阅读说明：本技术 显示设备和天线组件 (Display device and antenna assembly ) 是由 吴尚基 洪尚皡 李亨镛 于 2018-12-19 设计创作，主要内容包括：本公开涉及一种显示装置和天线组件,该显示装置包括：显示器；第一电路板,包括至少一个电子部件,该至少一个电子部件被配置为处理图像信号以在所述显示器上显示图像；第二电路板,包括至少一个天线,所述至少一个天线被配置为发送和接收射频RF信号以在所述显示装置和外部装置之间进行通信；以及间隔物,设置在所述第一电路板和所述第二电路板之间,并且被配置为使所述第一电路板和所述第二电路板彼此间隔开。因此,基于显示装置的结构,通过简单的设计改善了天线中的辐射性能。因此,基于显示装置的结构,通过简单的设计改善了天线中的辐射性能。(The present disclosure relates to a display device and an antenna assembly, the display device including: a display; a first circuit board comprising at least one electronic component configured to process an image signal to display an image on the display; a second circuit board comprising at least one antenna configured to transmit and receive Radio Frequency (RF) signals to communicate between the display device and an external device; and a spacer disposed between the first circuit board and the second circuit board and configured to space the first circuit board and the second circuit board from each other. Accordingly, radiation performance in the antenna is improved by a simple design based on the structure of the display device. Accordingly, radiation performance in the antenna is improved by a simple design based on the structure of the display device.)

1. A display device, comprising:

a display;

a first circuit board comprising at least one electronic component configured to process an image signal to display an image on the display;

a second circuit board comprising at least one antenna configured to transmit and receive Radio Frequency (RF) signals to communicate between the display device and an external device; and

a spacer disposed between the first circuit board and the second circuit board and configured to space the first circuit board and the second circuit board from each other.

2. The display device according to claim 1, further comprising: a communication module disposed in the second circuit board and configured to process the RF signal.

3. The display device according to claim 1, further comprising: a chassis disposed at a back of the display,

wherein the first circuit board is fixed to the chassis with a surface of the first circuit board opposite to a surface on which the second circuit board is provided facing the chassis.

4. The display device according to claim 1, wherein the spacer comprises:

a housing including an insulator and configured to support facing surfaces of the first and second circuit boards; and

a plurality of signal transmission pins disposed in the housing and configured to transmit signals between the first circuit board and the second circuit board.

5. The display device according to claim 4,

the second circuit board is detachably disposed in the first circuit board through the spacer,

the plurality of signal transmission pins are exposed to a first side of the housing and a second side opposite to the first side, an

The exposed portions of the plurality of signal transmission pins are coupled to both the first circuit board and the second circuit board based on the second circuit board being mounted to the first circuit board.

6. The display device according to claim 1,

the first circuit board includes an edge region disposed downward when the display device is in a mounted state, an

The second circuit board is disposed in the edge region of the first circuit board.

7. The display device according to claim 1,

the antenna is disposed in the first surface of the second circuit board, an

A second surface of the second circuit board opposite the first surface at least partially faces the first circuit board with the spacer interposed therebetween.

8. The display device according to claim 7, wherein the antenna is provided on a region of the first surface of the second circuit board, the region being opposite to a region of the second surface of the second circuit board that does not face the first circuit board.

9. An antenna assembly for a display device, comprising:

a sub-board including at least one antenna configured to transmit and receive Radio Frequency (RF) signals to communicate between the display device and an external device; and

a spacer disposed between a main board and the sub board and configured to space the main board and the sub board from each other, the main board being provided with at least one electronic component for processing an image signal to display an image on the display device.

10. The antenna assembly of claim 9, further comprising: a communication module disposed in the daughter board and configured to process the RF signal.

11. The antenna assembly of claim 9, wherein the spacer comprises:

a housing including an insulator and configured to support facing surfaces of the main board and the sub board; and

a plurality of signal transmission pins disposed in the housing and configured to transmit signals between the main board and the daughter board.

12. The antenna assembly of claim 11,

the sub-board is detachably disposed in the first circuit board through the spacer,

the plurality of signal transmission pins are exposed to a first side of the housing and a second side opposite to the first side, an

The exposed portions of the plurality of signal transmission pins are coupled to both the motherboard and the daughter board based on the daughter board being mounted to the motherboard.

13. The antenna assembly of claim 9,

the main board includes an edge region disposed downward when the display device is in a mounted state, an

The sub-board is disposed in an edge region of the main board.

14. The antenna assembly of claim 9,

the antenna is disposed in the first surface of the sub-board, an

A second surface of the second circuit board opposite the first surface at least partially faces the first circuit board with the spacer interposed therebetween.

15. The antenna assembly of claim 14, wherein the antenna is disposed on a region of the first surface of the second circuit board that is opposite a region of the second surface of the second circuit board that does not face the first circuit board.

Technical Field

The present disclosure relates to a display device and an antenna assembly, and more particularly, to a display device and an antenna assembly including an antenna and a communication module for transmitting and receiving Radio Frequency (RF) signals.

Background

A display device such as a Television (TV) supports a wireless communication function such as Wi-Fi.

The components of wireless communication include an antenna for transmitting and receiving signals and a communication module for processing signals, wherein the antenna may be provided as a single module combined with the communication module or a plurality of modules separated from the communication module in the display device.

The antenna is generally designed to be placed outside the display device to ensure its radiation performance, and is connected to a separate communication module or a main board through a cable.

However, in the case where the antenna is separately placed outside the device, productivity is lowered in the manufacturing process, and it is difficult to avoid performance degradation due to loss of the cable connection structure itself.

Further, there is a concern that the antenna and the communication module are manufactured as a single module due to the design and structure of the display device itself, and when the antenna is designed to be placed inside the display device, a reduction in performance is inevitable.

Disclosure of Invention

[ problem ] to provide a method for producing a semiconductor device

The present disclosure is conceived to solve the above-described problems, and provides a display device and an antenna assembly in which radiation performance of an antenna is ensured and no design and structure restrictions are imposed in a manufacturing process.

[ technical solution ] A

According to an embodiment of the present disclosure, a display device includes: a display; a first circuit board comprising at least one electronic component configured to process an image signal to display an image on the display; a second circuit board comprising at least one antenna configured to transmit and receive Radio Frequency (RF) signals to communicate between the display device and an external device; and a spacer disposed between the first circuit board and the second circuit board and configured to space the first circuit board and the second circuit board from each other. Accordingly, radiation performance in the antenna is improved by a simple design based on the structure of the display device.

The display device may further include a communication module disposed in the second circuit board and configured to process the RF signal. Accordingly, the MOB type second circuit board mounted with the antenna and the communication module is coupled to the first circuit board spaced apart from the first circuit board, thereby improving the efficiency of the manufacturing process.

The display device may further include a chassis disposed at a rear surface of the display, wherein a first circuit board is fixed to the chassis, and a surface of the first circuit board opposite to a surface on which the second circuit board is disposed faces the chassis.

The spacer may include: a housing including an insulator and configured to support facing surfaces of the first and second circuit boards; and a plurality of signal transmission pins. The second circuit board may be detachably disposed in the first circuit board by a spacer, the plurality of signal transmission pins may be exposed to a first side of the housing and a second side opposite to the first side, and the exposed portions of the plurality of signal transmission pins may be coupled to both the first circuit board and the second circuit board based on the second circuit board being mounted to the first circuit board. Thus, both structural support and electrical connection are achieved by simple coupling components (i.e., spacers).

The first circuit board may include an edge region disposed downward when the display device is in a mounted state, and the second circuit board is disposed in the edge region of the first circuit board. Therefore, the antenna is placed downward in the display device, thereby having a structure suitable for improving radiation performance.

The antenna may be disposed in a first surface of the second circuit board, and a second surface of the second circuit board opposite the first surface may at least partially face the first circuit board with the spacer located between the first and second circuit boards. The antenna may be disposed on a region of the first surface of the second circuit board that is opposite to a region of the second surface of the second circuit board that does not face the first circuit board.

According to an embodiment of the present disclosure, an antenna assembly of a display device includes: a sub board including at least one antenna configured to transmit and receive a Radio Frequency (RF) signal to communicate between the display device and an external device; and a spacer disposed between the main board and the sub board and configured to space the main board and the sub board from each other, the main board being provided with at least one electronic component for processing an image signal to display an image on the display device. Accordingly, radiation performance in the antenna is improved by a simple design based on the structure of the display device.

The antenna assembly may also include a communication module disposed in the daughter board and configured to process the RF signal. Accordingly, the MOB type second circuit board mounted with the antenna and the communication module is coupled to the first circuit board spaced apart from the first circuit board, thereby improving the efficiency of the manufacturing process.

The spacer may include: a housing including an insulator and configured to support facing surfaces of the main board and the sub board; and a plurality of signal transmission pins disposed in the housing and configured to transmit signals between the main board and the sub board. Thus, both structural support and electrical connection are achieved by simple coupling components (i.e., spacers).

The daughter board may be detachably disposed in the first circuit board through a spacer, the plurality of signal transmission pins may be exposed to a first side of the housing and a second side opposite to the first side, and an exposed portion of the plurality of signal transmission pins may be coupled to both the main board and the daughter board based on the daughter board being mounted to the main board.

The main board may include an edge region disposed downward when the display device is in a mounted state, and the sub-board is disposed in the edge region of the main board. Therefore, the antenna is placed downward in the display device, thereby having a structure suitable for improving radiation performance.

The antenna is disposed in a first surface of the daughter board, and a second surface of the second circuit board opposite the first surface at least partially faces the first circuit board, with the spacer located between the first circuit board and the second circuit board. The antenna is disposed on a region of the first surface of the second circuit board that is opposite to a region of the second surface of the second circuit board that does not face the first circuit board.

[ PROBLEMS ] the present invention

As described above, the display device and the antenna assembly according to the present disclosure have an effect of improving radiation performance of an antenna by a simple design based on the structure of the display device.

Drawings

Fig. 1 schematically illustrates a display device according to an embodiment of the present disclosure.

Fig. 2 shows a cross-section of the display device of fig. 1 taken along the line a-a.

Fig. 3 and 4 are perspective views of antenna assemblies according to embodiments of the present disclosure.

Fig. 5 shows the antenna assembly of fig. 3 and 4 from the side.

Fig. 6 shows the antenna assembly of fig. 3 and 4 from the front side.

Fig. 7 shows the antenna assembly of fig. 3 and 4 viewed from the rear side.

Fig. 8 is a perspective view of an antenna assembly according to another embodiment of the present disclosure.

Fig. 9 and 10 are views for explaining improvement of antenna radiation performance in a display device according to an embodiment of the present disclosure.

Detailed Description

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals or symbols denote like elements having substantially the same function, and the size of each element may be exaggerated for clarity and convenience of description. However, the configurations and functions shown in the following exemplary embodiments should not be construed as limiting the inventive concept and key configurations and functions. In the following description, details about well-known functions or features may be omitted if it is determined that they would obscure the gist of the inventive concept.

In the following exemplary embodiments, the terms "first", "second", and the like are used only to distinguish one element from another, and the singular is intended to include the plural unless the context clearly indicates otherwise. In the following exemplary embodiments, it will be understood that the terms "comprises," "comprising," or "having," etc., do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and groups thereof. Further, "module" or "part" may perform at least one function or operation, be implemented by hardware, software, or a combination of hardware and software, and be integrated into at least one module. In the present disclosure, at least one of a plurality of elements means not only all of the plurality of elements but also both of each of the plurality of elements and a combination thereof, in addition to other elements.

Fig. 1 schematically shows a display device according to an embodiment of the present disclosure, and fig. 2 shows a cross-section of the display device of fig. 1 taken along the line a-a.

Fig. 1 illustrates a rear surface of a display device 100 according to an exemplary embodiment, in which a cover member 190 is removed to expose its internal components. Accordingly, the internal components of the display device 100 are not limited to the embodiment of fig. 1, but may be variously implemented differently from the internal components of fig. 1.

The display apparatus 100 processes an image signal received from an external image source (not shown) using a preset image processing procedure and displays an image. According to an embodiment, the display apparatus 100 may be embodied by a Television (TV) that processes a broadcast image based on a broadcast signal/broadcast information/broadcast data received from a transmitter of a broadcasting station. The broadcast signal received in the display apparatus 100 may be received through a ground wave, a cable, a satellite, or the like, and the image source in the present embodiment is not limited to a broadcast station.

In addition, the display apparatus 100 may receive image signals from various external apparatuses (not shown), such as a smart phone, a smart tablet of a tablet computer, a mobile device including various media players, a personal computer including a desktop or notebook computer, and the like. Further, the display apparatus 100 may process signals to be displayed on a screen as a moving image, a still image, an application, an on-screen display (OSD), a User Interface (UI) for controlling various operations, and the like based on the signals/data stored in the internal/external storage medium.

According to an embodiment, the display apparatus 100 may be embodied by a smart TV or an Internet Protocol (IP) TV. The smart TV refers to a TV that can perform the following operations: receiving and displaying a broadcast signal in real time, supporting a Web browsing function so that various contents can be searched and consumed through the internet while the broadcast signal is displayed in real time, and providing a convenient user environment for the Web browsing function. In addition, the smart TV includes an open software platform to provide interactive services to users. Accordingly, the smart TV can provide various contents, such as applications for a predetermined service, to a user through an open software platform. Such applications refer to applications for providing various services, such as Social Network Service (SNS), finance, news, weather, maps, music, movies, games, electronic books, and the like.

However, the concept of the present disclosure is not limited to the foregoing embodiment of the display apparatus 100, and thus the display apparatus 100 may be applied to various examples capable of processing an image, for example, a monitor or the like connected to a computer and a TV.

The display device 100 according to the embodiment of the present disclosure includes a first circuit board 110, a second circuit board 120, and a display 140. As shown in fig. 1 and 2, the second circuit board 120 is mounted on the first circuit board 110 at a predetermined distance d from the first circuit board 110.

According to an embodiment, the display device 100 further includes a power supply 160 and a driver 150. As shown in fig. 1, the first circuit board 110 and the power supply 160 are connected through a first interface 171, and the first circuit board 110 and the driver 150 are connected through a second interface 172. The first interface 171 and the second interface 172 may be embodied by a plurality of cables through which signals or power may be transmitted.

According to an embodiment, the display apparatus 100 further includes a chassis 180 disposed at a rear of the display 140 and configured to support components including the first circuit board 110.

However, the components of the display apparatus 100 shown in fig. 1 and 2 are given as an example only, and the display apparatus 100 according to an embodiment of the present disclosure may further include another component in addition to the components shown in fig. 1 or exclude some components from the components shown in fig. 1.

The first circuit board 110 refers to a main board (or main board or motherboard) on which at least one electronic component (or electronic assembly) 111 is disposed to perform a process for displaying an image on the display 140. The electronic components 111 mounted to or embedded in the first circuit board 110 include a chip set, a memory, and the like, and a wiring or a transmission line for electrically connecting these electronic components 111 is provided in the first circuit board 110. According to an embodiment, the first circuit board 110 may be embodied by a Printed Circuit Board (PCB).

According to an embodiment, the electronic components 111 provided in the first circuit board 110 include a tuner for tuning to a channel of a broadcast signal and an image processor for processing an image signal. The image processor may be embodied by a set of individual components, i.e., electronic components for individually performing a process of processing an image signal or a main system on chip (SoC) in which various functions are integrated. The main SoC may further include at least one processor to control general operations of the display device 100 and to control signal flow between internal components.

The process performed in the image processor includes: decoding for decoding the image signal according to an image format of the display apparatus 100; and scaling for adjusting the image signal to an output resolution suitable for the display 140. Here, the kind of the image processing process performed in the image processor according to the exemplary embodiment is not limited. For example, the image processing process may perform at least one of various processes such as de-interlacing for converting an interlaced broadcast signal into a progressive broadcast signal, noise reduction for improving image quality, detail enhancement, frame refresh rate conversion, line scanning, and the like.

According to the embodiment, a signal generated or synthesized by performing the process through an electronic part corresponding to an image processor is output to the display 140 through the driver 150 so that the display 140 can display an image based on the image signal.

The processor loads a control program (or instructions) to implement the control operation, and executes the loaded control program. The processor may include at least one of a Central Processing Unit (CPU), a microprocessor or (CP) or an Application Processor (AP). The control program is installed in a nonvolatile memory, i.e., a Read Only Memory (ROM), and at least a part of the installed control program is loaded into a volatile memory, i.e., a Random Access Memory (RAM), and executed. The processor, ROM and RAM are interconnected by an internal bus.

The processors may include single-core processors, dual-core processors, tri-core processors, quad-core processors, and similar multi-core processors. According to an embodiment, the processor may include a plurality of processors, for example, a main processor and a sub-processor operating in a sleep mode, for example, when the content providing apparatus receives only standby power and cannot fully operate.

The control program may include a program implemented in the form of at least one of a basic input/output system (BIOS), a device driver, an operating system, firmware, a platform, and an application. According to an example embodiment, the application may be previously installed or stored in the display device 100 when the display device 100 is manufactured, or may be installed in the electronic device 100 for future use based on data corresponding to the application received from the outside. For example, data of an application may be downloaded into the display apparatus 100 from an external server such as an application market. Such an external server is an example of a computer program product according to an exemplary embodiment, but is not limited thereto. Accordingly, the display apparatus 100 downloads and executes a computer program stored in a separate computer program product, thereby performing the operation of the processor.

In the display device 100 of the present disclosure, as shown in fig. 2, electronic parts 111 corresponding to an image processor and a processor are provided in the first circuit board 110. Of course, this is merely an example, and the electronic components may be separately arranged in a plurality of circuit boards that can be connected and communicate with each other.

The second circuit board 120 includes at least one antenna (see '123' in fig. 3) via which Radio Frequency (RF) signals are transmitted and received to communicate between the display device 100 and an external device. According to an embodiment, the antenna 123 includes a multi-antenna device to transmit and receive RF signals at 2.4GHz or 5.0 GHz.

According to an embodiment, the second circuit board 120 (hereinafter referred to as a daughter board) may further include a communication module (see "124" in fig. 3) to process the RF signal. The communication module 124 may be embodied by electronic components in the form of a chipset mounted or embedded in the second circuit board 120.

The display device 100 according to the embodiment of the present disclosure includes a spacer 130, the spacer 130 being placed between the first circuit board 110 and the second circuit board 120 and spacing the first circuit board 110 and the second circuit board 120 from each other.

The aforementioned display device 100 is designed to have a Module On Board (MOB) structure in which an antenna assembly including a sub-board 120 having an antenna 123 and a spacer 130 is mounted to one surface of a first circuit board (i.e., a main board 110).

A structure for coupling the main board 110 and the sub-board 120 using the spacer 130 will be described in more detail later with reference to fig. 3 to 8.

The communication module 224 processes the RF signal under the control of the processor so that the display device 100 can communicate with an external device. The communication module 224 may be based on one of various communication methods.

According to an embodiment of the present disclosure, the communication module 224 may be configured to allow the display apparatus 100 to perform data communication based on a Wi-Fi standard of the Institute of Electrical and Electronics Engineers (IEEE).

The image signal processed by the electronic components (i.e., the image processor provided in the first circuit board 110) is output to the display 140 through the driver 150. The display 140 includes a display panel to display an image.

The display 140 provided in the external device 200 is not limited. For example, the display 140 may be implemented as various display types such as liquid crystal, plasma, light emitting diode, Organic Light Emitting Diode (OLED), surface conduction electron emitter, carbon nanotube, nanocrystal, and the like.

The driver 150 controls the image signal received from the image processor to be displayed as an image on the display 140. According to an embodiment, the driver 150 may be embodied by a control board (or T-con board) having a timing controller (hereinafter, referred to as T-con) coupled to a front end of the display panel, controlling the driver circuit and enhancing image quality. The timing controller generates a control signal to adjust the time at which the image is output to the display 140.

The driver 150 includes a driver circuit provided corresponding to the type of the display 140. For example, when the display 140 is a liquid crystal type, the driver 150 includes a driver circuit having at least one driving chip to drive a panel on which an image is displayed.

According to an embodiment, the driver 150 includes a plurality of driving chips and a control board having a timing controller to generate control signals for controlling the plurality of driving chips.

The power supply 160 supplies power to the components of the display device 100. The power supply 160 converts commercial Alternating Current (AC) power received from the outside into power to be supplied to components of the display device 100 and supplies the converted power, and includes an inverter or a Switching Mode Power Supply (SMPS). According to an embodiment, the power supply 160 may be embodied by a power strip with SMPS.

The chassis 180 is disposed at the rear of the display 140 and is arranged in parallel with the display 140. The first circuit board 110, the driver 150, and the power supply 160 are fixed and mounted to the chassis 180. Here, the first circuit board 110 may be fixed to the chassis 180 with a surface on which the second circuit board 120 is disposed (i.e., a surface opposite to a surface on which the antenna assembly is mounted) facing the chassis 180.

According to an embodiment, the chassis 180 is made of aluminum or a similar metal and is therefore configured to isolate the display 140, i.e., to protect the display 140 from interference caused by components disposed opposite the chassis 180.

The display device 100 according to the embodiment of the present disclosure has the following structure: the second circuit board 120 having the antenna 123 is spaced apart from the chassis 180 or the display 140, thereby improving diffraction characteristics of the RF signal radiated from the antenna 123.

Next, the structure of the antenna assembly including the sub-board 120 and the spacer 130 will be described.

Fig. 3 and 4 are perspective views of antenna assemblies according to embodiments of the present disclosure, fig. 5 showing the antenna assemblies of fig. 3 and 4 from a side view, fig. 6 showing the antenna assemblies of fig. 3 and 4 from a front side, and fig. 7 showing the antenna assemblies of fig. 3 and 4 from a rear side.

As shown in fig. 3 to 7, at least one antenna 123 is mounted to the first surface 121 of the second circuit board 120. According to the embodiment of the present disclosure shown in fig. 3-7, the communication module 124 is also mounted to the first surface 121.

Referring to fig. 1 and 2, a second surface 122 of the second circuit board 120, i.e., an opposite surface of the first surface 121 on which the antenna 123 is mounted, is configured to at least partially face the first circuit board 110, i.e., to be at least partially opposite the first circuit board 110 with the spacer 130 therebetween.

With this structure, the second circuit board 120 is detachably provided to the first circuit board 110 through the spacer 130.

Here, the first circuit board 110 has an edge region 113 disposed downward in a state where the display device 100 is mounted, and the second circuit board 120 is disposed in the edge region 113 of the first circuit board 110. In this way, the second circuit board 120 having the antenna 123 is disposed below the display device 100, so that the electronic components 111 of the first circuit board 110 are not affected by the signal radiated from the antenna 123, thereby expecting an effect of improving the radiation performance.

According to an embodiment, as shown in fig. 2, the antenna 123 may be disposed on an area of the first surface 121 of the second circuit board 120, which is opposite to an area of the second surface 122 of the second circuit board 120 not facing the first circuit board 110. In other words, the antenna 123 is disposed outside the area of the first circuit board 110, further downward than the first circuit board 110. Here, the antenna 123 is installed to maintain a predetermined distance from the driver 150 so that the driver 150 may not be affected by the radiation signal.

The spacers 130 are formed as a pair to be coupled at opposite edges of the second circuit board 120, and thus serve as a gap member to maintain a predetermined distance d between the first circuit board 110 and the second circuit board 120.

The distance d between the first circuit board 110 and the second circuit board 120 is identified based on an experimental value for ensuring the radiation performance of the antenna 123, and may be, for example, 5 mm.

As shown in fig. 3 to 5, the spacer 130 is provided as an insulator and includes a housing for supporting opposite sides of the first and second circuit boards 110 and 120. The housing supports not only one surface of the first circuit board 110 on which the electronic parts 111 are mounted but also the second surface 122 of the second circuit board 120.

The spacer 130 is disposed in the housing and includes a plurality of signal transmission pins 131 to transmit signals between the first circuit board 110 and the second circuit board 120. The plurality of signal transmission pins 131 are exposed to a first side and a second side opposite to the first side of the housing, and the exposed portions of the signal transmission pins 130 are coupled to both the first circuit board 110 and the second circuit board 120.

The first circuit board 110 and the second circuit board 120 include a plurality of holes into which exposed portions of a plurality of signal transmission pins 131 are inserted and coupled. For example, the plurality of holes are embodied as internally plated through holes.

In the aforementioned display device 100 according to an embodiment of the present disclosure, the first circuit board 110 and the second circuit board 120 are electrically connected through the plurality of signal transmission pins 131, so that the processor provided in the first circuit board 110 may control the communication module 124 provided in the second circuit board 120.

Fig. 8 is a perspective view of an antenna assembly according to another embodiment of the present disclosure.

In the antenna assembly according to this embodiment shown in fig. 8, unlike the embodiment shown in fig. 3 to 7, no communication module is provided in the second circuit board 220, and only the antenna 223 is mounted as an electronic component to the second circuit board 220.

Therefore, components of the antenna assembly according to this embodiment of the present disclosure having the same roles or functions as those of the components of the antenna assembly according to the embodiment shown in fig. 3 to 7 will be given the same terms, and repeated description will be omitted.

In this embodiment shown in fig. 8, a communication module for processing RF signals transmitted and received through the antenna 223 may be mounted on the first circuit board 110 as an electronic component. The first circuit board 110 and the second circuit board 120 are electrically connected to each other through the signal transmission pin 231 of the spacer 230, and thus the communication module can process RF signals transmitted and received through the antenna 223.

Fig. 9 and 10 are views for explaining improvement of antenna radiation performance in a display device according to an embodiment of the present disclosure.

Fig. 9 shows the results of measuring the antenna efficiency and the isolation of the antenna device when the second circuit board 120 provided with the antenna 123 including two antenna devices (i.e., antenna assemblies) is mounted to the first circuit board 110 without being spaced apart from the first circuit board 110.

Fig. 10 shows the results of measuring the antenna efficiency and the isolation of the antenna device when the second circuit board 120 provided with the antenna 123 including two antenna devices (i.e., antenna assemblies) according to the embodiment of the present disclosure is mounted to the first circuit board 110 with a distance d from the first circuit board 110.

Referring to fig. 9 and 10, high antenna efficiencies of 70.8% and 69.1% were measured when the antenna assembly was spaced from the first circuit board 110 as in fig. 10. This can also be confirmed based on that the region 302 of fig. 10 (the region where the antenna signal is distributed forward, i.e., the region toward the display 140) is wider than the region 301 of fig. 9 in the state where the display device 100 is mounted.

Further, as shown in fig. 10, when the antenna assembly is spaced apart from the first circuit board 110, the isolation is improved as compared with the case shown in fig. 9. This may also be confirmed based on the power level of the interference signal measured in fig. 10 being-6.1 dB lower than the power level measured in fig. 9.

As described above, the display device 100 according to the embodiment of the present disclosure has the following structure: the first circuit board 110 and the second circuit board 120 or 220 are supported to be spaced apart from each other by a predetermined distance d through the case of the spacer 130 or 230, and the first circuit board 110 and the second circuit board 120 or 220 are electrically connected for signal transmission through the signal transmission pins 131 or 231 exposed to the first and second sides of the case, thereby improving the efficiency and isolation of the antenna 123 and enhancing the radiation performance.

Furthermore, when an antenna includes multiple antenna devices, signals from one antenna device may radiate to the motherboard and affect another antenna device. However, such an improvement in isolation can guarantee Multiple Input Multiple Output (MIMO) characteristics.

Although a few exemplary embodiments have been shown and described, it should be appreciated that modifications to these exemplary embodiments may be made without departing from the scope as defined by the appended claims.