Transparent antenna module and vehicle antenna assembly provided with the same

Abstract

A vehicle antenna assembly includes a first glass having an opaque region on one face, a second glass disposed opposite the first glass, a thin film layer disposed between the first glass and the second glass, a first antenna pattern disposed on a first face of the second glass adjacent to a lower end of the thin film layer and formed of a first transparent electrode portion of a mesh structure, a second antenna pattern disposed on a second face of the first glass adjacent to an upper end of the thin film layer and formed of a second transparent electrode portion of a mesh structure, and a flexible substrate formed with a power supply line connected to the first transparent electrode portion or the second transparent electrode portion.

Description

Technical Field

[0001] This specification relates to a transparent antenna module. More specifically, it relates to a transparent antenna module and a vehicle antenna assembly equipped with the transparent antenna module. Background Technology

[0002] As technology evolves from 4G (LTE: Long Term Evolution) to 5G (Fifth Generation Mobile) communication, automotive antennas are increasingly demanding network scalability, expanding from existing FM / AM (Frequency / Amplitude Modulation) antennas and LTE antennas to 5G antennas or V2X (Vehicle-to-Everything) antennas.

[0003] With the full rollout of 5G communication, vehicle antennas are gradually expanding from existing FM / AM, LTE (4G), and GNSS (Global Navigation Satellite System) antennas to those supporting high-frequency 5G Sub6 and V2X communication. Consequently, vehicle antennas, considering performance, design, and network scalability, can be further expanded into various forms such as shark fin antennas, in-dash (insulated in the dashboard), in-spoiler (insulated in the rear wing), and rearview mirror antennas.

[0004] However, as the frequency of 5G signals increases, their directness also increases, making them prone to signal loss when there are obstacles. To minimize signal loss within the 5G frequency band, the closer the signal is to the vehicle's exterior, which minimizes obstacles, the better for signal transmission and reception.

[0005] Existing shark fin antennas are mounted on the vehicle exterior, which is beneficial for signal transmission and reception. However, they have limited space to accommodate various antennas such as 5G, V2X, and satellite antennas, resulting in limited network scalability. Therefore, antennas not only need to possess the required performance characteristics, including signal loss, but also various other performance requirements, such as network scalability to support future high-speed communications, design flexibility without affecting the vehicle's original design, and ease of installation within the vehicle.

[0006] In this regard, transparent antennas formed on vehicle glass can not only be implemented as high-performance antennas, but also do not affect vehicle design and have high network scalability, thus attracting much attention as a future-oriented antenna.

[0007] Transparent antennas can be installed in various locations such as the windshield, rear windshield, side windows, roof, rearview mirrors, and headlights, thus offering the significant advantage of being able to install antennas while maintaining the original design and communication structure. Conversely, because transparent antennas are made based on a transparent film, their disadvantage is that they are less resistant to scratches and abrasions, requiring consumers to pay close attention.

[0008] On the other hand, transparent antennas offer the following advantages: because they are attached to the vehicle's glass, even multiple vehicle antennas will not be conspicuous; compared to existing built-in antennas, they avoid signal loss caused by mechanical components during high-frequency communication signal processing. When attaching a transparent antenna to the vehicle's glass, the power supply circuit structure also needs to adopt a double-sided or single-sided FPCB (Flexible Printed Circuit Board) form, depending on the structure of the transparent antenna module. Furthermore, since the transparent antenna module is exposed to the outside, it is especially important to possess reliability that can withstand the harsh environment during vehicle operation and durability to resist occupant negligence. Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] The purpose of this specification is to provide a vehicle antenna assembly with a built-in transparent antenna module.

[0011] The purpose of this specification is to propose a structure for an FPCB that forms a power supply line that can be used independently of the structure of a transparent antenna module.

[0012] The purpose of this manual is to improve durability and reliability, even when transparent antennas are mounted on vehicle glass or placed inside double-layered glass.

[0013] The purpose of this specification is to improve the bandwidth characteristics of transparent antennas while increasing the freedom of antenna design in a double-layered bonded glass structure.

[0014] The purpose of this specification is to reduce interference between transparent antennas in a double-layered bonded glass structure while increasing the freedom of antenna design.

[0015] Methods for solving problems

[0016] To achieve the above or other objectives, the vehicle antenna assembly provided in this specification includes: a first glass having an opaque region on one side; a second glass disposed opposite to the first glass; a film layer disposed between the first glass and the second glass; a first antenna pattern disposed on a first side of the second glass adjacent to the lower end of the film layer and formed by a first transparent electrode portion with a mesh structure; a second antenna pattern disposed on a second side of the first glass adjacent to the upper end of the film layer and formed by a second transparent electrode portion with a mesh structure; and a flexible substrate having power supply lines formed thereon connected to the first or second transparent electrode portion. Possibly, at least a portion of the power supply lines may overlap with the opaque region.

[0017] According to an embodiment, the first glass may be formed facing the inner region of the vehicle, and the second glass may be formed facing the outer region of the vehicle. Alternatively, the first glass and the second glass may form a double-layered bonded glass structure bonded by a thin film layer formed of PVB (Polyvinyl butyral) layer.

[0018] According to an embodiment, the power supply line may include: a first power supply line formed in a first region on a first surface of a thin film of the flexible substrate; a second power supply line formed in the first region overlapping the first power supply line on a second surface of the thin film; and a through hole formed to vertically connect the first power supply line and the second power supply line.

[0019] According to an embodiment, on the first surface of the film, a first grounding wire may be spaced apart from the first power supply wire and disposed on both sides of the first power supply wire. Alternatively, on the second surface of the film, in the first region, a second grounding wire may be spaced apart from the second power supply wire and disposed on both sides of the second power supply wire. Furthermore, a grounding wire through-hole may be provided in the first region to vertically connect the first grounding wire and the second grounding wire.

[0020] According to an embodiment, the first power supply line and the second power supply line may have a first width along the X-axis and a first length along the Y-axis. The power supply line may also include: a connecting line having a second width along the X-axis and a second length along the Y-axis in a second region of the first surface; and a pad having a third width along the X-axis and a third length along the Y-axis in a third region of the first surface. The second width may be narrower than the first width, and the second length may be longer than the first length. The third width may be narrower than the first width and wider than the second width.

[0021] According to an embodiment, the first grounding wire may be disposed in the first region, the second region, and the third region of the first surface. Alternatively, the second grounding wire may be disposed only in the first region of the second surface. Alternatively, in the first region, the first power supply wire and the first grounding wire may be disposed separated by a first interval. Alternatively, in the first region, the second power supply wire and the second grounding wire may be disposed separated by the first interval. Alternatively, in the second region, the connecting wire and the first grounding wire may be disposed separated by a second interval wider than the first interval.

[0022] According to an embodiment, the second power supply line of the first region on the second side of the flexible substrate may be connected to the first transparent electrode portion of the first antenna pattern. The second ground line of the first region on the second side may be connected to a ground line adjacent to the first antenna pattern via ACP bonding. The pads of the third region on the first side may be connected to the signal lines of an RF cable via soldering.

[0023] According to an embodiment, the first power supply line of the first region on the first surface of the flexible substrate may be connected to the second transparent electrode portion of the second antenna pattern. The first ground line of the first region on the first surface may be connected to a ground line adjacent to the second antenna pattern via ACP bonding. The pads of the third region on the first surface may be connected to the signal lines of an RF cable via soldering.

[0024] According to an embodiment, a PET substrate having the first antenna pattern formed thereon may be attached to the second glass via an adhesive layer. The adhesive layer may include: a first adhesive region disposed between the PET substrate and the second glass; and a second adhesive region disposed between the flexible substrate and the second glass. The second thickness of the second adhesive region may be formed to be thicker than the first thickness of the first adhesive region. The second power supply line of the flexible substrate may be connected to the first antenna pattern.

[0025] According to an embodiment, a PET substrate having the second antenna pattern formed thereon may be attached to the second glass via an adhesive layer. The adhesive layer may include: a first adhesive region disposed between the PET substrate and the first glass; and a second adhesive region disposed between the flexible substrate and the first glass. The second thickness of the second adhesive region may be formed to be thicker than the first thickness of the first adhesive region. The first power supply line of the flexible substrate may be connected to the second antenna pattern.

[0026] According to an embodiment, the power supply line may be configured to supply power to a first antenna element and a second antenna element disposed adjacent to the first antenna element. Alternatively, the power supply line may further include: a third power supply line spaced apart from the first power supply line on the first surface of the flexible substrate; and a fourth power supply line spaced apart from the second power supply line on the second surface.

[0027] According to an embodiment, the first power supply line may be connected to the pad in the third region via a connection line in the second region of the first surface. Alternatively, the third power supply line may be connected to the second pad in the third region via a second connection line in the second region of the first surface.

[0028] According to an embodiment, the power supply line may further include a second through hole, which is formed to vertically connect the third power supply line and the fourth power supply line.

[0029] According to an embodiment, the second power supply line may be connected to the first antenna pattern of the first antenna element. Alternatively, the fourth power supply line may be connected to the first antenna pattern of the second antenna element.

[0030] According to an embodiment, the first power supply line may be connected to the second antenna pattern of the first antenna element. Alternatively, the third power supply line may be connected to the second antenna pattern of the second antenna element.

[0031] According to an embodiment, the first power supply line may be connected to the second power supply line through the through hole. Alternatively, the third power supply line may be configured not to be connected to the fourth power supply line.

[0032] According to an embodiment, the second power supply line on the second side of the flexible substrate may be connected to the first antenna pattern of the first antenna element. Alternatively, the third power supply line on the first side of the flexible substrate may be connected to the second antenna pattern of the second antenna element.

[0033] According to an embodiment, the antenna assembly may further include a conductive pattern connected to one end of the second antenna pattern. The second antenna pattern may be offset relative to the first antenna pattern in one axial direction. The power supply line may be connected to the electrode pads of the first transparent electrode portion or the conductive pattern.

[0034] According to an embodiment, the second power supply line on the second surface of the flexible substrate may be connected to the first electrode pad at the end of the first transparent electrode portion forming the first antenna pattern.

[0035] According to an embodiment, the first power supply line on the first surface of the flexible substrate may be connected to the second electrode pad at the end of the conductive pattern.

[0036] Invention Effects

[0037] The technical effects of the transparent antenna module and the vehicle antenna assembly equipped with the transparent antenna module provided in this specification can be summarized as follows, but are not limited thereto.

[0038] According to this specification, a vehicle antenna assembly with a transparent antenna module built into a structure configurable between two layers of bonded glass and a method for manufacturing the vehicle antenna assembly are provided.

[0039] According to this specification, by stacking multiple antenna patterns in a double-layered bonded glass structure, the bandwidth characteristics of a transparent antenna can be improved while increasing the freedom of antenna design.

[0040] According to this specification, by overlapping multiple antenna patterns arranged on different layers in a double-layered bonded glass structure, the bandwidth characteristics of a transparent antenna can be improved while increasing the freedom of antenna design.

[0041] According to this specification, by spacing multiple antenna patterns arranged on different layers in a double-layered bonded glass structure, interference between transparent antennas can be reduced while increasing the freedom of antenna design.

[0042] According to this specification, a vehicle antenna assembly with a structure in which the transparent antenna and power supply line are not visible to the naked eye and the transparent antenna is protected from damage by glass is provided.

[0043] The extent of applicability of this specification should become apparent from the following detailed description. However, those skilled in the art will clearly understand the spirit and various modifications and alterations within the scope of this specification, and therefore it should be understood that the detailed description and specific embodiments, such as the preferred embodiments described herein, are merely examples. Attached Figure Description

[0044] Figure 1 This is a diagram illustrating the vehicle provided in the embodiments described in this specification.

[0045] Figure 2 This is a structural diagram of the vehicle provided in the embodiments of this specification.

[0046] Figure 3 A perspective view of a vehicle glass that can be attached to or joined to a vehicle frame is shown.

[0047] Figure 4 It shows Figure 3 A cross-sectional view showing the integration of the glass with the vehicle's frame.

[0048] Figure 5 The antenna assembly and connector structure are shown, which are configured in the transparent and opaque areas of the vehicle glass.

[0049] Figure 6 The structure of a transparent antenna module on a vehicle window is shown, which is connected to a cable by welding or connectors.

[0050] Figure 7 The diagram shows a structure in which a transparent antenna module, configured on a vehicle glass according to the glass surface structure and the glass embedded structure, is connected to an FPCB with power supply lines.

[0051] Figure 8 The diagram shows a structure in which antenna patterns formed on the front and back sides of a substrate are connected to cables via an FPCB on the passenger side of a vehicle window.

[0052] Figure 9a as well as Figure 9b A cross-sectional view of a vehicle antenna assembly disposed between the two panes of glass in a vehicle is shown.

[0053] Figure 10 The front and back views of the flexible substrate of the vehicle antenna assembly shown in Figure 9 are illustrated.

[0054] Figure 11 A cross-sectional view of the flexible substrate of the vehicle antenna assembly shown in Figure 9 is presented.

[0055] Figure 12 An embodiment is shown in which a flexible substrate equipped with a double-layer power supply line is connected to an antenna pattern made of transparent material.

[0056] Figure 13a as well as Figure 13b An embodiment of a structure in which an antenna pattern formed on a PET substrate is disposed between a first thin film layer and a second thin film layer and connected to a flexible substrate is shown.

[0057] Figure 14a as well as Figure 14b An embodiment of a structure in which an antenna pattern formed on a PET substrate in a single-layer glass structure is configured between a thin film layer and an additional adhesive layer and connected to a flexible substrate is shown.

[0058] Figure 15a as well as Figure 15b An embodiment of a structure in which an antenna pattern formed on a PET substrate is disposed between a thin film layer and an additional adhesive layer and connected to a flexible substrate is shown.

[0059] Figure 16a as well as Figure 16bAn embodiment of a structure in which at least one of the first and second antenna patterns in a double-layer bonded glass structure is formed on a PET substrate and connected to a flexible substrate by a thin film layer and an additional adhesive layer is shown.

[0060] Figure 17 The structure shown includes the first and second antenna patterns stacked on the Z-axis, and the antenna elements are spaced apart on the X-axis.

[0061] Figure 18a as well as Figure 18b It shows the formation with Figure 17 The structure of the flexible substrate for the power supply lines connecting the first and second antenna elements.

[0062] Figure 19a as well as Figure 19b An antenna assembly for a vehicle, including the spaced-out antenna patterns provided in the embodiments, is shown.

[0063] Figure 20 The structure of a second antenna pattern spaced apart and connected to a conductive pattern is shown. Detailed Implementation

[0064] The embodiments disclosed in this specification will now be described in detail with reference to the accompanying drawings. Identical or similar components will be assigned the same reference numerals regardless of the reference numerals, and repeated descriptions will be omitted. The suffixes "module" and "part" used for components in the following description are merely for ease of writing and do not inherently distinguish one another. Furthermore, when describing the embodiments disclosed in this specification, detailed descriptions of relevant prior art will be omitted if it is determined that such descriptions might obscure the spirit of the embodiments disclosed in this specification. The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification; the technical ideas disclosed in this specification are not limited to the drawings and should be understood to include all modifications, equivalents, or substitutions within the scope of the ideas and techniques of this specification.

[0065] While terms such as "1," "2," etc., which contain ordinal numbers, can be used to describe various constituent elements, the constituent elements are not limited by these terms. These terms are only used to distinguish one constituent element from others.

[0066] When referring to a constituent element as being "connected" or "linked" to another constituent element, it can mean that the element is directly connected or linked to the other constituent element, but it should be understood that there may be other constituent elements in between. Conversely, when referring to a constituent element as being "directly connected" or "directly linked" to another constituent element, it should be understood that there are no other constituent elements in between.

[0067] Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0068] It should be understood that the terms "comprising" or "having" in this application are intended to specify the presence of features, figures, steps, actions, constituent elements, components or combinations thereof described in the specification, and do not preclude the presence or additional possibilities of one or more other features, figures, steps, actions, constituent elements, components or combinations thereof.

[0069] The transparent antenna module and its manufacturing method provided in this specification will be described in detail below. Regarding this, Figure 1 This is a diagram illustrating the vehicle provided in the embodiments described in this specification.

[0070] Reference Figure 1 Vehicle 1 may be equipped with at least one communication antenna. Vehicle 1 may use the communication antenna to transmit and / or receive signals in various frequency bands. Vehicle 1 may perform V2V (Vehicle-to-Vehicle), V2I (Vehicle-to-Infrastructure), V2P (Vehicle-to-Pedestrian), and V2N (Vehicle-to-network) communications.

[0071] The antenna can be constructed from a substrate made of a material such as PET (polyethylene terephthalate) and an antenna pattern formed on the substrate. For example, the antenna can be a transparent antenna.

[0072] The antenna can be disposed on the dielectric of vehicle 1. The antenna can be disposed on the glass of vehicle 1. The antenna can be combined with or attached to the windshield 101, door glass 102, 103, rear side window glass 104, rear windshield (not shown), rearview mirror (not shown), sunroof 105, or lampshade glass 106. For example, the antenna can be a transparent antenna.

[0073] Figure 2 This is a structural diagram of the vehicle provided in the embodiments of this specification. (Refer to...) Figure 2 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 running 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. In contrast, vehicle 1 may include other structures besides those described above, or omit some of the structures described above.

[0074] The object detection device 410 can be a device for detecting objects located outside the vehicle 1. For example, 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.

[0075] The communication device 420 can be a device for communicating with external devices. The communication device 420 may include at least one of a transmitting antenna, a receiving antenna, an RF (Radio Frequency) circuit or RF element capable of implementing various communication protocols. For example, 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 (Intelligent Transportation Systems) communication unit 427.

[0076] The user interface device 431 can be a device for enabling interaction between the vehicle 1 and the user. The vehicle 1 can implement UI (User Interface) or UX (User Experience) through the user interface device 431.

[0077] The driving control device 432 may be a device for receiving user input for driving. The vehicle drive unit 433 may be a device for electrically controlling the drive of various devices within the vehicle 1. The operating system 434 may be a system for controlling various operations of the vehicle 1. The navigation system 435 may provide navigation information. The sensing unit 436 may sense the state of the vehicle 1.

[0078] The interface unit 437 serves as a channel for communication with various types of external devices connected to the vehicle 1. The memory 438 stores basic data about the units of the vehicle 1, control data for controlling the operation of the units, and input / output data. The power supply unit 439 supplies power to the various components required for their operation. The control unit 440 controls the overall operation of the various units within the vehicle 1. The control unit 440 can be implemented using an ECU (Electronic Control Unit) and / or a TCU (Telematics Control Unit).

[0079] On the other hand, the glass of the vehicle implementing the transparent antenna module provided in this specification can be integrated with the vehicle frame. Regarding this point, Figure 3 A perspective view of a vehicle glass that can be attached to or joined to a vehicle frame is shown. Figure 4 It shows Figure 3 A cross-sectional view showing the integration of the glass with the vehicle's frame.

[0080] Reference Figure 3 as well as Figure 4 Glass 10, 10' can be attached to or bonded to the vehicle frame 9 and can cover the opening 9h of the frame 9. For example, glass 10, 10' can be glass of vehicle 1 such as windshield 101, door glass 102, 103, rear side window glass 104, rear windshield, rearview mirror, sunroof 105, or lampshade glass 106 (see reference). Figure 1 ).

[0081] The groove 9g of the frame 9 can extend along the edge of the glass 10, 10' and can define the boundary of the opening 9h. For example, the frame 9 can be made of metal, and sealant 7 can be filled between the groove 9g and the glass 10, 10'. The groove 9g can be formed with a step between it and the inner boundary of the frame 9. Glass 10, which has an opaque area 12, can be disposed within the groove 9g formed with a step at the inner end of the frame 9. Since the glass 10 is disposed within the groove 9g, the step of the groove 9g can be perceived as absent when viewed from outside the vehicle.

[0082] Antenna 20 can be located on one surface of glass 10 or inside glass 10. Antenna 20 can be transparent. Antenna 20 can be flexible.

[0083] The connection module, including connector 100c, can be configured between the edge of glass 10, 10' and antenna 20, and located on one surface of glass 10, 10'. Connector 100c of the connection module can be electrically connected to antenna 20 via substrate 30. Inner cover 8 can be opposite to glass 10 relative to frame 9 and can cover the connection module. Inner cover 8 can be referred to as interior cover 8. Connection module can be referred to as connector device, FAKRA female connector portion, or connector assembly.

[0084] On the other hand, the vehicle antenna assembly that implements the transparent antenna module provided in this specification can be configured in both the transparent and opaque areas of the vehicle glass. Regarding this point, Figure 5 The antenna assembly and connector structure are shown, which are configured in the transparent and opaque areas of the vehicle glass.

[0085] Reference Figure 5The glass 10 may include a transparent region 11 and an opaque region 12. The opaque region 12 may be a black mask region or a frit region. For example, the transparent region 11 may occupy most of the glass 10, and the opaque region 12 may be adjacent to one edge of the glass 10. The transparent region 11 and the opaque region 12 may be formed with the same width W10, and the height H11 of the transparent region 11 may be greater than the height H12 of the opaque region 12.

[0086] Antenna 20 may be located on the transparent region 11, adjacent to the boundary between the transparent region 11 and the opaque region 12. A connection module including connector 100c may be located on the opaque region 12, and connector 100c of the connection module may be connected to antenna 20 via housing base plate 111. Housing base plate 111 may be fastened to housing top plate 112 to form housing 110. Connector 100c may be accommodated inside housing 110. Housing 110, which accommodates connector 100c, may be configured in the opaque region 12. Alternatively, at least a portion of the connection module may also be located in the transparent region 11.

[0087] The following provides a detailed description of the transparent antenna module for vehicles and the vehicle antenna assembly equipped with the transparent antenna module provided in this specification. In this regard, with the expansion of applications for high-frequency communication antennas for vehicles, transparent antenna technology, which offers high efficiency and minimal signal loss at high frequencies, has attracted considerable attention. Typically, transparent antennas for vehicles are directly attached to the surface of the vehicle's glass or positioned between two layers of bonded glass. Both of these cases require a signal connection component that electrically connects the antenna to the electronic control unit (ECU, TCU, etc.). This signal connection component can be implemented by directly connecting the antenna and the control unit using a cable. Alternatively, after connecting the antenna using a flexible printed circuit board (FPCB), a cable can be used to connect the flexible circuit board to the control unit to implement the signal connection component.

[0088] Figure 6 The structure of a transparent antenna module on a vehicle window is shown, which is connected to a cable by welding or connectors. Figure 6 (a) shows a structure in which pad SP and RF cable 100c are connected by soldering, wherein the pad SP is connected to an antenna pattern 1100 of transparent material disposed on glass 10. Figure 6(b) shows a structure in which electrode pads EP and cable connectors CCP are connected by soldering, wherein the electrode pads EP are connected to an antenna pattern 1100 of transparent material disposed on glass 10. The structure is shown in which connectors are connected to the electrode pads EP and cable connectors CCP connected to the antenna pattern 1100, respectively, and the connectors on both sides are secured. This requires additional electrode pads EP for soldering conductive material to the antenna pattern 1100 of transparent material.

[0089] Furthermore, the conductors of the transparent material antenna pattern 1100 are made very thin to achieve their intended purpose of stealth, which damages the conductors during soldering. Therefore, the electrode pads EP used for soldering need to be made very thick. Also, when placing the transparent antenna between the two layers of bonded glass, a cable needs to be placed between the two layers of glass. Therefore, an adhesive (mainly PVB) for bonding the glass needs to be thicker than the diameter of the cable.

[0090] Therefore, the increased thickness and weight of the double-layered glass makes it incompatible with existing mass production processes in vehicle manufacturing, making it difficult to apply to transparent antennas. Furthermore, it has the following drawbacks: when using cables with a diameter thinner than the commercially available glass adhesive PVB, signal loss increases during the transmission of communication signals from the antenna to the electronic control unit. Additionally, to connect the cable positioned between the glass panes to the control unit, the cable needs to extend outside the glass. During this process, air bubbles may form at the boundary between the cable and the adhesive PVB inside the glass, leading to durability issues.

[0091] On the other hand, when connecting the antenna and cable using a flexible printed circuit board (FPCB) and then connecting the cable to the control device, the electrode pads of the transparent antenna are bonded to the electrode pads of the FPCB via ACF (Anisotropic Conductive Film) bonding, eliminating the need for additional thick electrode pads in the antenna section. However, a drawback is that the type of FPCB needs to be increased depending on the structure of the transparent antenna. Furthermore, in a structure where the transparent antenna is placed between two layers of bonded glass, the thickness of the FPCB can be made much smaller than the thickness of the glass adhesive. Therefore, existing adhesives can be used directly, without increasing the thickness or weight of the bonded glass where the antenna is located. Additionally, signal loss issues arising from using a thin FPCB can be compensated for by adjusting the width of the conductors on the FPCB. However, in this case, the type of power supply line (PFCB) needs to be matched to the structure of the transparent antenna, especially when using a single-sided FPCB, which can cause damage due to physical vibration at the boundary where the FPCB extends from the inside to the outside of the glass.

[0092] In this invention, to solve this problem, a power supply circuit with a double-sided FPCB structure is proposed, enabling the use of a transparent antenna regardless of its placement position on the glass surface or between double-layered bonded glass. Furthermore, a power supply line FPCB structure that can be used regardless of the structure of the transparent antenna is proposed.

[0093] On the other hand, the transparent antenna module for vehicles and the vehicle antenna assembly equipped with the transparent antenna module provided in this specification can be disposed on the surface or inside of vehicle glass. Furthermore, the transparent antenna module for vehicles and the vehicle antenna assembly equipped with the transparent antenna module provided in this specification can be attached to the passenger compartment side of the vehicle glass. Regarding this point, Figure 7 The diagram shows a structure in which a transparent antenna module, configured on a vehicle glass according to the glass surface structure and the glass embedded structure, is connected to an FPCB with power supply lines. Figure 8 The diagram shows a structure in which antenna patterns formed on the front and back sides of a substrate are connected to cables via an FPCB on the passenger side of a vehicle window.

[0094] Reference Figure 7 (a) is a transparent antenna module with an antenna pattern 1100 of transparent material disposed on the surface of a single-sided glass 10. The antenna pattern 1100 can be connected to the power supply lines of a flexible substrate 1200. The single-sided glass 10 can be implemented using a single sheet of tempered glass in locations such as rear or side windows, or sunroofs of vehicles. On the other hand, Figure 7 The antenna pattern 1100 of the transparent material of (a) can also be set on the surface of a double-layered glass, such as a windshield, which is made of two pieces of glass joined together.

[0095] Reference Figure 7 (b) is a transparent antenna module disposed within a glass-embedded structure between double-layered glass 10. The double-layered glass 10 includes a first glass 10a as the inner glass and a second glass 10b as the outer glass. Similar to a vehicle's windshield, the first and second glass 10a, 10b can be bonded together using a film layer 1010 achieved with an adhesive to form the double-layered glass 10. The antenna pattern 1100 can be connected to the power supply lines of the flexible substrate 1200 and disposed between the first glass 10a and the second glass 10b, thereby forming a glass-embedded structure. Compared to a surface glass structure, the advantages of the glass-embedded structure inserted between the first glass 10a and the second glass 10b are that it protects the transparent antenna from external contamination or physical damage and also contributes to stealth characteristics.

[0096] like Figure 7As shown in (a), the glass surface structure attached to the glass surface can be arranged as follows: Figure 8 (a) or Figure 8 The structure shown in (b) is implemented. Figure 8 (a) shows a structure in which the antenna pattern 1100 is formed on the upper layer of the PET substrate 1030 in the stacked structure of the transparent antenna module. The antenna pattern 1100 can be connected to the power supply lines of the flexible substrate 1200 through the ACF bonding region BR. The PET substrate 1030 is attached to the glass 10 via the adhesive layer 1020. This is a structure in which the antenna module is attached to the surface of the glass 10 by forming the adhesive layer 1020 on the lower surface of the PET substrate 1030 on which the antenna pattern 1100 is formed.

[0097] Figure 8 (b) shows a structure in which the antenna pattern 1100 is formed on one side of the PET substrate 1030 and then attached to the surface of the glass 10 via the adhesive layer 1020. The PET substrate 1030 is attached to the glass 10 via the adhesive layer 1020. The antenna pattern 1100 can be connected to the power supply lines of the flexible substrate 1200 via the ACF bonding region BR. The PET substrate 1030 is attached to the glass 10 via the adhesive layer 1020. Figure 8 The structure of (b) is in the process of... Figure 8 The antenna module of structure (a) is attached to the glass in a flip-attached manner.

[0098] exist Figure 8 In the structure of (a), since there is no material above the antenna pattern 1100 except for a protective layer (not shown), it has the advantage of high signal efficiency. However, ACF bonding, used to establish signal connection between the antenna pattern 1100 and the flexible substrate 1200 on which power supply lines are formed, is performed in the upper region of the antenna pattern 1100. Therefore, a step is created between the surface of the glass 10 and the flexible substrate 1200. This results in the following disadvantages: additional adhesive is required to fix the flexible substrate 1200 to the surface of the glass 10, and the possibility of internal air bubbles is relatively high.

[0099] On the other hand, Figure 8 In the structure of (b), in order to attach the antenna pattern 1100 to the glass 10, the antenna pattern 1100 is positioned downwards, and a flexible substrate 1200 with power supply lines formed is disposed at the lower part of the antenna pattern 1100. Therefore, it has the following advantages: the flexible substrate 1200 with power supply lines is directly fixed to the surface of the glass 10, thus providing stability, and the step between the antenna module and the glass caused by the thickness of the flexible substrate 1200 is filled by the adhesive layer 1020. Conversely, since a thicker PET substrate layer is disposed at the upper part of the antenna pattern 1100, it may be disadvantageous from a signal efficiency point of view.

[0100] The following describes the vehicle antenna assembly provided in this manual. Figure 9a as well as Figure 9b A cross-sectional view of a vehicle antenna assembly disposed between the two panes of glass in a vehicle is shown. Figure 10 The front and back views of the flexible substrate of the vehicle antenna assembly shown in Figure 9 are illustrated. Figure 11 A cross-sectional view of the flexible substrate of the vehicle antenna assembly shown in Figure 9 is presented.

[0101] Figure 9a as well as Figure 9b The structure is an embodiment in which multiple antenna patterns 1110, 1120 are arranged between the double-layered bonded glass of a vehicle via first and second power supply lines 1210f, 1220f formed on both sides of a flexible substrate 1200. Recent vehicle antennas utilize antennas for various purposes, including LTE / 5G communication antennas, such as GPS (Global Positioning System), HI-PASS, DMB, and SDARS. Since antennas for various purposes use different frequency bands, multiple antennas need to be installed within the vehicle.

[0102] Therefore, the antennas occupy a significant amount of space within the vehicle, and their locations may be scattered, such as the rear of the roof (shark fin antenna), inside the front roof, inside the dashboard, or inside the side mirrors. Furthermore, a key issue is the complexity of the wiring for the communication cables connecting all the antennas to the signal control devices. This specification proposes a dual-sided power-supply FPCB and a double-glass insertion-type multi-antenna structure that minimizes the overall installation area and the number of power lines when installing multiple antennas.

[0103] Reference Figure 9a as well as Figure 9b This structure comprises first and second antenna patterns 1110 and 1120, which operate at different frequency bands, positioned between two layers of glass. The first and second antenna patterns 1110 and 1120 can be disposed on the surface of the first glass 10a (inner glass) or the second glass 10b (outer glass). One of the first and second antenna patterns 1110 and 1120 can be powered directly, while the other can be powered via capacitive coupling. Figure 9a as well as Figure 9b The antenna structure has the following advantages: it can be implemented as a thin film layer 1010 for bonding glass using only one PVB, and can minimize the antenna installation area and the number of power supply lines.

[0104] Reference Figures 9a to 11This specification describes the vehicle antenna assembly provided. The vehicle antenna assembly 1000 may be configured to include a first glass 10a, a second glass 10b, a film layer 1010, an antenna pattern 1100, and a flexible substrate 1200. The antenna pattern 1100 may include a first antenna pattern 1110 and a second antenna pattern 1120 disposed on different planes along the Z-axis.

[0105] Reference Figure 10 as well as Figure 11 Conductors of first and second power supply lines 1210f and 1220f are formed on the front and back sides of the flexible substrate 1200. The flexible substrate 1200 is a double-sided FPCB structure electrically connected along the inside of a through-hole V1 penetrating the dielectric region 1200d on both the front and back sides. A portion of the conductors formed by the first and second power supply lines 1210f and 1220f may be formed with bonding pads for ACF bonding with an antenna pattern. Furthermore, a pad SP for soldering cables may be formed on a portion of either side of the conductors formed by the first and second power supply lines 1210f and 1220f.

[0106] The second surface S2, which does not have pads formed in the conductors realized by the first and second power supply lines 1210f and 1220f, can have conductors formed only in the first region R1 for ACF bonding. Therefore, the conductors can be removed in the remaining regions other than the first region R1.

[0107] Figure 11 (a) and Figure 11 (b) is a top view of the front and back sides of the flexible substrate 1200 on which power supply lines are formed. Either the front or back side of the flexible substrate 1200 on which power supply lines are formed can achieve electrical connection between the ACF bonding pad of the first region R1 and the pad SP1 of the third region R3. The other side of the front or back side of the flexible substrate 1200 can have an ACF bonding pad formed only in the first region R1. The ACF bonding pads formed in the first region R1 on both sides of the flexible substrate 1200 can be electrically connected through a through-hole V1 penetrating the dielectric region 1200d. Furthermore, the first power supply line 1210f implemented by the ACF bonding pad can be ACF-bonded to the end of the antenna pattern for signal transmission via electrical contact. Alternatively, the first power supply line 1210f implemented by the ACF bonding pad can also be used as a conductive pad to achieve electrical signal connection via capacitive coupling without physical contact with the end of the antenna pattern.

[0108] Reference Figures 9a to 11This specification describes the vehicle antenna assembly provided. A first glass 10a and a second glass 10b can form a glass assembly 10. The first glass 10a can be formed facing the inner region of the vehicle, and the second glass 10b can be formed facing the outer region of the vehicle. Therefore, the first glass 10a can form the inner glass, and the second glass 10b can form the outer glass. The first glass 10a may have an opaque region 12, serving as a black mask region, disposed on one surface. The second glass 10b can be disposed opposite to the first glass 10a. The glass assembly 10 may include a transparent region 11 on which an antenna pattern 1100 is formed and an opaque region 12 on which a flexible substrate 1200 is disposed.

[0109] A thin film layer 1010 may be disposed between the first glass 10a and the second glass 10b. The first glass 10a and the second glass 10b may form a double-layer bonded glass structure bonded by the thin film layer 1010. The thin film layer 1010 may be formed of a PVB (Polyvinyl butyral) layer, but is not limited thereto and may be varied depending on the application.

[0110] A first antenna pattern 1110 may be formed on the first surface of the second glass 10b adjacent to the lower end of the Z-axis of the thin film layer 1010. The first antenna pattern 1110 may be formed from a first transparent electrode portion with a grid structure. A second antenna pattern 1120 may be formed on the second surface of the first glass 10a adjacent to the upper end of the Z-axis of the thin film layer 1010. The second antenna pattern 1120 may be formed from a second transparent electrode portion with a grid structure.

[0111] The first transparent electrode portion of the first antenna pattern 1110 and the second transparent electrode portion of the second antenna pattern 1120 can be implemented with the same grid line width and spacing. In this regard, the length and width of the first antenna pattern 1110 on the X-axis and Y-axis and the length and width of the second antenna pattern 1120 on the X-axis and Y-axis can be the same or different.

[0112] As another example, the first transparent electrode portion of the first antenna pattern 1110 and the second transparent electrode portion of the second antenna pattern 1120 can be implemented with at least one difference in grid line width and spacing. By increasing the grid line width or decreasing the spacing of the second transparent electrode portion of the second antenna pattern 1120, the current coupled through the second antenna pattern 1120 can be increased.

[0113] The length and width of the first antenna pattern 1110 along the X and Y axes can be the same as or different from the length and width of the second antenna pattern 1120 along the X and Y axes. Alternatively, the first antenna pattern 1110 can be designed to resonate at a first frequency, and the second antenna pattern 1120 at a second frequency. The length and width of the second antenna pattern 1120 along the X and Y axes can be made larger than those of the first antenna pattern 1110. This allows for a further reduction in the resonant frequency of the second antenna pattern 1120. Therefore, the operating frequency bandwidth of the antenna pattern 1100 resonating at both the first and second frequencies can be increased.

[0114] The flexible substrate 1200 may have power supply lines 1200f connected to a first transparent electrode portion or a second transparent electrode portion. At least a portion of the power supply lines 1200f may overlap with the opaque region 12. The power supply lines 1200f may be formed on both sides of the flexible substrate 1200. The power supply lines 1200f may include a first power supply line 1210f, a second power supply line 1220f, and a through hole V1 formed on both sides of the flexible substrate 1200. The flexible substrate 1200 may also include a dielectric region 1200d disposed between the first power supply line 1210f and the second power supply line 1220f. The first power supply line 1210f, a connecting line CL, and a pad SP may be disposed on the first side S1 of the dielectric region 1200d. The second power supply line 120f may be disposed on the second side S2 of the dielectric region 1200d.

[0115] A first power supply line 1210f can be formed in a first region R1 of the first surface S1 of the thin film of the flexible substrate 1200. A second power supply line 1220f can be formed in a first region R1 of the second surface S2 of the thin film of the flexible substrate 1200. The second power supply line 1220f can be formed corresponding to the first power supply line 1210f. The second power supply line 1220f can be formed overlapping the first power supply line 1210f along the Z-axis. A through hole V1 can be formed to vertically connect the first power supply line 1210f and the second power supply line 1220f. The through hole V1 can be formed in the first region R1 of the thin film of the flexible substrate 1200. The through hole V1 can be electrically connected to the first power supply line 1210f. The through hole V1 can be electrically connected to the second power supply line 1220f.

[0116] On the first surface S1 of the thin film of the flexible substrate 1200, the first ground lines 1211g and 1212g are spaced apart from the first power supply line 1210f and disposed on both sides of the first power supply line 1210f. On the second surface S2 of the thin film of the flexible substrate 1200, the second ground lines 1221g and 1222g are spaced apart from the second power supply line 1220f and disposed on both sides of the second power supply line 1220f. A grounding wire through-hole GV can be provided in the first region R1 of the thin film of the flexible substrate 1200 to vertically connect the first ground lines 1211g and 1212g with the second ground lines 1221g and 1222g.

[0117] The first power supply line 1210f and the second power supply line 1220f formed on both sides of the flexible substrate 1200 can be formed at the same location with the same width and length in the XY plane. The first power supply line 1210f and the second power supply line 1220f can be formed with a first width W1 along the X-axis direction and a first length L1 along the Y-axis direction. The power supply line 1200f can also include a connecting line CL and a pad SP.

[0118] A connecting line CL can be formed in the second region R2 of the first surface S1 of the flexible substrate 1200. The connecting line CL can be connected to the first power supply line 1210f. The connecting line CL can be formed with a second width W2 along the X-axis direction and a second length L2 along the Y-axis direction. The second width W2 of the connecting line CL can be formed to be narrower than the first width W1 of the first and second power supply lines 1210f and 1220f. As a result, the connecting line CL can be formed to have a higher impedance value than the first and second power supply lines 1210f and 1220f. The connecting line CL can be formed with a second width W2 so that the first impedance of the antenna pattern 1100 connected to the first power supply line 1210f or the second power supply line 1220f matches the second impedance of the RF cable 100c. The second length L2 of the connecting line CL can be formed to be longer than the first length L1 of the first and second power supply lines 1210f and 1220f.

[0119] A pad SP can be disposed in the third region R3 of the first surface S1 of the flexible substrate 1200. The pad SP can be connected to the interconnect line CL. The pad SP can be formed with a third width W3 along the X-axis direction and a third length L3 along the Y-axis direction. The third width W3 of the pad SP can be formed to be narrower than the first width W1 of the first and second power supply lines 1210f and 1220f. The third width W3 of the pad SP can be formed to be wider than the second width W2 of the interconnect line CL.

[0120] Grounding wires can be arranged on both sides of the flexible substrate 1200 with different structures. First grounding wires 1211g and 1212g can be arranged in the first region R1, second region R2, and third region R3 of the first surface S1 of the flexible substrate 1200. Second grounding wires 1221g and 1222g can be arranged only in the first region R1 of the second surface S2 of the flexible substrate 1200. Grounding wires can be omitted from the second region R2 and third region R3 of the second surface S2 of the flexible substrate 1200. This prevents changes in electrical performance caused by contact with undesirable metal components on the flexible substrate 1200 arranged along the first glass 10a and the thin film layer 1010.

[0121] As another example, the second grounding wires 1221g and 1222g can be disposed in the first region R1, the second region R2, and the third region R3 of the second surface S2 of the flexible substrate 1200. By also disposing grounding wires in the second region R2 and the third region R3 of the second surface S2 of the flexible substrate 1200, the grounding wire area can be expanded.

[0122] By arranging ground lines on both sides of the power supply lines on the same plane of the flexible substrate 1200, the power supply lines can be formed into a CPW (Co Planar Waveguide) structure. In the first region R1 of the first surface S1 of the flexible substrate 1200, the first power supply line 1210f and the first ground lines 1211g and 1212g can be arranged separated by a first interval G1. In the first region R1 of the second surface S2 of the flexible substrate 1200, the second power supply line 1220f and the second ground line can be arranged separated by a first interval G1. Therefore, even if the antenna pattern 1100 is connected to the first power supply line 1210f of the first surface S1 of the flexible substrate 1200 or to the second power supply line 1220f of the second surface S2, the same performance can be achieved.

[0123] In the second region R2 of the first surface S1 of the flexible substrate 1200, the connecting line CL and the first ground lines 1211g and 1212g are arranged with a second interval G2 that is wider than the first interval G1. In the third region R3 of the first surface S1 of the flexible substrate 1200, the pad SP and the first ground lines 1211g and 1212g are arranged with a third interval G3 that is wider than the first interval G1 and narrower than the second interval G2.

[0124] Reference Figure 9a , Figure 10 as well as Figure 11The second power supply line 1220f of the first region R1 on the second surface S2 of the flexible substrate 1200 can be connected to the first transparent electrode portion of the first antenna pattern 1120. The second ground lines 1221g and 1222g of the first region R1 on the second surface S2 of the flexible substrate 1200 can be connected to the ground line adjacent to the first antenna pattern 1110 via ACP bonding. The pad SP of the third region R3 on the first surface S1 of the flexible substrate 1200 can be connected to the signal line of the RF cable 100c via soldering. Thus, a signal on the first surface S1 of the flexible substrate 1200 can be applied to the first antenna pattern 1120 via the second power supply line 1220f on the second surface S2.

[0125] Reference Figure 9b , Figure 10 as well as Figure 11 The first power supply line 1210f of the first region R1 of the first surface S1 of the flexible substrate 1200 can be connected to the second transparent electrode portion of the second antenna pattern 1120. The first ground lines 1211g and 1212g of the first region R1 of the first surface S1 of the flexible substrate 1200 can be connected to the ground line adjacent to the second antenna pattern 1120 via ACP bonding. The pad SP of the third region R3 of the first surface S1 of the flexible substrate 1200 can be connected to the signal line of the RF cable 100c via soldering. Thus, a signal on the first surface S1 of the flexible substrate 1200 can be applied to the first antenna pattern 1110 via the first power supply line 1210f of the first surface S1.

[0126] Figure 12 An embodiment is shown in which a flexible substrate equipped with a double-layer power supply line is connected to an antenna pattern made of transparent material. Figure 12 (a) is as follows Figure 8 As shown in (a), in the stacked structure of the transparent antenna module, the antenna pattern 1100 is formed on the upper layer of the PET substrate 1030. The antenna pattern 1100 can be connected to the second power supply line 1220f of the flexible substrate 1200 via the second ACF bonding region BR2. The PET substrate 1030 is attached to the glass 10 via the adhesive layer 1020. This is a structure in which the antenna module is attached to the surface of the glass 10 by forming the adhesive layer 1020 on the lower surface of the PET substrate 1030 on which the antenna pattern 1100 is formed.

[0127] Figure 12 (b) is as follows Figure 8The structure shown in (b) involves forming an antenna pattern 1100 on one side of a PET substrate 1030, and then attaching the antenna pattern 1100 to the surface of a glass 10 via an adhesive layer 1020. The PET substrate 1030 is attached to the glass 10 via the adhesive layer 1020. The antenna pattern 1100 can be connected to the first power supply line 1210f of the flexible substrate 1200 via the first ACF bonding region BR1. The PET substrate 1030 is attached to the glass 10 via the adhesive layer 1020. Figure 12 The structure of (b) is in the process of... Figure 12 The antenna module of structure (a) is attached to the glass in a flip-attached manner.

[0128] Reference Figure 12 A flexible substrate 1200 with a double-layer power supply line structure consisting of the first and second power supply lines 1210f and 1220f can be used as a power supply structure for transparent antenna modules with various structures. (Refer to...) Figure 8 (a) and Figure 12 (a) may create a step between the surface of the glass 10 and the flexible substrate 1200 on which the power supply lines are formed. (Refer to...) Figure 8 (b) and Figure 12 In (b), a step of the following thickness may be formed between the surface of the glass 10 and the flexible substrate 1200 on which the power supply lines are formed. This thickness is the conductive thickness formed by using the flexible substrate 1200 on both sides to form conductors. However, the step is about 12 μm, which is very small and therefore will not affect the stability of the mechanism.

[0129] Figure 13a as well as Figure 13b An embodiment is shown where an antenna pattern formed on a PET substrate is disposed between a first thin film layer and a second thin film layer and connected to a flexible substrate. (Refer to...) Figure 13a as well as Figure 13b The double-layered glass can be made by hot-pressing two glass sheets, the first and second glass sheets 10a and 10b, with a thin film layer 1010 such as PVB. To place the transparent material antenna pattern 1100 between the double-layered glass sheets, the first and second glass sheets 10a and 10b and the first and second thin film layers 1010a and 1010b are used. The transparent material antenna pattern 1100 is disposed between the first thin film layer 1010a and the second thin film layer 1010b, and the first and second glass sheets 10a and 10b are bonded to the outside of the first and second thin film layers 1010a and 1010b.

[0130] The antenna pattern 1100 of the transparent material disposed between the double-layered glass does not require an additional adhesive layer for adhering the module to the glass surface. This is because, during the process of bonding the double-layered glass, the antenna pattern 1100 of the transparent material is fixed between the first glass 10a and the second glass 10b by the first and second thin film layers 1010a and 1010b.

[0131] exist Figure 13a In this configuration, the antenna pattern 1100 of the transparent material is arranged in a direction toward the first glass 10a, which serves as the inner glass. The antenna pattern 1100 is connected to the first power supply line 1220f of the flexible substrate 1200 via the first ACF bonding region BR1 on the same surface as the first surface where the pad SP is formed. The flexible substrate 1200 is fixed to the side of the first glass 10a, and the RF cable 100c is soldered to the pad SP.

[0132] exist Figure 13b In this configuration, the transparent material antenna pattern 1100 is arranged in a direction toward the second glass 10b, which serves as the outer glass. The antenna pattern 1100 is connected to the second power supply line 1220f via a second ACF bonding region BR2 on a second surface different from the first surface where the pad SP is formed. The flexible substrate 1200 is fixed to the side of the first glass 10a, and the RF cable 100c is soldered to the pad SP.

[0133] Reference Figure 13a as well as Figure 13b Regardless of the structure of the transparent antenna module or the orientation of the antenna pattern 1100 with transparent material, the transparent antenna module can be configured between two layers of bonded glass via a flexible substrate 1200 with a double-sided power supply structure. Figure 13a as well as Figure 13b The embodiment described is an example of a structure in which an RF cable 100c is fixed to the passenger compartment side surface of the first glass 10a, which serves as the inner glass of a vehicle; however, the invention is not limited thereto. A structure in which an RF cable 100c connected to a power supply line of the flexible substrate 1200 is fixed to the outer surface of the second glass 10b, which serves as the outer glass, is also applicable.

[0134] Figure 14a as well as Figure 14b An embodiment of a structure in which an antenna pattern formed on a PET substrate in a single-layer glass structure is configured between a thin film layer and an additional adhesive layer and connected to a flexible substrate is shown. (Refer to...) Figure 14a as well as Figure 14bThis eliminates the steps caused by the thickness of the antenna pattern 1100 and the flexible substrate 1200 when the antenna pattern 1100 is disposed on the surface of the glass 10 using the flexible substrate 1200. Therefore, by eliminating the steps caused by the thickness of the antenna pattern 1100 and the flexible substrate 1200, the flexible substrate 1200 can be stably fixed to the antenna assembly.

[0135] Reference Figure 14a The PET substrate 1030 with the antenna pattern 1100 formed thereon can be attached to the glass 10 via the adhesive layer 1040. The adhesive layer 1040 can be configured to include a first adhesive region 1040R1 and a second adhesive region 1040R2. The first adhesive region 1040R1 can be disposed between the PET substrate 1030 and the glass 10b to attach the PET substrate 1030 and the glass 10. The second adhesive region 1040R2 can be disposed between the flexible substrate 1200 and the glass 10 to attach the flexible substrate 1200 and the glass 10. The second power supply line 1220f of the flexible substrate 1200 can be connected to the antenna pattern 1100 via the second ACF bonding region BR2.

[0136] Reference Figure 14b The PET substrate 1030 with the antenna pattern 1100 formed thereon can be attached to the glass 10 via the adhesive layer 1040. The adhesive layer 1040 can be configured to include a first adhesive region 1040R1 and a second adhesive region 1040R2. The first adhesive region 1040R1 can be disposed between the antenna pattern 1100 and the glass 10 to attach the antenna pattern 1100 and the glass 10. The second adhesive region 1040R2 can be disposed between the flexible substrate 1200 and the glass 10 to attach the flexible substrate 1200 and the glass 10. The first power supply line 1210f of the flexible substrate 1200 can be connected to the antenna pattern 1100 via the first ACF bonding region BR1.

[0137] Reference Figure 14a as well as Figure 14b The antenna pattern 1100 and the flexible substrate 1200 can be stably fixed to the glass surface, thereby eliminating steps caused by the height difference between the surface of the glass 10 and the flexible substrate 1200. Furthermore, it can prevent air bubbles that may occur when the antenna pattern 1100 is attached to the glass via the adhesive layer 1040.

[0138] Figure 15a as well as Figure 15b An embodiment of a double-layer bonded glass structure is shown, in which an antenna pattern formed on a PET substrate is configured between a thin film layer and an additional adhesive layer and connected to a flexible substrate. (See reference...) Figure 15a as well as Figure 15bThis eliminates the steps caused by the thickness of the antenna pattern 1100 and the flexible substrate 1200 when the antenna pattern 1100 is disposed on the surface of the glass 10 using the flexible substrate 1200. Therefore, by eliminating the steps caused by the thickness of the antenna pattern 1100 and the flexible substrate 1200, the flexible substrate 1200 can be stably fixed to the antenna assembly.

[0139] Reference Figure 15a The PET substrate 1030, on which the antenna pattern 1100 is formed, can be attached to the second glass 10b via an adhesive layer 1040. The adhesive layer 1040 can be configured to include a first adhesive region 1040R1 and a second adhesive region 1040R2. The first adhesive region 1040R1 can be disposed between the PET substrate 1030 and the second glass 10b for attaching the PET substrate 1030 and the second glass 10b. The second adhesive region 1040R2 can be disposed between the flexible substrate 1200 and the second glass 10b for attaching the flexible substrate 1200 and the second glass 10b. The first power supply line 1210f of the flexible substrate 1200 can be connected to the antenna pattern 1100 via a first ACF bonding region BR1.

[0140] Reference Figure 15b The PET substrate 1030 with the antenna pattern 1100 formed thereon can be attached to the first glass 10a via the adhesive layer 1050. The adhesive layer 1050 can be configured to include a first adhesive region 1050R1 and a second adhesive region 1050R2. The first adhesive region 1050R1 can be disposed between the antenna pattern 1100 and the first glass 10a to attach the antenna pattern 1100 and the first glass 10a. The second adhesive region 1050R2 can be disposed between the flexible substrate 1200 and the first glass 10a to attach the flexible substrate 1200 and the first glass 10a. The first power supply line 1210f of the flexible substrate 1200 can be connected to the antenna pattern 1100 via the first ACF bonding region BR1.

[0141] Reference Figure 15a as well as Figure 15b The antenna pattern 1100 and the flexible substrate 1200 can be stably fixed to the glass surface, thereby eliminating steps caused by the height difference between the glass surface and the flexible substrate 1200. Furthermore, it can prevent air bubbles that may occur when the antenna pattern 1100 is attached to the glass via the adhesive layers 1040 and 1050.

[0142] Figure 15a as well as Figure 15bThe structure in which the flexible substrate 1200 is attached to the inner surfaces of the first and second glass 10a and 10b can also be achieved using a flexible substrate 1200 with a double-sided power supply structure. Therefore, it is possible to achieve this without distinguishing between the structure of the antenna assembly or the type, direction, location, or orientation of the power supply lines of the flexible substrate 1200. Figure 15a as well as Figure 15b The structure.

[0143] Furthermore, since the antenna pattern 1100 of the transparent material can be stably fixed as long as it is attached to the inner surfaces of the first and second glass layers 10a and 10b when it is disposed inside the double-layered bonded glass, durability is increased. Also, it prevents bubbles that may form at the interface region or steps between the thin film layer 1010 and the antenna pattern 1100 and the power supply lines. Figure 15a as well as Figure 15b In this structure, only one thin film layer 1010 is used to attach the first and second glass 10a and 10b, thus reducing the manufacturing cost and simplifying the process.

[0144] Figure 16a as well as Figure 16b An embodiment of a structure in which at least one of the first and second antenna patterns in a double-layer bonded glass structure is formed on a PET substrate and connected to a flexible substrate by a thin film layer and an additional adhesive layer is shown. Figure 16a It is a structure in which the first antenna pattern 1110 is disposed on the PET substrate 1030 and the PET substrate 1030 is attached to the second glass 10b through the adhesive layer 1040. Figure 16b The second antenna pattern 1120 is disposed on the PET substrate 1030 and the PET substrate 1030 is attached to the first glass 10b through the adhesive layer 1050.

[0145] Reference Figure 16a The PET substrate 1030, on which the first antenna pattern 1110 is formed, can be attached to the second glass 10b via an adhesive layer 1040. The adhesive layer 1040 can be configured to include a first adhesive region 1040R1 and a second adhesive region 1040R2. The first adhesive region 1040R1 can be disposed between the PET substrate 1030 and the second glass 10b for attaching the PET substrate 1030 and the second glass 10b. The second adhesive region 1040R2 can be disposed between the flexible substrate 1200 and the second glass 10b for attaching the flexible substrate 1200 and the second glass 10b. The second thickness of the second adhesive region 1040R2 can be formed to be thicker than the first thickness of the first adhesive region 1040R1. The second power supply line 1220f of the flexible substrate 1200 can be connected to the first antenna pattern 1110 via a second ACF bonding region BR2.

[0146] Reference Figure 16b The PET substrate 1030, on which the second antenna pattern 1120 is formed, can be attached to the first glass 10a via an adhesive layer 1050. The adhesive layer 1050 can be configured to include a first adhesive region 1050R1 and a second adhesive region 1050R2. The first adhesive region 1050R1 can be disposed between the PET substrate 1030 and the first glass 10a for attaching the PET substrate 1030 and the first glass 10a. The second adhesive region 1050R2 can be disposed between the flexible substrate 1200 and the first glass 10a for attaching the flexible substrate 1200 and the first glass 10a. The second thickness of the second adhesive region 1050R2 can be formed to be thicker than the first thickness of the first adhesive region 1050R1. The first power supply line 1210f of the flexible substrate 1200 can be connected to the second antenna pattern 1120 via a first ACF bonding region BR1.

[0147] Reference Figure 16a as well as Figure 16b The antenna pattern 1100 and the flexible substrate 1200 can be stably fixed to the glass surface, thereby eliminating steps caused by the height difference between the glass surface and the flexible substrate 1200. Furthermore, it can prevent air bubbles that may occur when the antenna pattern 1100 is attached to the glass via the adhesive layers 1040 and 1050.

[0148] The structure of the flexible substrate 1200 attached to the inner surfaces of the first and second glass 10a and 10b can also be achieved using a flexible substrate 1200 with a double-sided power supply structure. Therefore, it is possible to achieve this without distinguishing the structure of the antenna assembly or the type, direction, location, or orientation of the power supply lines of the flexible substrate 1200. Figure 16a as well as Figure 16b The structure.

[0149] Furthermore, when the first and second antenna patterns 1110 and 1120 of transparent material are disposed inside the double-layered bonded glass, they can be stably fixed as long as they adhere to the inner surfaces of the first and second glass layers 10a and 10b, thus increasing durability. Additionally, it can prevent bubbles that may form at the interface region or steps between the thin film layer 1010 and the first and second antenna patterns 1110 and 1120 and the power supply lines. Figure 16a as well as Figure 16b In this structure, only one thin film layer 1010 is used to attach the first and second glass 10a and 10b, thus reducing the manufacturing cost and simplifying the process.

[0150] On the other hand, in the vehicle antenna assembly provided in this specification, power supply lines configured as a flexible substrate can apply signals to multiple antenna elements. Regarding this point, Figure 17The diagram shows a structure in which first and second antenna elements, including first and second antenna patterns stacked on the Z-axis, are spaced apart on the X-axis.

[0151] Reference Figure 9a , Figure 9b as well as Figure 17 The first antenna element 1100a can be configured to include first and second antenna patterns 1110 and 1120 stacked on the Z-axis. The second antenna element 1100b can be configured to include first and second antenna patterns 1110 and 1120 stacked on the Z-axis. Multiple-input multiple-output (MIMO) operation can be performed at a first frequency in the same frequency band by the first antenna pattern 1110 of the first antenna element 1100a and the first antenna pattern 1110 of the second antenna element 1100b. Furthermore, multiple-input multiple-output (MIMO) operation can be performed at a second frequency in the same frequency band by the second antenna pattern 1120 of the first antenna element 1100a and the second antenna pattern 1210 of the second antenna element 1100b.

[0152] Figure 18a as well as Figure 18b It shows the formation with Figure 17 The structure of the flexible substrate for the power supply lines connecting the first and second antenna elements. Figure 18a (a) and Figure 18a (b) is a front view and a back view of a flexible substrate 1200 having only one through hole V1. Figure 18b (a) and Figure 18b (b) is a front view and a back view of the flexible substrate 1200 having the first and second through holes V1 and V2 formed therein. (Refer to...) Figure 18a as well as Figure 18b The first power supply line 1210f and the third power supply line 1230f can be arranged on the first surface S1 of the flexible substrate, and the second power supply line 1220f and the fourth power supply line 1240f can be arranged on the second surface S2.

[0153] Reference Figure 17 as well as Figure 18b The flexible substrate 1200 can be configured to supply power to the first antenna element 1100a and the second antenna element 1100b disposed adjacent to the first antenna element 1100a. The flexible substrate 1200 may further include: a third power supply line 1230f, which is spaced apart from the first power supply line 1210f on the first surface S1; and a fourth power supply line 1240f, which is spaced apart from the second power supply line 1220f on the second surface S2.

[0154] The first power supply line 1210f can be connected to the pad SP of the third region R3 via the connection line CL of the second region R2 on the first surface S1. The third power supply line 1230f can be connected to the second pad SP2 of the third region R3 via the second connection line CL2 of the second region R2 on the first surface S1. The connection line CL and the second connection line CL2 can be formed parallel with the same width and length. The pad SP and the second pad SP2 can be formed parallel with the same width and length.

[0155] Reference Figure 18a The power supply line 1200f can be configured to include a through hole V1 and a second through hole V2. The through hole V1 can be formed to vertically connect the first power supply line 1210f and the second power supply line 1220f. This allows the first power supply line 1210f and the second power supply line 1220f to be electrically connected. The second through hole V2 can be formed to vertically connect the third power supply line 1230f and the fourth power supply line 1240f. This allows the third power supply line 1230f and the fourth power supply line 1240f to be electrically connected. Therefore, the flexible substrate 1200 that supplies power to multiple antenna elements can be fully connected to the upper and lower first and second antenna patterns 1110 and 1120.

[0156] Reference Figure 9a , Figure 10 , Figure 11 , Figure 17 as well as Figure 18a The second power supply line 1220f can be connected to the first antenna pattern 1110 of the first antenna element 1100a. The fourth power supply line 1240f can be connected to the first antenna pattern 1110 of the second antenna element 1100b. (Refer to...) Figure 9b , Figure 10 , Figure 11 Figure 16 and Figure 17 The first power supply line 1210f can be connected to the second antenna pattern 1120 of the first antenna element 1100a. The third power supply line 1240f can be connected to the second antenna pattern 1110 of the second antenna element 1100b.

[0157] Reference Figure 18b The power supply line 1200f can be configured to include only a through hole V1. The through hole V1 can be formed to vertically connect the first power supply line 1210f and the second power supply line 1220f. This allows the first power supply line 1210f and the second power supply line 1220f to be electrically connected. The third power supply line 1230f and the fourth power supply line 1240f can be disposed on both sides of the flexible substrate 1200 without a through hole. Therefore, the third power supply line 1230f can be formed not to be connected to the fourth power supply line 1240f.

[0158] Reference Figures 9a to 11 , Figure 17 as well as Figure 18b Any one of the multiple antenna elements can be formed as Figure 9a The first structure, another is formed as Figure 9b The second structure. In this regard, the second power supply line 1210f on the second surface S2 of the flexible substrate 1200 can be connected to the first antenna pattern 1110 of the first antenna element 1100a. The third power supply line 1230f on the first surface S1 of the flexible substrate 1200 can be connected to the second antenna pattern 1120 of the second antenna element 1100b. Therefore, interference between the first antenna element 1100a and the second antenna element 1100b can be reduced by making their power supply methods different.

[0159] On the other hand, in the vehicle antenna assembly provided in this specification, the resonant frequencies of the antenna patterns on the Z-axis can be designed to maintain sufficient spacing. To design the resonant frequencies of the antenna patterns to maintain sufficient spacing, the antenna patterns need to operate independently. Regarding this, Figure 19a as well as Figure 19b An antenna assembly for a vehicle, including the spaced-out antenna patterns provided in the embodiments, is shown.

[0160] Reference Figure 19a as well as Figure 19b Between the double-layered bonded glass, one of the first and second antenna patterns 1110 and 1120b can be configured spaced apart from the other. The second antenna pattern 1120b can be configured spaced apart from the first antenna pattern 1110 in one axial direction (Y-axis direction). The end of the second antenna pattern 1120 can be connected to the conductive pattern 1130.

[0161] If the operating frequencies of the first and second antenna patterns 1110 and 1120b overlap, and the spacing between the first antenna pattern 1110 and the second antenna pattern 1120b is not sufficiently separated, interference between signals may occur. Figure 9a as well as Figure 9b The first antenna pattern 1110 and the second antenna pattern 1120 are stacked in the Z-axis direction by an amount corresponding to the thickness of the thin film layer 1010, and when they overlap in the XY plane, interference may occur between the signals of the first and second antenna patterns 1110 and 1120.

[0162] Therefore, when the operating frequencies of the first and second antenna patterns 1110 and 1120, i.e., the frequency difference between the first and second antennas, exceed a certain frequency, the first and second antenna patterns 1110 and 1120 can be arranged overlappingly in the XY plane. Conversely, when the operating frequencies of the first and second antenna patterns 1110 and 1120, i.e., the frequency difference between the first and second antennas, are less than a certain frequency, the first and second antenna patterns 1110 and 1120 can be arranged at intervals in the XY plane.

[0163] on the other hand, Figure 20 The structure showing the arrangement of a second antenna pattern spaced apart and connected to a conductive pattern is illustrated. (Refer to...) Figure 19b as well as Figure 20 The conductive pattern 1130, which is connected to the electrode pad EP2, can be connected to the second antenna pattern 1120b. The first antenna pattern 1110 can be configured spaced apart from the second antenna pattern 1120b on the Y-axis. The first antenna pattern 1110 can be configured to overlap with the conductive pattern 1130 on the XY plane.

[0164] To minimize transmission loss, the conductive pattern 1130 can be formed using the same conductor and process as the first and second antenna patterns 1110 and 1120b. The minimum linewidth of the conductive pattern 1130 can be formed to be 500 μm or more. One end of the conductive pattern 1130 is connected to the second antenna pattern 1120b, and the other end is connected to the second antenna pattern 1120b.

[0165] On the other hand, the structure in which the transparent antenna, including the first and second antenna patterns 1110 and 1120, is attached to the inner surface of the double-layered glass and connected to the flexible substrate 1200 can minimize the influence from surrounding structures such as the vehicle's metal frame. Therefore, it has the advantage of reducing the design sensitivity of vehicle antenna assemblies containing transparent antenna patterns. Furthermore, since the transparent antenna patterns and power supply method can employ either direct power supply or coupled power supply, it has the advantage of enabling multi-antenna designs without being limited by the aforementioned antenna configuration structure.

[0166] Reference Figures 19a-20 The vehicle antenna assembly 1000 may further include first and second antenna patterns 1110 and 1120b, and a conductive pattern 1130. The conductive pattern 1130 may be connected to one end of the second antenna pattern 1120b. The second antenna pattern 1120b may be offset relative to the first antenna pattern 1110 in one axial direction. The power supply line 1200f of the flexible substrate 1200 may be connected to the first transparent electrode portion of the first antenna pattern 1110 or the electrode pads EP1 and EP2 of the conductive pattern 1130.

[0167] Reference Figure 19a as well as Figure 20 The second power supply line 1220f on the second surface S2 of the flexible substrate 1200 can be connected to the first electrode pad EP1 at the end of the first transparent electrode portion of the first antenna pattern 1110. (Refer to...) Figure 19b as well as Figure 20 The first power supply line 1210f on the first surface S1 of the flexible substrate 1200 can be connected to the second electrode pad EP2 at the end of the conductive pattern 1130. The conductive pattern 1130 can be connected to one end of the second antenna pattern 1120b.

[0168] The transparent antenna module and the vehicle antenna assembly equipped with the transparent antenna module provided in this specification have been described above. The technical effects of the transparent antenna module and the vehicle antenna assembly equipped with the transparent antenna module provided in this specification can be summarized as follows, but are not limited thereto.

[0169] According to this specification, a vehicle antenna assembly having a transparent antenna module with a structure configurable between two layers of bonded glass is provided, as well as a method for manufacturing the vehicle antenna assembly.

[0170] According to this specification, by stacking multiple antenna patterns in a double-layered bonded glass structure, the bandwidth characteristics of a transparent antenna can be improved while increasing the freedom of antenna design.

[0171] According to this specification, by overlapping multiple antenna patterns arranged on different layers in a double-layered bonded glass structure, the bandwidth characteristics of a transparent antenna can be improved while increasing the freedom of antenna design.

[0172] According to this specification, by spacing multiple antenna patterns arranged on different layers in a double-layered bonded glass structure, interference between transparent antennas can be reduced while increasing the freedom of antenna design.

[0173] According to this specification, a vehicle antenna assembly with a structure in which the transparent antenna and power supply line are not visible to the naked eye and the transparent antenna is protected from damage by glass is provided.

[0174] The scope of applicability of this specification should become clear from the following detailed description. However, those skilled in the art will readily understand the spirit and various modifications and alterations within the scope of this specification, and therefore it should be understood that the detailed description and specific embodiments, such as the preferred embodiments described herein, are merely illustrative. The scope of this specification should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of this specification are included within the scope of this specification.

Claims

1. An antenna assembly for a vehicle, comprising: The first glass has an opaque area on one side; The second glass is arranged opposite to the first glass; A thin film layer disposed between the first glass and the second glass; The first antenna pattern is disposed on the first surface of the second glass adjacent to the lower end of the thin film layer and is formed by the first transparent electrode portion of the grid structure; The second antenna pattern is disposed on the second surface of the first glass adjacent to the upper end of the thin film layer and is formed by the second transparent electrode portion of the grid structure; as well as A flexible substrate having power supply lines connected to either the first transparent electrode portion or the second transparent electrode portion. At least a portion of the power supply line is configured to overlap with the opaque area.

2. The antenna assembly according to claim 1, wherein, The first glass is formed facing the inner region of the vehicle, and the second glass is formed facing the outer region of the vehicle. The first glass and the second glass form a double-layered bonded glass structure bonded by the thin film layer. The film layer is formed of PVB, or polyvinyl butyral.

3. The antenna assembly according to claim 1, wherein, The power supply line includes: The first power supply line is formed in the first region of the first surface of the thin film of the flexible substrate; A second power supply line is formed in the first region, overlapping the first power supply line on the second surface of the thin film; and A through hole is formed to vertically connect the first power supply line and the second power supply line.

4. The antenna assembly according to claim 3, wherein, On the first surface of the thin film, the first grounding wire is spaced apart from the first power supply wire and disposed on both sides of the first power supply wire. In the first region of the second surface of the thin film, the second grounding wire is spaced apart from the second power supply wire and disposed on both sides of the second power supply wire. A grounding wire through-hole is provided in the first region to vertically connect the first grounding wire and the second grounding wire.

5. The antenna assembly according to claim 4, wherein, The first power supply line and the second power supply line are formed with a first width along the X-axis direction and a first length along the Y-axis direction. The power supply line also includes: A connecting line, which has a second width along the X-axis and a second length along the Y-axis in the second region of the first surface; and The pads, in the third region of the first surface, are formed with a third width along the X-axis and a third length along the Y-axis. The second width is narrower than the first width, and the second length is longer than the first length. The third width is formed to be narrower than the first width and wider than the second width.

6. The antenna assembly according to claim 5, wherein, The first grounding wire is disposed in the first region, the second region, and the third region of the first surface. The second grounding wire is only configured in the first region of the second surface. In the first region, the first power supply line and the first grounding line are arranged apart by a first interval. In the first region, the second power supply line and the second grounding line are arranged apart from the first interval. In the second region, the connecting line and the first grounding line are configured with a second interval that is wider than the first interval.

7. The antenna assembly according to claim 3, wherein, The second power supply line of the first region on the second surface of the flexible substrate is connected to the first transparent electrode portion of the first antenna pattern. The second grounding wire of the first region on the second surface is connected to the grounding wire adjacent to the first antenna pattern via ACP bonding. The pads in the third region of the first surface are connected to the signal lines of the RF cable by soldering.

8. The antenna assembly according to claim 3, wherein, The first power supply line of the first region on the first surface of the flexible substrate is connected to the second transparent electrode portion of the second antenna pattern. The first grounding wire of the first region of the first surface is connected to the grounding wire adjacent to the second antenna pattern via ACP bonding. The pads in the third region of the first surface are connected to the signal lines of the RF cable by soldering.

9. The antenna assembly according to claim 3, wherein, The PET substrate with the first antenna pattern is attached to the second glass via an adhesive layer. The adhesion layer includes: A first adhesion region is disposed between the PET substrate and the second glass; and The second adhesion region is disposed between the flexible substrate and the second glass. The second thickness of the second adhesion region is formed to be thicker than the first thickness of the first adhesion region. The second power supply line of the flexible substrate is connected to the first antenna pattern.

10. The antenna assembly according to claim 3, wherein, The PET substrate with the second antenna pattern is attached to the second glass via an adhesive layer. The adhesion layer includes: A first adhesion region is disposed between the PET substrate and the first glass; and The second adhesion region is disposed between the flexible substrate and the first glass. The second thickness of the second adhesion region is formed to be thicker than the first thickness of the first adhesion region. The first power supply line of the flexible substrate is connected to the second antenna pattern.

11. The antenna assembly according to claim 3, wherein, The power supply line is configured to supply power to the first antenna element and the second antenna element disposed adjacent to the first antenna element. The power supply line further includes: a third power supply line, which is spaced apart from the first power supply line on the first side of the flexible substrate; and a fourth power supply line, which is spaced apart from the second power supply line on the second side.

12. The antenna assembly according to claim 11, wherein, The first power supply line is connected to the pad in the third region via a connection line in the second region of the first surface. The third power supply line is connected to the second pad in the third region via the second connection line in the second region of the first surface.

13. The antenna assembly according to claim 11, wherein, The power supply line also includes a second through hole, which is formed to vertically connect the third power supply line and the fourth power supply line.

14. The antenna assembly of claim 11, wherein, The second power supply line is connected to the first antenna pattern of the first antenna element. The fourth power supply line is connected to the first antenna pattern of the second antenna element.

15. The antenna assembly according to claim 11, wherein, The first power supply line is connected to the second antenna pattern of the first antenna element. The third power supply line is connected to the second antenna pattern of the second antenna element.

16. The antenna assembly of claim 11, wherein, The first power supply line is connected to the second power supply line through the through hole. The third power supply line is configured not to be connected to the fourth power supply line.

17. The antenna assembly of claim 16, wherein, The second power supply line on the second side of the flexible substrate is connected to the first antenna pattern of the first antenna element. The third power supply line on the first side of the flexible substrate is connected to the second antenna pattern of the second antenna element.

18. The antenna assembly according to claim 1, wherein, The antenna assembly also includes a conductive pattern connected to one end of the second antenna pattern. The second antenna pattern is offset relative to the first antenna pattern in one axial direction. The power supply line is connected to the first transparent electrode portion or the electrode pad of the conductive pattern.

19. The antenna assembly according to claim 17, wherein, The second power supply line on the second surface of the flexible substrate is connected to the first electrode pad at the end of the first transparent electrode portion that forms the first antenna pattern.

20. The antenna assembly of claim 18, wherein, The first power supply line on the first surface of the flexible substrate is connected to the second electrode pad at the end of the conductive pattern.

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