阅读说明：本技术 天线封装和包括其的图像显示装置 (Antenna package and image display device including the same ) 是由 金钟敏 朴东必 李荣埈 于 2020-04-14 设计创作，主要内容包括：根据本发明实施方式的天线封装包括：印刷电路板；后表面天线图案,其设置在所述印刷电路板的上部部分；以及前表面天线图案,其朝向所述印刷电路板的下表面设置。所述后表面天线图案和所述前表面天线图案可通过所述印刷电路板配置为封装,以提高辐射覆盖范围和可靠性。(An antenna package according to an embodiment of the present invention includes: a printed circuit board; a rear surface antenna pattern disposed at an upper portion of the printed circuit board; and a front surface antenna pattern disposed toward a lower surface of the printed circuit board. The rear surface antenna pattern and the front surface antenna pattern may be configured as a package by the printed circuit board to improve radiation coverage and reliability.)

1. An antenna package, comprising:

a printed circuit board;

a post antenna pattern disposed on an upper portion of the printed circuit board, wherein the post antenna pattern is mounted directly on or integrated with the printed circuit board; and

a front antenna pattern disposed toward a bottom side of the printed circuit board and electrically connected to the printed circuit board.

2. The antenna package of claim 1, wherein the printed circuit board includes a rear conductive layer disposed at the upper portion, and the rear conductive layer includes the rear antenna pattern.

3. The antenna package of claim 2, wherein the rear conductive layer further comprises connection pads on which a driving integrated circuit chip is mounted.

4. The antenna package as claimed in claim 3, wherein the connection pad is disposed in a connection region on which the driving integrated circuit chip is mounted, and

a plurality of the posterior antenna patterns are arranged around the connection region.

5. The antenna package of claim 4, wherein a distance between the rear antenna patterns adjacent to each other is equal to or greater than half of a wavelength of a resonant frequency.

6. The antenna package of claim 4, wherein the plurality of post-antenna patterns are each adjacent to a vertex of the connection region.

7. The antenna package of claim 1, wherein the printed circuit board comprises a circuit layer and a lower conductive layer therein.

8. The antenna package of claim 7, wherein the printed circuit board further comprises a first ground plane disposed between the circuit layer and the rear antenna pattern.

9. The antenna package of claim 8, wherein the printed circuit board further comprises a first dielectric layer disposed between the post antenna pattern and the first ground plane.

10. The antenna package of claim 7, wherein the printed circuit board further comprises a second ground layer disposed between the circuit layer and the lower conductive layer.

11. The antenna package of claim 10, wherein the printed circuit board further comprises a second dielectric layer disposed between the lower conductive layer and the second ground layer.

12. The antenna package of claim 7, wherein the front antenna pattern is electrically connected to the lower conductive layer of the printed circuit board.

13. The antenna package of claim 7, wherein the circuit layers comprise a power line layer and a signal line layer connected to a motherboard.

14. The antenna package of claim 13, wherein the circuit layer further comprises a third ground layer disposed between the power line layer and the signal line layer.

15. The antenna package of claim 1, wherein the front antenna pattern includes a radiation electrode, a transmission line branching from the radiation electrode, and a signal pad connected to one end of the transmission line.

16. The antenna package of claim 15, wherein the front antenna pattern further comprises a ground pad disposed around the signal pad to be electrically separated from the signal pad and the transmission line.

17. The antenna package of claim 16, wherein the radiating electrode has a mesh structure.

18. The antenna package of claim 17, wherein the front antenna pattern further comprises a dummy pattern formed around the radiation electrode and having a mesh structure.

19. An image display device comprising the antenna package of claim 1.

20. The image display device according to claim 19, wherein the rear antenna pattern of the antenna package is provided on a rear side of the image display device, and

the front antenna pattern of the antenna package is disposed on a front side of the image display device including a display area.

Technical Field

The invention relates to an antenna package and an image display device including the same. More particularly, the present invention relates to an antenna package including an antenna pattern and a circuit connection structure and an image display device including the same.

Background

With the development of information technology, wireless communication technologies such as Wi-Fi, bluetooth, and the like are combined with image display devices in the form of smart phones, for example. In this case, the antenna may be combined with the image display device to provide a communication function.

According to recent development of mobile communication technology, antennas capable of realizing, for example, 3G to 5G high-frequency or ultra-high-frequency band communication are required in image display devices.

However, if the driving frequency of the antenna is increased, the reception coverage may be relatively reduced and a sufficient bandwidth may not be achieved. In addition, transmission loss may easily occur due to the structure and environment around the antenna, thereby reducing antenna sensitivity and reliability.

Further, as the image display device becomes thinner and the display area increases, the space in which the antenna can be mounted can be reduced.

For example, korean laid-open patent application No.2003-0095557 discloses an antenna structure embedded in a portable terminal, but requires an antenna design capable of achieving sufficient coverage, gain and high-frequency driving in a limited space.

Disclosure of Invention

[ technical goals ]

According to an aspect of the present invention, an antenna package having improved operational reliability and structural efficiency is provided.

According to an aspect of the present invention, there is provided an image display device including an antenna package having improved operational reliability and structural efficiency.

[ means of solution ]

(1) An antenna package, the antenna package comprising: a printed circuit board; an afterantenna pattern provided at an upper portion of the printed circuit board, wherein the afterantenna pattern is directly mounted on the printed circuit board or integrated with the printed circuit board; and a front antenna pattern disposed toward a bottom side of the printed circuit board and electrically connected to the printed circuit board.

(2) The antenna package of the above (1), wherein the printed circuit board includes a rear conductive layer provided at the upper portion, and the rear conductive layer includes the rear antenna pattern.

(3) The antenna package of the above (2), wherein the rear conductive layer further includes a connection pad on which the driving integrated circuit chip is mounted.

(4) The antenna package of the above (3), wherein the connection pads are arranged in a connection region on which the driver integrated circuit chip is mounted, and a plurality of the post-antenna patterns are arranged around the connection region.

(5) The antenna package of the above (4), wherein a distance between the rear antenna patterns adjacent to each other is equal to or greater than half of a wavelength of a resonance frequency.

(6) The antenna package of the above (4), wherein the plurality of post-antenna patterns are each adjacent to a vertex of the connection region.

(7) The antenna package of the above (1), wherein the printed circuit board comprises a circuit layer and a lower conductive layer therein.

(8) The antenna package of (7) above, wherein the printed circuit board further includes a first ground layer disposed between the circuit layer and the rear antenna pattern.

(9) The antenna package of the above (8), wherein the printed circuit board further includes a first dielectric layer disposed between the rear antenna pattern and the first ground layer.

(10) The antenna package of the above (7), wherein the printed circuit board further comprises a second ground layer disposed between the circuit layer and the lower conductive layer.

(11) The antenna package of the above (10), wherein the printed circuit board further includes a second dielectric layer disposed between the lower conductive layer and the second ground layer.

(12) The antenna package of the above (7), wherein the front antenna pattern is electrically connected to the lower conductive layer of the printed circuit board.

(13) The antenna package of the above (7), wherein the circuit layer includes a power supply line layer and a signal line layer, which are connected to the main board.

(14) The antenna package of the above (13), wherein the circuit layer further includes a third ground layer, the third ground layer being disposed between the power line layer and the signal line layer.

(15) The antenna package of the above (1), wherein the front antenna pattern includes a radiation electrode, a transmission line branching from the radiation electrode, and a signal pad connected to one end of the transmission line.

(16) The antenna package of the above (15), wherein the front antenna pattern further includes a ground pad disposed around the signal pad so as to be electrically separated from the signal pad and the transmission line.

(17) The antenna package of the above (16), wherein the radiation electrode has a mesh structure.

(18) The antenna package of the above (17), wherein the front antenna pattern further includes a dummy pattern formed around the radiation electrode and having a mesh structure.

(19) An image display device comprising the antenna package according to the above embodiments.

(20) The image display device of the above (19), wherein the rear antenna pattern of the antenna package is provided on a rear side of the image display device, and the front antenna pattern of the antenna package is provided on a front side of the image display device including a display area.

The antenna package according to an embodiment of the present invention may include a rear antenna pattern disposed at an upper portion of the printed circuit board and a front antenna pattern disposed toward a bottom side of the printed circuit board.

The antenna patterns may be disposed at upper and lower portions of the printed circuit board, so that even if the driving frequency of the antenna is increased, the beam coverage may be enlarged, and transmission loss, signal reduction, and the like may be prevented.

The front antenna pattern may be used as an AoD (antenna on a display screen) disposed toward the display surface of the image display device, and the rear antenna pattern may be used as AiP (antenna in a package) mounted in the rear structure of the image display device. The antenna package may be used to achieve signal transmission/reception and radiation through substantially the entire area of the image display device. In addition, aods and AiP can be independently controlled and driven by the same antenna driving Integrated Circuit (IC) chip.

Drawings

Fig. 1 is a schematic cross-sectional view illustrating an antenna package according to an exemplary embodiment.

Fig. 2 is a schematic top plan view illustrating an antenna package according to an exemplary embodiment.

Fig. 3 and 4 are schematic top plan views for describing the structure of the front antenna pattern according to an exemplary embodiment.

Fig. 5 is a schematic top plan view for describing a post-antenna pattern arrangement of an antenna package according to some example embodiments.

Fig. 6 is a schematic cross-sectional view illustrating a circuit layer structure of a printed circuit board included in an antenna package according to some example embodiments.

Fig. 7 and 8 are schematic plan views illustrating an image display device according to an exemplary embodiment.

Detailed Description

According to an exemplary embodiment of the present invention, there is provided an antenna package including a printed circuit board, a front antenna pattern and a rear antenna pattern, and having improved radiation coverage and reliability. According to an exemplary embodiment of the present invention, there is also provided an image display device including the antenna package.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, those skilled in the art will appreciate that such embodiments described with reference to the accompanying drawings are provided for further understanding of the spirit of the invention and do not limit the claimed subject matter as disclosed in the detailed description and the appended claims.

The terms "upper", "lower", "bottom", "front", "rear" as used herein do not denote absolute positions, but rather are used to distinguish relative positions between elements.

Fig. 1 is a schematic cross-sectional view illustrating an antenna package according to an exemplary embodiment.

Referring to fig. 1, an antenna package may include a printed circuit board 100, a rear conductive layer 110 disposed on or in an upper portion of the printed circuit board 100, and a front antenna pattern 200 facing a bottom surface of the printed circuit board 100.

The printed circuit board 100 may include, for example, a Flexible Printed Circuit Board (FPCB).

The printed circuit board 100 may include a circuit layer 150, an upper insulating layer 140 disposed on the circuit layer 150, and a lower insulating layer 160 disposed under the circuit layer 150. The rear conductive layer 110 may be disposed on the upper insulating layer 140, and the lower conductive layer 190 may be disposed under the lower insulating layer 160.

The rear conductive layer 110 may be disposed on the upper insulating layer 140. In an exemplary embodiment, the rear conductive layer 110 may include a rear antenna pattern 112, as will be described later with reference to fig. 2. The back conductive layer 110 may also include connection pads 114.

The rear conductive layer 110 may be disposed on the printed circuit board 100, or may be mounted on the printed circuit board 100 in a package form. For example, the rear conductive layer 110 may be covered by an upper cover film 103 of the printed circuit board 100.

The first ground layer 130 may be disposed between the rear conductive layer 110 and the circuit layer 150. The first dielectric layer 120 may be disposed between the first ground layer 130 and the rear conductive layer 110.

The first ground layer 130 may serve as a ground for the post antenna pattern 112, and the first dielectric layer 120 may serve as a dielectric layer for the post antenna pattern 112. The first ground layer 130 may be insulated and spaced apart from the circuit layer 150 by an upper insulating layer 140.

A driving Integrated Circuit (IC) chip 250 may be disposed on the rear conductive layer 110. For example, as shown in fig. 2, the upper cover film 103 may be partially removed to expose the connection pads 114, and the driving IC chip 250 may be mounted on the connection pads 114.

The second ground layer 170 may be disposed between the circuit layer 150 and the lower conductive layer 190. A second ground layer 170 may be included to prevent signal interference between the circuit layer 150 and the lower conductive layer 190 and to absorb noise.

The circuit layer 150 may include wirings such as power lines and signal lines of the printed circuit board 100. The lower conductive layer 190 may include, for example, pads for electrical connection to a main board of the image display device.

In some embodiments, the lower conductive layer 190 may be electrically connected to the front antenna pattern 200, as shown by the dotted line in fig. 1.

The front antenna pattern 200 may be electrically connected to a conductive layer of the antenna package or the printed circuit board 100 by a conductive member such as a contact, a via hole, an Anisotropic Conductive Film (ACF) bonding, soldering, a conductive clip, or the like.

For example, the front antenna pattern 200 may be electrically connected to the lower conductive layer 190 through a separate contact, via, or wire.

The lower insulating layer 160 may be disposed between the circuit layer 150 and the second ground layer 170, and the second dielectric layer 180 may be disposed between the second ground layer 170 and the lower conductive layer 190.

The lower conductive layer 190 may be covered by the lower coverlay film 105. For example, a portion of the lower cover film 105 may be removed to expose the pads, and then the printed circuit board 100 may be connected to the main board through the pads.

The rear conductive layer 110, the first and second ground layers 130 and 170, the circuit layer 150, and the lower conductive layer 190 may include a low resistance metal such as silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), chromium (Cr), titanium (Ti), tungsten (W), niobium (Nb), tantalum (Ta), vanadium (V), iron (Fe), manganese (Mn), cobalt (Co), nickel (Ni), zinc (Zn), tin (Sn), molybdenum (Mo), calcium (Ca), or an alloy thereof.

The first and second dielectric layers 120 and 180 may include polyester-based resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; cellulose-based resins such as diacetylcellulose and triacetylcellulose; a polycarbonate-based resin; acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; styrene-based resins such as polystyrene and acrylonitrile-styrene copolymer; polyolefin-based resins such as polyethylene, polypropylene, cyclic olefin or polyolefin having a norbornene structure and ethylene-propylene copolymer; a vinyl chloride-based resin; amide-based resins such as nylon and aramid; an imide-based resin; a polyether sulfone-based resin; a sulfone-based resin; polyether ether ketone-based resin; polyphenylene sulfide resin; a vinyl alcohol-based resin; a vinylidene chloride resin; vinyl butyral based resin; an allyl salt-based resin; a polyoxymethylene-based resin; an epoxy-based resin; urethane or acrylic urethane based resins; silicone, and the like. These may be used alone or in combination of two or more thereof.

In some embodiments, an adhesive material such as Optically Clear Adhesive (OCA) or Optically Clear Resin (OCR) may be included in the first and second dielectric layers 120 and 180.

In some embodiments, the first dielectric layer 120 and the second dielectric layer 180 may include an inorganic insulating material, such as silicon oxide, silicon nitride, silicon oxynitride, glass, or the like.

For example, a capacitance or inductance may be formed between the rear conductive layer 110 including the rear antenna pattern and the first ground layer 130 by the first dielectric layer 120, so that a frequency band, in which the antenna may be driven or operated, may be adjusted. In some embodiments, the dielectric constant of the first dielectric layer 120 may be adjusted in a range of about 1.5 to about 12. When the dielectric constant exceeds about 12, the driving frequency may be excessively lowered, so that driving of a desired high frequency band may not be achieved.

Fig. 2 is a schematic top plan view illustrating an antenna package according to an exemplary embodiment. In particular, fig. 2 shows the elements and configuration of the rear conductive layer 110 of the antenna package.

Referring to fig. 2, as described above, the rear conductive layer 110 may be disposed on the first dielectric layer 120 and may be mounted or encapsulated in the printed circuit board 100. The rear conductive layer 110 may include a rear antenna pattern 112 and a connection pad 114.

The connection pads 114 may include, for example, conductive balls or pads for wiring connections. In an exemplary embodiment, the connection pads 114 may be disposed in an IC chip connection region C, which is allocated on an upper surface of the printed circuit board 100 or an upper surface of the first dielectric layer 120. The driving IC chip 250 as shown in fig. 1 may be mounted on the IC chip connection region C to be connected to the connection pad 114.

The post antenna pattern 112 may be an AiP (antenna in package) pattern substantially integrated or packaged in the printed circuit board 100. For example, the rear antenna pattern 112 may be an antenna pattern directly mounted on the printed circuit board 100 or in the printed circuit board 100.

The post antenna pattern 112 may be arranged around the IC chip connection region C. In an exemplary embodiment, a plurality of the post antenna patterns 112 may be disposed around one IC chip connection region C or the driving IC chip 250.

In an embodiment, the posterior antenna pattern 112 may be disposed adjacent to each vertex of the IC chip connection region C, respectively. Therefore, signal loss in the transmission line for signal transmission/reception using the driver IC chip can be prevented, and a distance capable of preventing interference between adjacent post-antenna patterns 112 can be realized.

In an embodiment, the distance between adjacent rear antenna patterns 112 may be equal to or greater than half the wavelength of the resonant frequency.

As described with reference to fig. 1, the front antenna pattern 200 may be disposed toward the bottom surface of the printed circuit board 100. In some embodiments, electrical connection to the front antenna pattern 200 disposed under the printed circuit board 100 may be achieved by the lead 116 branching from the connection pad 114.

In some embodiments, the leads 116 may also be electrically connected to the post-antenna pattern 112. In this case, the driving control, the power feeding, and the signal transmission of the front antenna pattern 200 and the rear antenna pattern 112 may be performed together by one driving IC chip 250.

In one embodiment, the front antenna pattern 200 and the rear antenna pattern 112 may be independently controlled to be driven in different modes by the driving IC chip 250. For example, when the front antenna pattern 200 is operated in the transmission mode (Tx mode), the rear antenna pattern 112 may be operated in the reception mode (Rx mode), and an additional receiver may be omitted.

Fig. 3 and 4 are schematic top plan views for describing the structure of the front antenna pattern according to an exemplary embodiment.

Referring to fig. 3, the front antenna pattern 200 may be disposed on the front dielectric layer 210, and may include a radiation electrode 220, a transmission line 230, and a pad 240. The pads 240 may include signal pads 242 and ground pads 244.

The front dielectric layer 210 may include a material substantially the same as or similar to the material of the first dielectric layer 120 as described above. In some embodiments, an insulating layer or an insulating structure included in the image display device may be used as the front dielectric layer 210.

The radiation electrode 220 may have, for example, a polygonal plate shape, and the transmission line 230 may extend from a central portion of the radiation electrode 220 to be electrically connected to the signal pad 242. The transmission line 230 may be formed as a single member substantially integrated with the radiation electrode 220.

In some embodiments, pairs of ground pads 244 may be provided with signal pads 242 interposed therebetween. The ground pad 244 may be electrically separated from the signal pad 242 and the transmission line 230.

For example, the ground pad 244 may face the signal pad 242 so that vertical radiation and horizontal radiation may be realized together from the front antenna pattern 200.

The ground pad 244 may be electrically connected to a ground layer included in the printed circuit board 100 through, for example, a via hole or a contact. For example, the ground pad 244 may be electrically connected to a ground layer closest to the front antenna pattern 200 among ground layers included in the printed circuit board 100.

The front antenna pattern 200 may include a low resistance metal or alloy that is substantially the same as or similar to the back conductive layer 110.

For example, the front antenna pattern layer 200 may include silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), chromium (Cr), titanium (Ti), tungsten (W), niobium (Nb), tantalum (Ta), vanadium (V), iron (Fe), manganese (Mn), cobalt (Co), nickel (Ni), zinc (Zn), tin (Sn), molybdenum (Mo), calcium (Ca), or an alloy thereof. These may be used alone or in combination thereof.

In an embodiment, the front antenna pattern 200 may include silver (Ag) or a silver alloy (e.g., silver-palladium-copper (APC) alloy) to provide low resistance. In an embodiment, the antenna pattern layer 200 may include copper (Cu) or a copper alloy (e.g., a copper-calcium (CuCa) alloy) in consideration of low resistance and fine line width patterning.

In some embodiments, the front antenna pattern 200 may include a transparent conductive oxide, such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), indium zinc tin oxide (ITZO), zinc oxide (ZnOx), or the like.

In some embodiments, the front antenna pattern 200 may include a multilayer structure of a transparent conductive oxide layer and a metal layer. For example, the front antenna pattern 200 may include a three-layer structure of a transparent conductive oxide layer-metal layer-transparent conductive oxide layer. In this case, the flexibility characteristics can be improved by the metal layer, and the signal transmission speed can also be improved by the low resistance of the metal layer. The transparent conductive oxide layer may improve corrosion resistance and transparency.

In an exemplary embodiment, the front antenna pattern 200 may be an AoD (antenna on display screen) pattern disposed toward a display area of the image display device and electrically connected to the printed circuit board 100.

Referring to fig. 4, a dummy pattern 225 having a mesh structure may be formed around the radiation electrode 220. In an embodiment, the radiation electrode 220 may further include a mesh structure substantially the same as or similar to the mesh structure of the dummy pattern 225.

For example, the radiation electrode 220 and the dummy pattern 225 may be separated and insulated from each other by a separation region 235 formed along the periphery of the radiation electrode 220.

The radiation electrode 220 and the dummy pattern 225 may be formed to include substantially the same or similar mesh structures, so that the transmittance of the former antenna pattern 200 may be increased and the visual recognition of the radiation electrode 220 due to the pattern shape deviation may be prevented.

In some embodiments, the transmission line 230 branched from the radiation electrode 220 may also include a mesh structure. In one embodiment, the pad 240 shown in fig. 3 may have a solid pattern structure to increase signaling speed and reduce resistance.

Fig. 5 is a schematic top plan view for describing a post-antenna pattern arrangement of an antenna package according to some example embodiments. For convenience of description, illustration of the driving IC chip 250 is omitted in fig. 5.

Referring to fig. 5, the post antenna unit BU may be defined by a post antenna pattern 112 disposed around one driving IC chip 250. In an exemplary embodiment, the plurality of post-antenna units BU may be arranged in an array on the first dielectric layer 120.

For example, a relatively large number of antenna patterns may be arranged in an array form on the rear side of the image display device that is not visually recognizable to the user, so that the reception sensitivity and gain characteristics may be further improved.

Fig. 6 is a schematic cross-sectional view illustrating a circuit layer structure of a printed circuit board included in an antenna package according to some example embodiments.

Referring to fig. 6, the circuit layer 150 shown in fig. 1 may include a power line layer 152 and a signal line layer 156. Antenna feeding or power reception from the main board may be realized through the power line layer 152. Signal transmission between the main board and the driving IC chip 250 may be performed through the signal line layer 156.

In some embodiments, a third ground layer 154 may be disposed between the power line layer 152 and the signal line layer 156. Noise and signal interference between the signal line layer 156 and the power line layer 152 may be absorbed or removed by the third ground layer 154.

The first insulating layer 151 may be included between the power line layer 152 and the third ground layer 154, and the second insulating layer 153 may be included between the third ground layer 154 and the signal line layer 156.

The first insulating layer 151 and the second insulating layer 153 may serve as a core layer of the printed circuit board 100. For example, the first and second insulating layers 151 and 153 may include a flexible resin material such as polyimide, epoxy, polyester, Cyclic Olefin Polymer (COP), Liquid Crystal Polymer (LCP), or the like.

Fig. 7 and 8 are schematic plan views illustrating an image display device according to an exemplary embodiment. Fig. 7 and 8 are top plan views viewed from the front and rear directions of the image display device, respectively.

Referring to fig. 7, the front antenna pattern 200 included in the antenna package according to an exemplary embodiment may be disposed toward the front surface of the image display device.

The front surface of the image display device may include a display area DA and a peripheral area PA. The peripheral area PA may correspond to, for example, a light shielding portion or a frame portion of the image display apparatus.

For example, the pad 240 included in the former antenna pattern 200 may be disposed in the peripheral area PA. Accordingly, the user of the image display device can be prevented from recognizing the pad 240.

In some embodiments, at least a portion of the radiation electrode 220 of the front antenna pattern 200 may be disposed in the display area DA. In this case, the radiation electrode 220 may include a mesh structure as shown in fig. 4, and the transmittance may be prevented from being lowered due to the radiation electrode 220. The dummy pattern 225 having a mesh structure may be formed around the radiation electrode 220, and the dummy pattern 225 may also be at least partially distributed in the display area DA.

Referring to fig. 8, the rear antenna pattern 112 may be disposed toward the rear surface of the image display device through the printed circuit board 100. For example, the printed circuit board 100 may be mounted on the main board 260 and may be electrically connected to the circuit structure of the main board 260 through the lower conductive layer 190.

The driving IC chip 250 may be mounted on the pads 114 to define a rear antenna unit BU together with the rear antenna pattern 112.

In an exemplary embodiment, the front antenna pattern 200 may be electrically connected to the lower conductive layer 190 included in the printed circuit board 100, and may be controlled by the driving IC chip 250. Thus, the front antenna pattern 200 and the rear antenna pattern 112 may be substantially encapsulated with the printed circuit board 100.

In some embodiments, the front antenna pattern 200 and the rear antenna pattern 112 may be driven and controlled together by the driving IC chip 250.

As described above, the printed circuit board 100 may be used to distribute the antenna pattern on the front and rear sides of the image display device, so that the radiation coverage of the antenna pattern may be extended. Therefore, a narrow band phenomenon caused by high frequency communication can be prevented while achieving higher radiation and signal sensitivity.

Further, the number of antenna patterns can be increased on the rear side which is not visually recognizable by the user, so that the antenna driving characteristics can be improved without degrading the image quality of the image display device.