion 351' of the microstrip line 350. One end 302' of the microstrip line 350' of the first substrate layer 30'a can overlap with at least a portion of the other end 3311' of the first feed pattern 331' of the first CPW pattern 330' of the second substrate layer 30'b in a predetermined region 302'. The other end 3311' of the first feed pattern 331' can be electrically connected to one end 302' of the microstrip line 350' through at least one third via 313.

[0169] The first width w1 of the first feed pattern 331' of the first CPW pattern 330' and the first interval s1 between the first feed pattern 331' and the first ground pattern and the second ground patterns 332', 333' can each have a value corresponding to the impedance matching with the antenna pattern.

[0170] Based on the first feeding pattern 331' disposed between the second glass 10a and the adhesive film 10Y, the first width w1 and the first interval s1 can respectively have values ​​corresponding to the dielectric constant εr and thickness of the second glass 10a and the dielectric constant εr and thickness of at least one of the adhesive film 10Y and the first glass 10.

[0171] Figures 28 to 39 The figures are referenced in illustrating a flexible printed circuit board and antenna assembly according to yet another embodiment of this disclosure. For comparison with... Figures 17 to 27 The content that is repeated in the description is omitted in detail.

[0172] Reference Figures 28 to 29b Antenna 20 can be configured between the second glass 10a and the adhesive film 10Y.

[0173] The first substrate layer 30''a may include a third CPW pattern 360.

[0174] The second substrate layer 30''b may include a first CPW pattern 330'', a fourth ground pattern 320'', and a second CPW pattern 340''. The fourth ground pattern 320'' may be formed at least in the connection portion 31. For example, the third CPW pattern 340'' may be soldered to an RF cable.

[0175] One end 301'' of the first CPW pattern 330'' of the second substrate layer 30''b can be connected to the antenna 20. One end of the first feed pattern 331'' of the first CPW pattern 330'' can be connected to the feed line of the antenna pattern of the antenna 20. One end of the first ground pattern 332'' and one end of the second ground pattern 333'' of the first CPW pattern 330'' can be connected to the ground pattern of the antenna pattern of the antenna 20, respectively.

[0176] The third power supply pattern 361 of the third CPW pattern 360 can realize the electrical connection between the first power supply pattern 331'' of the first CPW pattern 330'' and the second power supply pattern 341'' of the second CPW pattern 340''.

[0177] The third feed pattern 361 of the third CPW pattern 360 and the first feed pattern 331'' of the first CPW pattern 330'' can overlap in a predetermined area 302''. The third feed pattern 361 of the third CPW pattern 360 can be electrically connected to the first feed pattern 331'' of the first CPW pattern 330'' through at least one third via 313.

[0178] The third feed pattern 361 of the third CPW pattern 360 and the second feed pattern 341'' of the second CPW pattern 340'' can overlap in a predetermined area 303''. The third feed pattern 361 can be electrically connected to the second feed pattern 341'' of the second CPW pattern 340'' through at least one fourth via 314.

[0179] The first grounding pattern 332'' and the second grounding pattern 333'' of the first CPW pattern 330'' can be electrically connected to the fourth grounding pattern 320''. The first power supply pattern 331'', the first grounding pattern, and the second grounding patterns 332'' and 333'' can be electrically isolated from each other.

[0180] The third grounding pattern 342'' of the second CPW pattern 340'' can be electrically connected to the fourth grounding pattern 320''. The second power supply pattern 341'' and the third grounding pattern 342'' can be electrically isolated from each other.

[0181] The fourth CPW pattern 360 and the fourth grounding pattern 320'' can form the pattern of a GCPW (grounded co-planar waveguide) structure. The GCPW structure can be a structure in which the third feed pattern 361 and the fifth grounding pattern 362 are separated from each other and located on one side, and the grounding pattern 320'' is located on the other side.

[0182] Reference Figure 30 Reference numeral 3001 indicates that a third CPW pattern 360 may be formed in the first substrate layer 30''a. The third CPW pattern 360 may include a third power supply pattern 361 and a fifth grounding pattern 362.

[0183] The third feed pattern 361 may include one end 3611 overlapping with the first feed pattern 331'' of the first CPW pattern 330'', another end 3612 overlapping with the second feed pattern 341'' of the second CPW pattern 340'', a first line portion 3613 extending from one end 3611 along the -x axis direction, a second line portion 3614 extending from the end of the first line portion 3613 after being bent at a predetermined angle along the +z axis direction, a third line portion 3615 extending from the end of the second line portion 3614 along the -x axis direction, a fourth line portion 3616 extending from the end of the third line portion 3615 along the -x axis direction, and / or a fifth line portion 3617 connecting the end of the fourth line portion 3616 and the other end 3612.

[0184] The first line portion 3613 and the second line portion 3614 can be formed on the first portion 31a of the connection portion 31 of the substrate 30 (see reference). Figure 13 The first line portion 3613 and the second line portion 3614 can be named the first power supply portion. The third line portion 3615 can be formed in the second portion 31b of the connection portion 31 of the substrate 30 (see reference). Figure 13 The third line portion 3615 can be named the second power supply portion. The fourth line portion 3616 and the fifth line portion 3617 can be formed in the third portion 31c of the connection portion 31 of the substrate 30 (see reference). Figure 13 The fourth line section 3616 and the fifth line section 3617 can be named the third power supply section.

[0185] The fifth line portion 3617 can be formed into a bent shape to connect the end of the fourth line portion 3616 to the other end 3612.

[0186] Reference Figure 30 Reference numeral 3002 indicates that a first CPW pattern 330'', a fourth ground pattern 320'', and a second CPW pattern 340'' can be formed on the second substrate layer 30''b.

[0187] The first power supply pattern 331'' of the first CPW pattern 330'' may include an end 3311'' that overlaps with an end 3611 of the third power supply pattern 361. The first grounding pattern 332'' and the second grounding pattern 333'' of the first CPW pattern 330'' may be connected to the fourth grounding pattern 320''.

[0188] The second feed pattern 341'' of the second CPW pattern 340'' can overlap with the other end 3612 of the third feed pattern 361. The third ground pattern 342'' of the second CPW pattern 340'' can be connected to the fourth ground pattern 320''.

[0189] The fourth ground pattern 320'' can be electrically connected to the fifth ground pattern 362 of the third CPW pattern 360. For example, the fourth ground pattern 320'' and the fifth ground pattern 362 of the third CPW pattern 360 can be electrically connected to each other through at least one via.

[0190] Reference Figure 31 When the substrate 30 is bent and configured such that the second portion 31b of the substrate 30 protrudes outward toward the side of the glass 10', the first portion 31a and the third portion 31c of the substrate 30 can overlap each other. In this case, the angle formed by the orthographic projection of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be a predetermined angle Θ1. This predetermined angle Θ1 can correspond to the angle at which the second line portion 3614 bends in the +z-axis direction from the end of the first line portion 3613 when the second line portion 3614 extends from the end of the first line portion 3613.

[0191] The interval in the z-axis direction between the orthographic projections of the second line portion 3614 and the fourth line portion 3616 can gradually increase as one moves away from the third line portion 3615. For example, the interval in the z-axis direction between the orthographic projections of the second line portion 3614 and the fourth line portion 3616 can gradually increase to d11, d12, and d13 as one moves away from the third line portion 3615.

[0192] On the other hand, the z-axis distance between the orthographic projection of the first portion 31a of the fifth line portion 3617 and the first line portion 3613 can be greater than the z-axis distance between the orthographic projections of the second line portion 3614 and the fourth line portion 3616. For example, the z-axis distance between the orthographic projection of the fifth line portion 3617 and the first line portion 3613 can gradually increase as one moves away from the third line portion 3615.

[0193] Reference Figure 32 When a signal is transmitted through the third feed pattern 361 of the third CPW pattern 360, an electric field (E-field) can be formed along the connection portion 31 of the substrate 30. At this time, when the third feed pattern 361 of the third CPW pattern 360 extends and forms along the x-axis direction, it is possible that no interference will occur between the third feed patterns 361 when the substrate 30 is unfolded.

[0194] On the other hand, refer to Figure 33When the third feed pattern 361 of the third CPW pattern 360 extends along the x-axis direction, and the substrate 30 is bent and configured such that the second portion 31b of the substrate 30 protrudes outward toward the side of the glass 10', a portion 361a of the third feed pattern 361 formed on the first portion 31a of the substrate 30 and another portion 361c of the third feed pattern 361 formed on the third portion 31c can overlap each other. At this time, due to the interference of the electric field generated between the portion 361a and the other portion 361c of the third feed pattern 361, feed loss may occur.

[0195] Reference Figure 34 The attached figure 3401 can be compared with, for example, Figure 32 The insertion loss G3410 and as shown in the unfolded state of the substrate 30 Figure 33 The insertion loss G3420 is shown in the state of the bent substrate 30. At this time, the insertion loss G3410 in the state of the unfolded substrate 30 is closer to 0dB than the insertion loss G3420 in the state of the bent substrate 30. Therefore, it can be concluded that the electric field interference generated between part 361a and part 361c of the third feed pattern 361 has an adverse effect on the insertion loss.

[0196] Reference Figure 34 The attached figure 3402 can be compared with, for example, Figure 32 The reflection loss G3430 in the unfolded state of the substrate 30 shown and as Figure 33 The reflection loss G3440 is shown in the state of the bent substrate 30. At this time, the reflection loss G3430 in the state of the unfolded substrate 30 is further away from 0dB than the reflection loss G3440 in the state of the bent substrate 30. Therefore, it can be seen that the electric field interference generated between part 361a and part 361c of the third feeding pattern 361 also has an adverse effect on the reflection loss.

[0197] On the other hand, refer to Figure 35 When the third feed pattern 361 is formed such that the orthographic projections of the first portion 31a of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c form a predetermined angle Θ1, even if the substrate 30 is bent, the area of ​​overlap between the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be minimized. At this time, even when the substrate 30 is bent, the feed loss caused by electric field interference generated between the second line portion 3614 and the fourth line portion 3616 can be minimized.

[0198] Reference Figure 36 The attached reference numeral 3601 can be used for, for example Figure 33The insertion loss 3420 and the insertion loss 3420 when the bent substrate 30 overlaps with the third feed pattern 361 are shown. Figure 35 The insertion loss G3610 is achieved when the overlap with the third feed pattern 361 is minimized in the bent substrate 30 state shown. At this time, the insertion loss G3610 when the overlap with the third feed pattern 361 is minimized is closer to 0dB than the insertion loss 3420 when the overlap with the third feed pattern 361 is achieved, so it can be seen that the insertion loss has been improved.

[0199] Reference Figure 36 The attached reference numeral 3602 can be used for, for example Figure 33 The reflection loss 3440 and the reflection loss 361 when the bent substrate 30 overlaps with the third feed pattern 361 are shown. Figure 35 The reflection loss G3630 is achieved when the overlap with the third feed pattern 361 is minimized in the bent substrate 30 state shown. At this time, the reflection loss G3630 when the overlap with the third feed pattern 361 is minimized is further away from 0dB than the reflection loss 3440 when the overlap with the third feed pattern 361 is achieved, so it can be seen that the reflection loss has been improved.

[0200] On the other hand, refer to Figure 37 When the substrate 30 is bent and configured such that the second part 31b of the substrate 30 protrudes outward toward the side of the glass 10', the less the area where a part 361a of the third feed pattern 361 overlaps with another part 361c, the smaller the feed loss caused by electric field interference.

[0201] For example, when the length of the region where a portion 361a of the third feed pattern 361 overlaps with another portion 361c is L1, the feed loss is greater compared to when the length of the region where a portion 361a of the third feed pattern 361 overlaps with another portion 361c is L2.

[0202] Reference Figure 38 The attached reference numeral 3801 can be used for, for example Figure 37 The insertion loss G3810 in the third feed pattern 361 with an overlapping region length of L1, as shown by reference numeral 3701, and the insertion loss G3820 in the third feed pattern 361 with an overlapping region length of L2, as shown by reference numeral numeral 3702, are shown. In this case, the insertion loss G3820 with an overlapping region length of L2 in the third feed pattern 361 is closer to 0 dB than the insertion loss G3810 with an overlapping region length of L1. Therefore, it can be concluded that the shorter the length of the overlapping region in the feed pattern 361, the smaller the impact of electric field interference on the insertion loss.

[0203] Reference Figure 38The attached reference numeral 3802 can be used for, for example Figure 37 The reference numeral 3701 shows the reflection loss G3830 when the length of the overlapping region in the third feed pattern 361 is L1, and the reference numeral 3702 shows the reflection loss G3840 when the length of the overlapping region in the third feed pattern 361 is L2. In this case, the reflection loss G3840 when the length of the overlapping region in the third feed pattern 361 is L2 is further away from 0 dB than the reflection loss G3830 when the length of the overlapping region in the third feed pattern 361 is L1. Therefore, it can be concluded that the shorter the length of the overlapping region in the feed pattern 361, the smaller the impact of electric field interference on the reflection loss.

[0204] At this point, the maximum length of the overlapping region between part 361a and part 361c of the third feed pattern 361 used to reduce feed loss can correspond to the frequency used for communication via antenna 20. For example, the maximum length of the overlapping region in the third feed pattern 361 can be determined based on the following mathematical formula 1.

[0205]

Mathematical Formula 1

[0206] Where 'a' represents the width 'w' of the third feed pattern 361, and 'b' represents the interval between the third feed pattern 361 and the fifth ground pattern 362, i.e., it can be the sum of the width 'w' of the third feed pattern 361 and the interval 's' between the third feed pattern 361 and the fifth ground pattern 362. For example, when the width 'w' of the third feed pattern 361 is 0.3 mm, the interval 's' between the third feed pattern 361 and the fifth ground pattern 362 is 0.6 mm, the dielectric constant 'εr' of the second glass 10a is 6.5, the thickness of the substrate 30 is 0.2 mm, and the frequency is 6 GHz, the impedance can be calculated to be 50 Ω, the effective dielectric constant 'εeff' to be 4.8, and the waveguide wavelength 'λg' to be 22.8 mm. In this case, the maximum length of the overlapping region in the third feed pattern 361 can be calculated to be λg / 4, i.e., 5.7 mm.

[0207] On the other hand, refer to Figure 39To minimize power supply losses, in addition to minimizing the length of the overlapping region in the third power supply pattern 361, it is also necessary to minimize the overall length of the third power supply pattern 361. Therefore, the first line portion 3613, the third line portion 3615, etc., of the third power supply pattern 361 can be configured as straight lines in the x-axis direction. Furthermore, the angle formed by the orthographic projection of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be determined based on the length of the overlapping region in the third power supply pattern 361. For example, the angle formed by the orthographic projection of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be determined based on the following mathematical formula 2.

[0208]

Mathematical Formula 2

[0209] Where L can be the length of the overlapping area in the third feed pattern 361, w is the width w of the third feed pattern 361, and s is the interval s between the third feed pattern 361 and the fifth grounding pattern 362.

[0210] For example, when the width w of the third feed pattern 361, as shown by reference numeral 3901, is 0.3 mm, the interval s between the third feed pattern 361 and the fifth grounding pattern 362 is 0.6 mm, and the length L11 of the overlapping area in the third feed pattern 361 is 5.7 mm, the angle Θ11 formed by the orthographic projection of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be 9°. In this case, the third feed pattern 361 may also include a sixth line portion 3618 connecting the first line portion 3613 and the second line portion 3614.

[0211] For example, when the width w of the third feed pattern 361, as shown by reference numeral 3902, is 0.3 mm, the interval s between the third feed pattern 361 and the fifth grounding pattern 362 is 0.6 mm, and the length L11 of the overlapping area in the third feed pattern 361 is 1.6 mm, the angle Θ12 formed by the orthographic projection of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be 30°. In this case, when the angle formed by the orthographic projection of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c exceeds 30°, the feed loss can also increase as the overall length of the third feed pattern 361 increases.

[0212] Therefore, the angle formed by the orthographic projection of the first portion 31a of the second line portion 3614 formed in the first portion 31a and the fourth line portion 3616 formed in the third portion 31c can be determined within a predetermined angle region, wherein the predetermined angle region is determined based on a first angle corresponding to the maximum length of the region overlapping in the third feed pattern 361 and a second angle corresponding to the increase in the overall length of the third feed pattern 361.

[0213] On the other hand, the length Lm of the fourth line portion 3616 formed in the third part 31c can correspond to the width of the area corresponding to the seal 13 and / or the frame 9.

[0214] Figures 40 to 51 The figures are referenced in illustrating a flexible printed circuit board and antenna assembly according to yet another embodiment of the present disclosure.

[0215] Reference Figure 40 as well as Figure 41 A region 10ae on the side of the second glass 10a adjacent to the frame 9 of the vehicle 1 can be located inside the second glass 10a in a manner that does not overlap with the groove 9g of the frame 9. In this case, the remaining region on the side of the second glass 10a, excluding region 10ae, can overlap with the groove 9g of the frame 9. A sealant 7 can be filled between the predetermined region 10am of the second glass 10a corresponding to the remaining region on the side of the second glass 10a, excluding region 10ae, and the groove 9g of the frame 9.

[0216] The shape of the adhesive film 10Y can correspond to the shape of the second glass 10a. A region 10Ye in the side of the adhesive film 10Y adjacent to the frame 9 of the vehicle 1 can be located inside the adhesive film 10Y in a manner that does not overlap with the groove 9g of the frame 9. At this time, the remaining region in the side of the adhesive film 10Y, except for the region 10Ye, can overlap with the groove 9g of the frame 9. A predetermined region 10Ym of the adhesive film 10Y corresponding to the remaining region in the side of the adhesive film 10Y, except for the region 10Ye, can overlap with a predetermined region 10am of the second glass 10a.

[0217] The bent portion 31b of the connecting portion 31 of the substrate 30 can be formed to protrude outward toward a region 10ae on the side of the second glass 10a. In this case, the region 10ae on the side of the second glass 10a is located inside the second glass 10a in a manner that does not overlap with the groove 9g of the frame 9, thereby significantly reducing the impact of the deterioration of the antenna impedance of the vehicle 1 frame 9, which is made of metal, on the substrate 30.

[0218] Antenna 20 can be positioned between the second glass 10a and the adhesive film 10Y in a manner corresponding to the transparent region 11. Sub-antenna 21 can be connected to antenna 20. Sub-antenna 21 can be positioned between the second glass 10a and the adhesive film 10Y in a manner corresponding to the transparent region 11. Sub-antenna 21 can be connected to substrate 30. Antenna 20 connected to sub-antenna 21 can be designated as main antenna.

[0219] Reference Figure 42 as well as Figure 43 The first auxiliary antenna 21a can be connected to the first main antenna 20a. The second auxiliary antenna 21b can be connected to the second main antenna 20b.

[0220] The secondary antenna 21 can be transparent. The secondary antenna 21 can be formed by creating an antenna pattern on a transparent substrate. The secondary antenna 21 can be flexible.

[0221] The secondary antenna 21 may include a secondary feed line connected to the main feed line of the antenna pattern of the main antenna 20. The secondary antenna 21 may include a secondary ground pattern connected to the main ground pattern of the antenna pattern of the main antenna 20. The secondary feed line of the secondary antenna 21 may be electrically isolated from the secondary ground pattern of the secondary antenna 21.

[0222] The shape of the secondary antenna 21 may correspond to the shape of the first CPW patterns 330, 330'. For example, the shape of the secondary feed line of the secondary antenna 21 may correspond to the shape of the first feed pattern 331, 331' of the first CPW patterns 330, 330'. For example, the shape of the secondary ground line of the secondary antenna 21 may correspond to the shape of the second ground pattern 332, 332' and / or the third ground pattern 333, 333' of the first CPW patterns 330, 330'. On the other hand, the secondary antenna 21 may include at least one slot pattern contained in the first CPW patterns 330, 330'.

[0223] The secondary antenna 21 can be connected to the substrate 30 in the opaque region 12. One end of the secondary antenna 21 can overlap with one end of the substrate 30 in a predetermined region 43 of the opaque region 12.

[0224] The main antenna 20 can transmit and receive signals in the first frequency band. The secondary antenna 21 can transmit and receive signals in the second frequency band. For example, the first frequency band can be from 0.6 GHz to 4.5 GHz, and the second frequency band can be from 5 GHz to 6 GHz.

[0225] Reference Figure 44The 0.6 GHz signal can be transmitted or received through the first signal area A20 corresponding to the main antenna 20 (4401). Additionally, the 1.9 GHz and 2.7 GHz signals can also be transmitted or received through the first signal area A20 corresponding to the main antenna 20 (4402, 4403). On the other hand, the 5 GHz signal can be transmitted or received through the second signal area A21 corresponding to the sub-antenna 21 (4404).

[0226] On the other hand, the transparency of the main antenna 20 and the secondary antenna 21 can be different. The sheet resistance of the main antenna 20 and the secondary antenna 21 can also be different. For example, the transparency of the secondary antenna 21 can be lower than that of the main antenna 20, and the sheet resistance of the secondary antenna 21 can be lower than that of the main antenna 20.

[0227] Reference Figure 45 According to reference numeral 4501 in the attached figure, the S-parameter characteristics can be similar when the sub-antenna 21 is formed on the substrate 30 (G4510), when the surface resistivity of the sub-antenna 21 is 0.05Ω (G4520), when the surface resistivity of the sub-antenna 21 is 0.15Ω (G4530), and when the surface resistivity of the sub-antenna 21 is 0.5Ω (G4540). That is, the S-parameter characteristics can be maintained even if the transparency and surface resistivity of the sub-antenna 21 are different.

[0228] On the other hand, refer to Figure 45 Reference numeral 4502 in the attached figure allows for comparison of the antenna efficiency based on the surface resistance of the sub-antenna 21. The antenna efficiency can be expressed in decibels (dB) corresponding to the antenna gain.

[0229] When the sub-antenna 21 is formed on the substrate 30 (G4510), and when the surface resistance of the sub-antenna 21 is 0.05Ω (G4520) and 0.15Ω (G4530), the antenna efficiency can meet the target value of -3dB. However, when the surface resistance of the sub-antenna 21 is 0.5Ω (G4540), the antenna efficiency may not meet the target value of -3dB in frequency bands above 5GHz. Therefore, the sub-antenna 21 can be configured to have a surface resistance of 0.15Ω or less. For example, the main antenna 20 can have a surface resistance of 0.5Ω or less, and the sub-antenna 21 can have a surface resistance of 0.15Ω or less.

[0230] Figures 46 to 51 These figures are referenced in illustrating various embodiments of the substrate according to this disclosure. For those relating to... Figures 28 to 39 The content that is repeated in the description is omitted in detail.

[0231] Reference Figure 46The first substrate layer 300a may include a third CPW pattern 3600.

[0232] The second substrate layer 300b may include a first CPW pattern 3300, a fourth ground pattern 3200, and a second CPW pattern 3400. The fourth ground pattern 3200 may be formed at least on the connection portion 31.

[0233] The first CPW pattern 3300 of the second substrate layer 300b can be connected to the sub-antenna 21 in a predetermined region 43 of the opaque region 12. One end of the first feed pattern 3310 of the first CPW pattern 3300 can be connected to the sub-feed line of the antenna pattern of the sub-antenna 21. One end of the first ground pattern 3320 and one end of the second ground pattern 3330 of the first CPW pattern 3300 can be connected to the sub-ground pattern of the antenna pattern of the sub-antenna 21, respectively.

[0234] The third power supply pattern 3610 of the third CPW pattern 3600 can realize the electrical connection between the first power supply pattern 3310 of the first CPW pattern 3300 and the second power supply pattern 3410 of the second CPW pattern 3400.

[0235] The third feed pattern 3610 of the third CPW pattern 3600 and the first feed pattern 3310 of the first CPW pattern 3300 may overlap in a predetermined area 3020. The third feed pattern 3610 of the third CPW pattern 3600 may be electrically connected to the first feed pattern 331 of the first CPW pattern 3300 through at least one third via 313.

[0236] The third feed pattern 3610 of the third CPW pattern 3600 and the second feed pattern 3410 of the second CPW pattern 3400 may overlap in a predetermined area 3030. The third feed pattern 3610 may be electrically connected to the second feed pattern 3410 of the second CPW pattern 3400 through at least one fourth via 314.

[0237] The first grounding pattern 3320 and the second grounding pattern 3330 of the first CPW pattern 3300 can be electrically connected to the fourth grounding pattern 3200. The first power supply pattern 3310, the first grounding pattern, and the second grounding patterns 3320 and 3330 can be electrically isolated from each other.

[0238] The third grounding pattern 3420 of the second CPW pattern 3400 can be electrically connected to the fourth grounding pattern 3200. The second power supply pattern 3410 and the third grounding pattern 3420 can be electrically isolated from each other.

[0239] The fourth CPW pattern 3600 and the fourth grounding pattern 3200 can form the pattern of the GCPW structure.

[0240] Reference Figure 47 Reference numeral 4701 indicates that a third CPW pattern 3600 may be formed in the first substrate layer 300a. The third CPW pattern 3600 may include a third power supply pattern 3610 and a fifth grounding pattern 3620.

[0241] The third feed pattern 3610 may include one end 36110 overlapping with the first feed pattern 3310 of the first CPW pattern 3300, another end 36120 overlapping with the second feed pattern 3410 of the second CPW pattern 3400, a first line portion 36130 extending from one end 36110 along the -x axis direction, a second line portion 36140 extending from the end of the first line portion 36130 after being bent at a predetermined angle along the +z axis direction, a third line portion 36150 extending from the end of the second line portion 36140 along the -x axis direction, a fourth line portion 36160 extending from the end of the third line portion 36150 along the -x axis direction, and / or a fifth line portion 36170 connecting the end of the fourth line portion 36160 and the other end 36120.

[0242] The fifth line portion 36170 can be formed into a bent shape to connect the end of the fourth line portion 36160 to the other end 36120.

[0243] Reference Figure 47 Reference numeral 4702 indicates that a first CPW pattern 3300, a fourth grounding pattern 3200, and a second CPW pattern 3400 may be formed on the second substrate layer 300b.

[0244] The first power supply pattern 3310 of the first CPW pattern 3300 may overlap with one end 36110 of the third power supply pattern 3610. The first grounding pattern 3320 and the second grounding pattern 3330 of the first CPW pattern 3300 may be connected to the fourth grounding pattern 3200.

[0245] The second feed pattern 3410 of the second CPW pattern 3400 may overlap with the other end 36120 of the third feed pattern 3610. The third ground pattern 3420 of the second CPW pattern 3400 may be connected to the fourth ground pattern 3200.

[0246] The fourth grounding pattern 3200 can be electrically connected to the fifth grounding pattern 3620 of the third CPW pattern 3600.

[0247] Reference Figure 48The secondary antenna 21 may include a secondary feed line 21331, a first secondary ground pattern 21332, and a second secondary ground pattern 21333. The secondary feed line 21331 may be connected to the first feed pattern 3310 of the first CPW pattern 3300. The first secondary ground pattern 21332 may be connected to the first ground pattern 3320 of the first CPW pattern 3300. The second secondary ground pattern 21333 may be connected to the second ground pattern 3330 of the first CPW pattern 3300.

[0248] The sub-antenna 21 may include at least one slot pattern. The slot pattern may represent a pattern formed by an inward indentation of a portion of the edge of the sub-ground pattern. The larger the area of ​​the slot pattern, the smaller the area of ​​the sub-ground pattern can be. The slot pattern may be formed at predetermined locations and in predetermined shapes to improve antenna efficiency.

[0249] The secondary antenna 21 may include a first slot pattern 213321 formed by indenting a portion of the edge of the first secondary ground pattern 21332 inward. The first slot pattern 213321 may be formed by indenting a portion of the edge of the first secondary ground pattern 21332 adjacent to the antenna pattern of the main antenna 20 along the -x-axis direction. The first slot pattern 213321 may be formed in a quadrilateral shape.

[0250] The sub-antenna 21 may include a second slot pattern 213322 formed by a portion of the edge of the second sub-ground pattern 21333 recessed inward. The second slot pattern 213322 may be formed by a portion of the edge adjacent to the sub-feed line 21331 recessed along the -z axis direction. The second slot pattern 213322 may be formed in a fan shape.

[0251] When the substrate 30 is bent and configured such that the second portion 31b of the substrate 30 protrudes outward toward the side of the glass 10', the first portion 31a and the third portion 31c of the substrate 30 can overlap each other. In this case, the angle formed by the orthographic projection of the second line portion 36140 formed in the first portion 31a and the fourth line portion 36160 formed in the third portion 31c can be a predetermined angle Θ2. This predetermined angle Θ2 can correspond to the angle at which the second line portion 36140 bends in the +z-axis direction from the end of the first line portion 36130 when it extends from the end of the first line portion 36130.

[0252] The z-axis spacing between the orthographic projections of the first portion 31a of the second line portion 36140 and the fourth line portion 36160 can gradually increase with distance from the third line portion 36150. Similarly, the z-axis spacing between the orthographic projection of the first portion 31a of the fifth line portion 36170 and the first line portion 36130 can gradually increase with distance from the third line portion 36150. For example, the z-axis spacing between the orthographic projection of the first portion 31a of the fifth line portion 36170 and the first line portion 36130 can gradually increase to d21 and d22 with distance from the third line portion 36150.

[0253] The interval in the z-axis direction between the orthographic projection of the first part 31a of the fifth line portion 36170 and the first line portion 36130 may be greater than the interval in the z-axis direction between the orthographic projections of the first part 31a of the second line portion 36140 and the fourth line portion 36160.

[0254] Reference Figure 49 as well as Figure 50 The first substrate layer 300'a may include a third CPW pattern 3600'. The second substrate layer 300'b may include a first CPW pattern 3300', a fourth ground pattern 3200', and a second CPW pattern 3400'. The fourth ground pattern 3200' may be formed at least on the connection portion 31.

[0255] The third CPW pattern 3600' may include the third power supply pattern 3610' and the fifth grounding pattern 3620'.

[0256] The third feed pattern 3610' may include one end 36110' overlapping with the first feed pattern 3310' of the first CPW pattern 3300', another end 36120' overlapping with the second feed pattern 3410' of the second CPW pattern 3400', a first line portion 36130' extending from one end 36110' along the -x-axis direction, a third line portion 36150' extending from the end of the first line portion 36130' along the -x-axis direction, a fourth line portion 36160' extending from the end of the third line portion 36150' along the -x-axis direction, and / or a fifth line portion 36170' connecting the end of the fourth line portion 36160' and the other end 36120'.

[0257] The fifth line portion 36170' can be formed into a bent shape to connect the end of the fourth line portion 36160' to the other end 36120'.

[0258] A first CPW pattern 3300', a fourth ground pattern 3200', and a second CPW pattern 3400' can be formed on the second substrate layer 300'b.

[0259] The first power supply pattern 3310' of the first CPW pattern 3300' may overlap with one end 36110' of the third power supply pattern 3610. The first grounding pattern 3320' and the second grounding pattern 3330' of the first CPW pattern 3300' may be connected to the fourth grounding pattern 3200'.

[0260] The second feed pattern 3410' of the second CPW pattern 3400' can overlap with the other end 36120' of the third feed pattern 3610'. The third ground pattern 3420' of the second CPW pattern 3400' can be connected to the fourth ground pattern 3200'.

[0261] The fourth grounding pattern 3200' can be electrically connected to the fifth grounding pattern 3620' of the third CPW pattern 3600'.

[0262] Reference Figure 51 When the substrate 30 is bent and configured such that the second portion 31b of the substrate 30 protrudes outward toward the side of the glass 10', the first portion 31a and the third portion 31c of the substrate 30 can overlap each other.

[0263] At this time, the angle formed by the orthographic projection of the first line portion 36130' formed in the first part 31a and the fifth line portion 36170' formed in the third part 31c can be greater than a predetermined angle Θ3.

[0264] The interval in the z-axis direction between the orthographic projections of the first portion 31a of the first line portion 36130' and the fifth line portion 36170' can gradually increase as one moves away from the third line portion 36150'. For example, the interval in the z-axis direction between the orthographic projections of the first portion 31a of the first line portion 36130' and the fifth line portion 36170' can gradually increase to d31 and d32 as one moves away from the third line portion 36150'.

[0265] As described above, according to at least one embodiment of the present disclosure, the antenna 20 and the connector 130 can be stably connected.

[0266] Furthermore, according to at least one embodiment of this disclosure, various structures can be optimized for the position of the glass in which the antenna 20 is attached between the two layers of glass 10, 10a.

[0267] Furthermore, according to at least one embodiment of this disclosure, the thickness of the flexible printed circuit board can be minimized.

[0268] In addition, according to at least one embodiment of this disclosure, it is possible to reduce the feed loss of the antenna 20 operating in broadband.

[0269] Furthermore, according to at least one embodiment of this disclosure, the efficiency of the antenna 20 operating in broadband can be improved.

[0270] In addition, according to at least one embodiment of this disclosure, interference between feeder lines is prevented, thereby reducing feeder losses.

[0271] In addition, according to at least one embodiment of this disclosure, an antenna optimized for the area of ​​the opaque region of the glass can be provided.

[0272] Reference Figures 1 to 51 According to one aspect of this disclosure, a flexible printed circuit board is composed of multiple layers, which may include: a first substrate portion including a first feed pattern disposed on any one of the multiple layers and electrically connected to an antenna, and a plurality of first ground patterns disposed on both sides of the first feed pattern; a second substrate portion including a second feed pattern disposed on any one of the multiple layers and electrically connected to a cable, and a plurality of second ground patterns disposed on both sides of the second feed pattern; and a third substrate portion disposed between the first substrate portion and the second substrate portion, covering a portion of the glass side, the third substrate portion including: a third feed pattern, It is configured in the first layer adjacent to the glass in the above-mentioned plurality of layers; and a third grounding pattern configured in the second layer, the two ends of the third grounding pattern being electrically connected to the first grounding pattern and the second grounding pattern respectively, the two ends of the third grounding pattern being electrically connected to the first grounding pattern and the second grounding pattern respectively, the third grounding pattern including a first grounding portion adjacent to one side of the glass, a second grounding portion adjacent to the side of the glass and a third grounding portion adjacent to the other side of the glass, the spacing between the orthographic projections of the first grounding portion and the third grounding portion gradually increases as it moves away from the second grounding portion.

[0273] In addition, according to one aspect of this disclosure, the third substrate portion may include a plurality of fourth grounding patterns disposed on the first layer and on both sides of the third power feeding pattern.

[0274] Additionally, according to one aspect of this disclosure, the first power supply portion may include: a first line portion extending along a first direction from one end of the third power supply pattern electrically connected to the first power supply pattern; and a second line portion extending from the end of the first line portion after being bent at a predetermined angle along a second direction perpendicular to the first direction, the second power supply portion including a third line portion extending from the end of the second line portion, and the third power supply portion including a fourth line portion extending along the first direction from the end of the third line portion.

[0275] Furthermore, according to one aspect of this disclosure, the aforementioned third line portion may extend along the aforementioned first direction.

[0276] In addition, according to one aspect of this disclosure, the third power supply portion may include a fifth line portion, which connects the other end of the third power supply pattern electrically connected to the second power supply pattern and the end of the fourth line portion, wherein the fifth line portion is formed in a shape bent along the second direction.

[0277] Furthermore, according to one aspect of this disclosure, the interval between the orthographic projections of the first line portion and the fifth line portion may exceed the interval between the orthographic projections of the second line portion and the fourth line portion.

[0278] Furthermore, according to one aspect of this disclosure, the angle formed by the orthographic projections of the first power supply portion and the third power supply portion can be above a predetermined angle, the predetermined angle corresponding to the maximum value of the length of the predetermined area where the orthographic projections of the first power supply portion and the third power supply portion overlap.

[0279] In addition, according to one aspect of this disclosure, the maximum value of the length of the predetermined region can be set based on the waveguide wavelength, which corresponds to the maximum value of the frequency used when communicating through the antenna.

[0280] Additionally, an antenna assembly according to one aspect of this disclosure may include: a main antenna, which includes a main feed line and a plurality of main ground patterns; a secondary antenna, which includes a secondary feed line connected to the main feed line and a plurality of secondary ground patterns connected to the plurality of main ground patterns; and a flexible printed circuit board composed of multiple layers, comprising: a first substrate portion, which includes a first feed pattern disposed on any one of the plurality of layers and connected to the secondary feed line and a plurality of first ground patterns connected to the plurality of secondary ground patterns; a second substrate portion, which includes a second feed pattern disposed on any one of the plurality of layers and electrically connected to a cable and a plurality of second ground patterns disposed on both sides of the second feed pattern; and a third substrate portion, which is disposed on the first substrate portion and the upper... Between the second substrate portions, a portion of the side edge of the covered glass is included. The third substrate portion includes: a third feed pattern disposed in the first layer adjacent to the glass in the plurality of layers; and a third ground pattern disposed in the second layer. The two ends of the third feed pattern are electrically connected to the first feed pattern and the second feed pattern, respectively. The two ends of the third ground pattern are electrically connected to the first ground pattern and the second ground pattern, respectively. The third feed pattern includes a first feed portion adjacent to one side of the glass, a second feed portion adjacent to the side edge of the glass, and a third feed portion adjacent to the other side of the glass. The spacing between the orthographic projections of the first feed portion and the third feed portion gradually increases as the distance from the second feed portion increases.

[0281] In addition, according to one aspect of this disclosure, the main antenna and the secondary antenna may be located in the transparent area of ​​the glass, and the flexible printed circuit board may be located in the opaque area of ​​the glass.

[0282] Furthermore, according to one aspect of this disclosure, the transparency of the aforementioned secondary antenna may be lower than that of the aforementioned primary antenna.

[0283] Furthermore, according to one aspect of this disclosure, the surface resistance of the sub-antenna may be less than the surface resistance of the main antenna.

[0284] Furthermore, according to one aspect of this disclosure, the frequency of the signal corresponding to the aforementioned secondary antenna may exceed the frequency of the signal corresponding to the aforementioned primary antenna.

[0285] Additionally, according to one aspect of this disclosure, the first power supply portion may include: a first line portion extending along a first direction from one end of the third power supply pattern electrically connected to the first power supply pattern; and a second line portion extending from the end of the first line portion after being bent at a predetermined angle along a second direction perpendicular to the first direction, the second power supply portion including a third line portion extending from the end of the second line portion, and the third power supply portion including a fourth line portion extending along the first direction from the end of the third line portion.

[0286] Additionally, according to one aspect of this disclosure, the first power supply portion may include a first line portion extending along a first direction from one end of the third power supply pattern electrically connected to the first power supply pattern, the second power supply portion includes a third line portion extending from the end of the first line portion, the third power supply portion includes a fourth line portion extending along the first direction from the end of the third line portion, and a fifth line portion connecting the other end of the third power supply pattern electrically connected to the second power supply pattern and the end of the fourth line portion, the fifth line portion being formed in a shape bent along a second direction perpendicular to the first direction.

[0287] The accompanying drawings are provided only to facilitate understanding of the embodiments disclosed in this specification. The technical ideas disclosed in this specification are not limited to these drawings and should be understood to include all modifications, equivalents and substitutions contained within the ideas and technical scope of this disclosure.

[0288] On the other hand, the operating methods of this disclosure can be implemented in the form of processor-readable code on a processor-readable recording medium. Processor-readable recording media include all types of recording devices that store data that can be read by a processor. Examples of processor-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage devices, etc., and also include media implemented in carrier wave form, such as those transmitted via the Internet. Furthermore, processor-readable recording media can be distributed across computer systems connected via a network, thereby enabling distributed storage and execution of processor-readable code.

[0289] Furthermore, although preferred embodiments of the present disclosure have been shown and described above, the present disclosure is not limited to the specific embodiments described above. Various modifications can be implemented by those skilled in the art without departing from the spirit of the present disclosure as claimed in the claims, and such modifications should not be distinguished from the technical ideas or prospects of the present disclosure.

Claims

1. A flexible printed circuit board, comprising multiple layers, characterized in that it includes: The first substrate includes a first feed pattern disposed on any one of the plurality of layers and electrically connected to the antenna, and a plurality of first ground patterns disposed on both sides of the first feed pattern. The second substrate includes a second feed pattern disposed on any one of the plurality of layers and electrically connected to a cable, and a plurality of second ground patterns disposed on both sides of the second feed pattern. as well as A third substrate portion is disposed between the first substrate portion and the second substrate portion, thereby covering a portion of the glass sidewall. The third substrate portion includes a third feed pattern disposed in the first layer adjacent to the glass in the plurality of layers; And the third grounding pattern configured on the second layer, The two ends of the third feed pattern are electrically connected to the first feed pattern and the second feed pattern, respectively. The two ends of the third grounding pattern are electrically connected to the first grounding pattern and the second grounding pattern, respectively. The aforementioned third feed pattern includes a first feed portion adjacent to one side of the glass, a second feed portion adjacent to the side edge of the glass, and a third feed portion adjacent to the other side of the glass. The distance between the orthographic projections of the first power supply section and the third power supply section increases as they move further away from the second power supply section.

2. The flexible printed circuit board according to claim 1, characterized in that, The aforementioned third substrate portion includes: a plurality of fourth grounding patterns disposed on the first layer and on both sides of the aforementioned third power supply pattern.

3. The flexible printed circuit board according to claim 1, characterized in that, The aforementioned first power supply section includes: The first line portion extends along a first direction from one end of the third feed pattern electrically connected to the first feed pattern; and The second line portion extends from the end of the first line portion after being bent at a predetermined angle along a second direction perpendicular to the first direction. The second power supply section includes a third wire section extending from the end of the second wire section. The aforementioned third power supply section includes a fourth line section extending from the end of the aforementioned third line section along the aforementioned first direction.

4. The flexible printed circuit board according to claim 3, characterized in that, The third line portion extends along the first direction mentioned above.

5. The flexible printed circuit board according to claim 3, characterized in that, The aforementioned third feed section includes: a fifth line portion, which connects the other end of the third feed pattern, which is electrically connected to the aforementioned second feed pattern, and the end of the aforementioned fourth line portion. The fifth line portion is formed into a shape that bends along the second direction.

6. The flexible printed circuit board according to claim 5, characterized in that, The interval between the orthographic projections of the first line portion and the fifth line portion exceeds the interval between the orthographic projections of the second line portion and the fourth line portion.

7. The flexible printed circuit board according to claim 1, characterized in that, The angle formed by the orthographic projections of the first power supply portion and the third power supply portion is above a predetermined angle, and the predetermined angle corresponds to the maximum value of the length of the predetermined area where the orthographic projections of the first power supply portion and the third power supply portion overlap.

8. The flexible printed circuit board according to claim 7, characterized in that, The maximum length of the predetermined region is set based on the waveguide wavelength, which corresponds to the maximum value of the frequency used when communicating through the antenna.

9. An antenna assembly, characterized in that, include: The main antenna includes the main feed line and multiple main grounding patterns; The secondary antenna includes a secondary feed line connected to the aforementioned main feed line and a plurality of secondary grounding patterns connected to the aforementioned plurality of main grounding patterns. as well as Flexible printed circuit board composed of multiple layers include: The first substrate portion includes a first feed pattern disposed on any one of the plurality of layers and connected to the sub-feed wire, and a plurality of first ground patterns connected to the plurality of sub-ground patterns. The second substrate includes a second feed pattern disposed on any one of the plurality of layers and electrically connected to a cable, and a plurality of second ground patterns disposed on both sides of the second feed pattern. A third substrate portion is disposed between the first substrate portion and the second substrate portion, thereby covering a portion of the glass sidewall. The third substrate portion includes: a third feed pattern disposed in the first layer adjacent to the glass in the plurality of layers; and a third ground pattern disposed in the second layer. The two ends of the third feed pattern are electrically connected to the first feed pattern and the second feed pattern, respectively. The two ends of the third grounding pattern are electrically connected to the first grounding pattern and the second grounding pattern, respectively. The aforementioned third feed pattern includes a first feed portion adjacent to one side of the glass, a second feed portion adjacent to the side edge of the glass, and a third feed portion adjacent to the other side of the glass. The distance between the orthographic projections of the first power supply section and the third power supply section increases as they move further away from the second power supply section.

10. The antenna assembly according to claim 9, characterized in that, The aforementioned main antenna and the aforementioned secondary antenna are located in the transparent area of ​​the aforementioned glass. The aforementioned flexible printed circuit board is located in the opaque area of ​​the aforementioned glass.

11. The antenna assembly according to claim 9, characterized in that, The transparency of the aforementioned secondary antenna is lower than that of the aforementioned primary antenna.

12. The antenna assembly according to claim 9, characterized in that, The surface resistance of the aforementioned secondary antenna is less than that of the aforementioned primary antenna.

13. The antenna assembly according to claim 9, characterized in that, The frequency of the signal corresponding to the aforementioned secondary antenna exceeds the frequency of the signal corresponding to the aforementioned primary antenna.

14. The antenna assembly according to claim 9, characterized in that, The aforementioned first power supply section includes: The first line portion extends along a first direction from one end of the third feed pattern electrically connected to the first feed pattern; and The second line portion extends from the end of the first line portion after being bent at a predetermined angle along a second direction perpendicular to the first direction. The second power supply section includes a third wire section extending from the end of the second wire section. The aforementioned third power supply section includes a fourth line section extending from the end of the aforementioned third line section along the aforementioned first direction.

15. The antenna assembly according to claim 9, characterized in that, The first feed portion includes a first line portion extending along a first direction from one end of the third feed pattern electrically connected to the first feed pattern. The second power supply section includes a third wire section extending from the end of the first wire section. The third feed portion includes a fourth line portion extending from the end of the third line portion along the first direction, and a fifth line portion connecting the other end of the third feed pattern, which is electrically connected to the second feed pattern, and the end of the fourth line portion. The aforementioned fifth line portion is formed into a shape that bends along a second direction perpendicular to the aforementioned first direction.

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