CN112736434A

CN112736434A - Antenna structure, antenna array comprising same and display device

Info

Publication number: CN112736434A
Application number: CN202011163551.1A
Authority: CN
Inventors: 金钟敏; 李英洙; 许润镐
Original assignee: Dongwoo Fine Chem Co Ltd
Current assignee: Dongwoo Fine Chem Co Ltd
Priority date: 2019-10-28
Filing date: 2020-10-27
Publication date: 2021-04-30
Anticipated expiration: 2040-10-27
Also published as: CN112736434B; WO2021085919A1

Abstract

The antenna structure of some embodiments of the present invention includes: a dielectric layer; a radiation pattern disposed on the dielectric layer; a first signal pad supplying a first input signal to the radiation pattern; a second signal pad selectively supplying a second input signal to the radiation pattern; a first transmission line connecting the first signal pad to the radiation pattern; and a second transmission line connecting the second signal pad to the radiation pattern. An antenna structure having improved signal efficiency and space efficiency can be provided by realizing a plurality of polarization characteristics by one radiation pattern.

Description

Antenna structure, antenna array comprising same and display device

Technical Field

The invention relates to an antenna structure body, an antenna array comprising the antenna structure body and a display device. More particularly, the present invention relates to an antenna structure including an antenna pattern and a dielectric layer, and an antenna array and a display device including the antenna structure.

Background

Recently, with the development of an information-oriented society, wireless communication technologies such as Wi-Fi, Bluetooth (Bluetooth), and the like are implemented in the form of, for example, a smart phone in combination with a display device. In this case, an antenna may be incorporated in the display device to perform a communication function.

Recently, with the development of mobile communication technology, it is necessary to incorporate an antenna for performing communication in an ultra high frequency band to the display device.

In addition, as a display device in which the antenna is mounted is made thinner and lighter, the space occupied by the antenna may also be reduced. Therefore, it is limited to simultaneously transmit and receive high-frequency and wide-band signals in a limited space.

Therefore, it is necessary to develop an antenna which is inserted into the thin display device in the form of a film or a patch and can secure reliability of radiation characteristics even with a thin structure.

For example, korean laid-open patent No. 2013-0095451 discloses an antenna integrated with a display panel, but fails to provide a solution to the above-mentioned problems.

Disclosure of Invention

Technical problem

An object of the present invention is to provide an antenna structure body in which signal efficiency and space efficiency are improved.

Another object of the present invention is to provide an antenna array and a display device including an antenna structure body with improved signal efficiency and space efficiency.

Technical scheme

1. An antenna structure, comprising: a dielectric layer; a radiation pattern disposed on the dielectric layer; a first signal pad supplying a first input signal to the radiation pattern; a second signal pad selectively supplying a second input signal to the radiation pattern; a first transmission line connecting the first signal pad to the radiation pattern; and a second transmission line connecting the second signal pad to the radiation pattern.

2. The antenna structure body according to the above 1, wherein an angle between an extending direction of the first transmission line and an extending direction of the second transmission line is 80 to 100 °.

3. The antenna structure according to claim 1, wherein the radiation pattern has a regular polygon shape, and the first transmission line and the second transmission line are connected to two adjacent sides of the regular polygon, respectively.

4. The antenna structure body according to claim 1, wherein the first transmission line and the second transmission line are formed in parallel to virtual extension lines extending from a center of the radiation pattern toward two adjacent vertex directions of the radiation pattern, respectively.

5. The antenna structure according to claim 4, wherein the first transmission line and the second transmission line are bent in parallel with a long side direction or a short side direction of the radiation pattern.

6. The antenna structure body according to the above item 1, wherein the radiation pattern includes a mesh structure.

7. The antenna structure body according to the above 6, wherein the first transmission line and the second transmission line include a solid (solid) structure.

8. The antenna structure body according to the above 6, wherein an apex portion connecting the first transmission line and the second transmission line in the radiation pattern includes an impedance matching pattern of a solid structure.

9. The antenna structure body according to the above 6, wherein the side of the radiation pattern connecting the first transmission line and the second transmission line includes an edge pattern defining an edge of the radiation pattern.

10. The antenna structure according to claim 6, wherein the lattice structure includes a first unit line and a second unit line that intersect with each other, a part of the first unit line is disposed on an extension line of the first transmission line, and a part of the second unit line is disposed on an extension line of the second transmission line.

11. The antenna structure body according to claim 1, wherein the first transmission line and the second transmission line have the same length.

12. The antenna structure according to claim 1, wherein the first signal pad and the first transmission line are symmetrical to the second signal pad and the second transmission line with respect to a center line of the radiation pattern.

13. The antenna structure according to claim 1, further comprising: and a driver integrated circuit chip that supplies the first input signal and the second input signal to the first signal pad and the second signal pad, respectively.

14. The antenna structure according to claim 13, further comprising: and the flexible circuit board comprises a circuit wiring electrically connected with the first signal bonding pad and the second signal bonding pad, and the driving integrated circuit chip is configured on the flexible circuit board and is electrically connected with the circuit wiring.

15. The antenna structure according to claim 1, wherein the first input signal and the second input signal are supplied separately, one of vertical polarization and horizontal polarization is realized by the first input signal, and the other of the vertical polarization and the horizontal polarization is realized by the second input signal.

16. The antenna structure according to claim 1, further comprising: and an antenna ground layer disposed on the bottom surface of the dielectric layer.

17. A display device comprising the antenna structures of some of the above embodiments.

18. An antenna structure, comprising: a first radiation pattern; a second radiation pattern arranged to be spaced apart from the first radiation pattern in a first direction; a third radiation pattern arranged to be spaced apart from the first radiation pattern in a second direction; a first transmission line extending in the first direction and connecting a first signal pad and the first radiation pattern; a second transmission line extending in the second direction and connecting a second signal pad and the first radiation pattern; a third transmission line extending in the first direction and connecting the first radiation pattern and the second radiation pattern; and a fourth transmission line extending in the second direction and connecting the first radiation pattern and the third radiation pattern.

19. An antenna array comprising a plurality of antenna structures according to claim 18.

20. The antenna array according to 19, wherein the plurality of antenna structures are arranged so as to be spaced apart from each other, or so as to be at least partially overlapped with each other.

ADVANTAGEOUS EFFECTS OF INVENTION

The antenna structure body of some embodiments of the present invention may include a first signal pad and a second signal pad that independently supply an input signal to the radiation pattern. Thus, a plurality of polarization characteristics can be realized by one radiation pattern.

In some embodiments, the first input signal and the second input signal are alternately supplied through the first signal pad and the second signal pad, so that the horizontal polarization characteristic and the vertical polarization characteristic can be simultaneously realized by 1 radiation pattern.

In some embodiments, the transmittance of the antenna structure body may be improved by forming at least a portion of the antenna pattern layer into a mesh structure. For example, the antenna structure is used in various object structures including display devices of high-frequency or ultra-high-frequency (e.g., 3G, 4G, 5G, or higher) mobile communication devices, vehicles, buildings, and the like to improve optical characteristics such as radiation characteristics and transmittance together.

In some embodiments, a plurality of radiation patterns may be connected in series in the extending direction of each transmission line to improve the antenna gain.

Drawings

Fig. 1 to 7 are schematic plan views illustrating antenna pattern layers of antenna structure bodies of some exemplary embodiments.

Fig. 8 is a schematic plan view illustrating an antenna array in which a plurality of radiation patterns are arranged according to some exemplary embodiments.

Fig. 9 and 10 are schematic plan views illustrating antenna pattern layers of the antenna structure body of some exemplary embodiments.

Fig. 11 to 13 are schematic plan views illustrating an antenna array in which a plurality of antenna structures are arranged according to some exemplary embodiments.

Fig. 14 is a schematic cross-sectional view illustrating an antenna structure of some exemplary embodiments.

Fig. 15 is a schematic cross-sectional view illustrating an antenna structure of some exemplary embodiments.

Fig. 16 is a schematic plan view illustrating a display device of some exemplary embodiments.

Fig. 17 and 18 are schematic diagrams illustrating radiation patterns of the antenna structure of some exemplary embodiments when in operation.

Detailed Description

Some exemplary embodiments of the present invention provide an antenna structure body including: a radiation pattern disposed on the dielectric layer; and first and second signal pads for supplying the first and second input signals to the radiation pattern through the first and second transmission lines, respectively. An antenna structure which can improve signal efficiency and space efficiency by realizing a plurality of polarization characteristics by one radiation pattern.

The antenna structure may be, for example, a microstrip patch antenna (microstrip patch antenna) manufactured in the form of a transparent film. The antenna structure can be applied to, for example, Communication devices for high-frequency or ultra-high-frequency (e.g., 3G, 4G, 5G, or higher) mobile Communication, Wi-Fi, bluetooth, NFC (Near Field Communication), GPS (Global Positioning System), and the like. The antenna structure can be applied to various target structures such as vehicles and buildings.

Further, some embodiments of the present invention provide a display device including the antenna structure.

Some embodiments of the invention are described in more detail below with reference to the accompanying drawings. However, the following drawings attached to the present specification illustrate preferred embodiments of the present invention and serve to facilitate further understanding of the contents of the present invention and technical ideas of the present invention, and therefore the present invention should not be construed as being limited to only the matters set forth in such drawings.

In the following drawings, for example, two directions parallel to the upper surface of the dielectric layer 110 and crossing each other are defined as an x direction and a y direction. For example, the x-direction and the y-direction may intersect perpendicularly with each other. A direction perpendicular to the upper surface of the dielectric layer 110 is defined as a z-direction. For example, the x direction may correspond to a width direction of the antenna structure, the y direction may correspond to a length direction of the antenna structure, and the z direction may correspond to a thickness direction of the antenna structure. The definition of the directions can equally be applied to the remaining figures.

Fig. 1 is a schematic plan view illustrating an antenna pattern layer of an antenna structure body of some exemplary embodiments.

Referring to fig. 1, the antenna structure may include a dielectric layer 110 and an antenna pattern layer disposed on the dielectric layer 110. The antenna pattern layer may include a radiation pattern 121, and first and

second signal pads

127 and 128 electrically connected to the radiation pattern 121. For example, the radiation pattern 121 may be electrically connected to the first and

second signal pads

127 and 128 through the first and

second transmission lines

123 and 124.

The dielectric layer 110 may include, for example, a transparent resin substance. For example, the dielectric layer 110 may include polyester resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; cellulose resins such as diacetylcellulose and triacetylcellulose; a polycarbonate resin; acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; styrene resins such as polystyrene and acrylonitrile-styrene copolymer; polyolefin resins such as polyethylene, polypropylene, polyolefins having cyclic groups or norbornene structures, and ethylene-propylene copolymers; vinyl chloride resin; amino resins such as nylon and aromatic polyamide; an imide resin; polyether sulfone resin; a sulfone resin; polyether ether ketone resin; a polyphenylene sulfone resin; a vinyl alcohol resin; vinylidene chloride resin; a vinyl butyral resin; an acrylate resin; a polyoxymethylene resin; and thermoplastic resins such as epoxy resins. These may be used alone or in combination of two or more.

A transparent film made of a thermosetting resin or an ultraviolet-curing resin such as a (meth) acrylic group, urethane group, epoxy group, or silicon group may be used as the dielectric layer 110. In some embodiments, an Adhesive film such as Optically Clear Adhesive (OCA), Optically Clear Resin (OCR), or the like may also be included in the dielectric layer 110.

In some embodiments, the dielectric layer 110 may include an inorganic insulating substance such as silicon oxide, silicon nitride, silicon oxynitride, glass, or the like.

In one embodiment, the dielectric layer 110 may be provided as a single layer in nature. In one embodiment, the dielectric layer 110 may also include a multi-layer structure with at least 2 layers or more.

Capacitance (capacitance) or inductance (inductance) is formed between the antenna pattern layer and/or the antenna ground layer 130 through the dielectric layer 110, so that a frequency band in which the antenna structure body can be driven or sensed can be adjusted. In some embodiments, the dielectric constant of the dielectric layer 110 may be adjusted to a range of about 1.5 to 12. When the dielectric constant exceeds about 12, the driving frequency is excessively reduced, so that driving in a desired high frequency band may not be achieved.

As described above, the antenna pattern layer includes the radiation pattern 121, the first signal pad 127, and the second signal pad 128, and the radiation pattern 121 may be electrically connected to the first signal pad 127 and the second signal pad 128 through the first transmission line 123 and the second transmission line 124.

In some exemplary embodiments, the radiation pattern 121, the first signal pad 127, the second signal pad 128, the first transmission line 123 and the second transmission line 124 may be disposed on the upper surface of the dielectric layer 110. The radiation pattern 121, the first signal pad 127, the second signal pad 128, the first transmission line 123 and the second transmission line 124 may be disposed on substantially the same level.

The radiation pattern 121 receives input signals (electrical signals) from the first and

second signal pads

127 and 128, and radiates electromagnetic wave signals. Further, according to the duality (reciprocality) of the antenna, an electromagnetic wave signal can be received and converted into an electric signal.

In some exemplary embodiments, the radiation pattern 121 may be provided as a thin film of a regular polygonal shape. The first transmission line 123 and the second transmission line 124 may be connected to adjacent two sides of the regular polygon radiation pattern 121 (adjacent two sides of the regular polygon in a top view). For example, the first transmission line 123 and the second transmission line 124 may be connected to the centers of the two sides.

A virtual line passing through the radiation pattern 121 and dividing the radiation pattern 121 into two parts may be defined as a center line CL. As shown in fig. 1, the center line CL may extend in the longitudinal direction (the y direction) of the antenna structure.

In some exemplary embodiments, the first transmission line 123 may extend toward the first direction and be connected to the radiation pattern 121, and the second transmission line 124 may extend toward the second direction and be connected to the radiation pattern 121. At this time, the first and second directions are inclined with respect to the center line CL of the radiation pattern 121, and an angle between the first and second directions may be 80 to 100 °, and preferably 90 °.

In some exemplary embodiments, the first transmission line 123 and the second transmission line 124 may be inclined with respect to a length direction (the y direction) of the antenna structure body. For example, when the radiation pattern 121 includes a diamond shape as shown in fig. 1, the first transmission line 123 and the second transmission line 124 may extend in a direction perpendicular from both sides of the inclination of the radiation pattern 121. In this case, the lengths of the first transmission line 123 and the second transmission line 124 can be reduced, and the transmission speed and efficiency of the input signal can be improved.

In some exemplary embodiments, the radiation pattern 121 may include a diamond shape. The diamond shape may include a shape in which one side is inclined with respect to the longitudinal direction of the antenna structure body (the y direction). For example, the diamond shape may be symmetrical with respect to the center line CL.

In some embodiments, the first transmission line 123 and the second transmission line 124 may be connected to the center of each side of the radiation pattern 121. For example, the first and

second transmission lines

123 and 124 may be branched from the radiation pattern 121 and connected to the first and

second signal pads

127 and 128, respectively. In one embodiment, the first transmission line 123 and the second transmission line 124 may diverge from the center of each side of the radiation pattern 121.

In some exemplary embodiments, the first transmission line 123 and the second transmission line 124 may be bent. For example, the first transmission line 123 may extend from the first signal pad 127 to the y direction and then be bent to the first direction and connected to the radiation pattern 121. In addition, the second transmission line 124 may extend from the second signal pad 128 to the y direction and then be bent to the second direction and connected to the radiation pattern 121.

In some exemplary embodiments, the first transmission line 123 and the second transmission line 124 are symmetrically formed. For example, the symmetrical fiducial may include a center or centerline CL of the radiation pattern 121.

In an embodiment, the first transmission line 123 and the second transmission line 124 may be provided as a single member substantially integrally connected with the radiation pattern 121. In an embodiment, each of the first transmission line 123 and the second transmission line 124 may also be provided as a single component substantially integrally connected with the first signal pad 127 and the second signal pad 128.

Fig. 2 is a schematic plan view illustrating an antenna pattern layer of the antenna structure body of some exemplary embodiments. A detailed description of a configuration (e.g., the same reference numeral configuration) substantially the same as that described with reference to fig. 1 may be omitted.

Referring to fig. 2, the antenna structure body of some example embodiments may include a radiation pattern 122, a first transmission line 125, and a second transmission line 126.

In one embodiment, at least one side of the radiation pattern 122 may be arranged in parallel with the width direction (the x direction) of the antenna structure. For example, the radiation pattern 122 may include a square shape, and one side of the square may be aligned parallel to the length direction (the x direction) of the antenna structure body.

In one embodiment, the first transmission line 125 and the second transmission line 126 may diverge from two adjacent edges of the radiation pattern 122. The branched first transmission line 125 may be linearly connected to the first signal pad 127, and the second transmission line 126 may be bent and connected to the second signal pad 128. In this case, the phase difference of the first input signal and the second input signal supplied to the radiation pattern 122 through the first transmission line 125 and the second transmission line 126 may be adjusted by the driving IC chip 280.

The first and

second signal pads

127 and 128 may receive power from an external circuit structure and transmit the power to the radiation pattern 121.

In some exemplary embodiments, the first signal pad 127 may supply a first input signal having a first phase to the radiation pattern 121. The second signal pad 128 may supply a second input signal having a second phase.

In some exemplary embodiments, the first input signal and the second input signal may be alternately supplied. In this case, the vertical polarization characteristic and the horizontal polarization characteristic may be realized by one radiation pattern 121. For example, when the first input signal is supplied, one of the vertical polarization characteristic and the horizontal polarization characteristic may be realized by the radiation pattern 121, and when the second input signal is supplied, the remaining one may be realized.

In some embodiments, the phase of the first input signal and the phase of the second input signal may be different. A second input signal of a different phase from the first input signal may be simultaneously supplied to realize a circular polarization or an elliptical polarization characteristic. The first input signal and the second input signal having the phase difference may be simultaneously supplied to the radiation pattern 121, thereby implementing a plurality of polarization characteristics by the radiation pattern 121.

For example, the first input signal and the second input signal may be supplied one by adjusting a phase difference of the first input signal and the second input signal or switching each other, thereby realizing a plurality of polarization characteristics by one radiation pattern 121. The polarization characteristics may include horizontal polarization, vertical polarization, right-hand polarization, left-hand polarization, and the like.

In some exemplary embodiments, when the first input signal and the second input signal are simultaneously supplied, the phase difference of the first input signal and the second input signal may be about 80 to 100 ° (degrees). In this case, the antenna structure can effectively realize the horizontal polarization characteristic, the vertical polarization characteristic, and the circular polarization characteristic at the same time. Preferably, the phase difference may be 85 to 95 °, and more preferably may be about 90 °.

In some exemplary embodiments, the polarization axis ratio (Axial ratio) of the radiation pattern 121 may be 0 to 2. By adjusting the phase difference and the polarization axis ratio, the polarization characteristic of the radiation signal can be adjusted. Preferably, the polarization axis ratio may be 0.8 to 1.2, and more preferably, the polarization axis ratio may be 0.9 to 1.1.

For example, when the phase difference is about 90 ° and the axial ratio of the radiation pattern is about 1, the antenna structure can further realize circular polarization (right-hand polarization and left-hand polarization) characteristics.

A plurality of polarization characteristics are realized by one radiation pattern 121, so that signals of various polarization forms can be efficiently transmitted and received. Further, since the horizontally polarized antenna and the vertically polarized antenna can be integrated, space efficiency can be improved when the antenna is mounted on a display device or the like.

In some exemplary embodiments, the radiation pattern 121, the first signal pad 127, the first transmission line 123, the second signal pad 128, and the second transmission line 124 may have a symmetrical structure.

For example, the radiation pattern 121 may have a symmetrical shape with respect to the center line CL. The first signal pad 127 and the second signal pad 128 may be symmetrically formed with reference to the center line CL, and the first transmission line 123 and the second transmission line 124 may be symmetrically formed with reference to the center line CL.

In some exemplary embodiments, the phase difference of the first input signal and the second input signal may be adjusted by adjusting the lengths of the first transmission line 123 and the second transmission line 124. For example, as shown in fig. 1, the lengths of the first transmission line 123 and the second transmission line 124 may be adjusted to be substantially the same; as shown in fig. 2, the lengths of the first transmission line 125 and the second transmission line 126 may also be adjusted to be different from each other.

For example, when the lengths of the first transmission line 123 and the second transmission line 124 are substantially the same, when input signals having a predetermined phase difference are supplied from the driver integrated circuit chip to the first signal pad 127 and the second signal pad 128, the predetermined phase difference can be supplied to the radiation pattern 121 substantially without change. In this case, it is possible to facilitate adjustment of the phase difference between the first input signal and the second input signal. For example, the phase difference of the input signal supplied by the driving integrated circuit chip may be transmitted to the radiation pattern 121 substantially as it is.

For example, when the first transmission line 125 and the second transmission line 126 have a difference in length, even if signals of the same phase are supplied to the first signal pad 127 and the second signal pad 128, a phase difference may occur between input signals supplied to the radiation pattern 122 through the first transmission line 125 and the second transmission line 126 due to the difference in length.

The antenna pattern layer may further include a ground pad 129. The ground pad 129 may be disposed around the first signal pad 127 and the second signal pad 128, electrically and physically separated from the first signal pad 127 and the second signal pad 128. For example, the pair of ground pads 129 may be disposed to face each other in the second direction with the first signal pad 127 and the second signal pad 128 interposed therebetween.

In some exemplary embodiments, the ground pad 129 may include a first ground pad 129a disposed between the first signal pad 127 and the second signal pad 128.

In some exemplary embodiments, the ground pad 129 may include a second ground pad 129b disposed opposite to the first ground pad 129a with the first signal pad 127 and the second signal pad 128 interposed therebetween.

The ground pad 129 may be disposed on the same layer or the same level (e.g., the upper surface of the dielectric layer 110) as the antenna pattern layer. In this case, the horizontal radiation characteristic can be achieved by the antenna structure body. As will be described later with reference to fig. 9, the antenna structure body may further include an antenna ground layer 130 on the bottom surface of the dielectric layer 110. In this case, the vertical radiation characteristic can be achieved by the antenna structure body.

In some embodiments, the ground pad 129 may also be omitted in consideration of the beam width (beam width) of the antenna signal.

The antenna pattern layer 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 the like, or an alloy containing at least one of these. These may be used alone or in combination of 2 or more. For example, to achieve low resistance, silver (Ag) or a silver alloy (e.g., silver-palladium-copper (APC) alloy) may be used.

In one embodiment, the antenna pattern layer 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 antenna pattern layer may also include a transparent metal oxide such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), indium zinc tin oxide (ITZO), zinc oxide (ZnOx).

In some embodiments, the antenna pattern layer may include a laminated structure of a transparent conductive oxide layer and a metal layer, and may also have, for example, a three-layer structure of a transparent conductive oxide layer-a metal layer-a transparent conductive oxide layer. In this case, the metal layer improves flexibility, and the resistance is reduced to improve signal transmission speed, and the transparent conductive oxide layer improves corrosion resistance and transparency.

Fig. 3 is a schematic plan view illustrating an antenna pattern layer of the antenna structure body of some exemplary embodiments.

Referring to fig. 3, the radiation pattern 121 may include a mesh structure. In this case, the transmittance of the radiation pattern 121 is improved, and when the antenna structure is mounted to the display device, the radiation pattern 121 can be suppressed from being visually visible to the user. In one embodiment, the first transmission line 123 and the second transmission line 124 may also be patterned together with the pattern 121 to include a grid structure.

In some exemplary embodiments, when the radiation pattern 121 includes a mesh structure, a dummy mesh pattern 140 may be configured at a periphery of the radiation pattern 121. As described with reference to fig. 3, the radiation pattern 121 includes the mesh structure, whereby the transmittance of the antenna structure body may be improved.

The dummy mesh pattern 140 is disposed at the periphery of the radiation pattern 121, thereby uniformizing the pattern arrangement of the periphery of the radiation pattern 121, so that the mesh structure or the conductive wires included therein can be prevented from being visually visible to a user of the display device.

For example, a mesh metal layer may be formed on the dielectric layer 110 and cut along a predetermined separation region to electrically and physically separate the dummy mesh pattern 140 from the radiation pattern 121, the first transmission line 123, the second transmission line 124, and the like. At this time, the radiation pattern 121, the first transmission line 123 and the second transmission line 124 may be formed with an edge or an edge pattern as shown in fig. 3 to be distinguished from the virtual mesh pattern 140, or may be distinguished from the virtual mesh pattern 140 only by being spaced apart from the virtual mesh pattern 140 without the edge or the edge pattern.

When the first transmission line 123 and the second transmission line 124 also include a mesh structure, the dummy mesh pattern 140 may also extend to the periphery of the first transmission line 123 and the second transmission line 124. In an embodiment, the first signal pads 127, the second signal pads 128, and/or the ground pads 129 may also include a mesh structure, in which case the dummy mesh pattern 140 may also extend to the periphery of the first signal pads 127, the second signal pads 128, and/or the ground pads 129.

In some embodiments, the first and

second signal pads

127 and 128 may have a solid (solid) structure. In one embodiment, ground pad 129 may also have a solid structure for noise absorption efficiency.

Fig. 4 to 7 are schematic plan views illustrating antenna pattern layers of the antenna structure body of some exemplary embodiments. A description of substantially the same structure and configuration as described with reference to fig. 1 to 3 may be omitted.

Referring to fig. 4, the first and

second transmission lines

1232 and 1242 may be formed to extend in the first and second directions, respectively. The first direction and the second direction may be parallel to virtual extension lines EL1, EL2 extending from the center of the radiation pattern 1211 toward two vertex directions adjacent to each other, respectively.

For example, the radiation pattern 1211 may have a quadrangular (e.g., rectangular or square) shape having one side parallel to the y direction. The quadrilateral may include a first vertex and a second vertex adjacent to the first vertex.

The first transmission line 1232 may extend from the first vertex along a first virtual line EL1 connecting the first vertex and the center of the radiation pattern 1211. The second transmission line 1242 may extend from the second vertex along a second virtual line EL2 connecting the second vertex and the center of the radiation pattern 1211.

In this case, the dual polarization characteristic of the antenna can be effectively realized by the first transmission line 1232 and the second transmission line 1242.

In some exemplary embodiments, an angle θ between an extending direction (first direction) of the first transmission line 1232 and an extending direction (second direction) of the second transmission line 1242₁May be 80 to 100. In this case, the multi-polarization characteristic can be effectively realized.

For example, the radiation pattern 1211 may have a substantially square shape. An angle θ between the extending direction of the first transmission line 1232 or the first virtual line EL1 and the center line CL of the radiation pattern 1211₂May be 40 to 50 deg., and preferably may be about 45 deg..

Preferably, the extending direction of the first transmission line 1232 and the extending direction of the second transmission line 1242 may be substantially orthogonal.

In some embodiments, the distance d between the

ground pads

129a, 129b and the radiation pattern 1211 may be about 1 to 2,000 μm.

In some embodiments, each of the first and

second transmission lines

1232 and 1242 may include a

parallel portion

1231, 1241 bent and extended in a direction parallel to a long or short side direction of the radiation pattern 1211. For example, the

parallel portions

1231, 1241 may be formed parallel to the y direction.

Referring to fig. 5, the radiation pattern 1211 may have a mesh structure, and the first and

second transmission lines

1232 and 1242 may have a solid (solid) structure. In this case, as the resistance of the transmission line decreases, the gain of the antenna can be improved.

Referring to fig. 6,

impedance matching patterns

1233, 1243 may be formed at the first and second vertexes where the radiation pattern 1211 is connected to the first and

second transmission lines

1232, 1242, respectively. The

impedance matching patterns

1233, 1243 may have a solid structure. In this case, the gain/radiation characteristics of the antenna can be improved.

In some embodiments, the

impedance matching patterns

1233, 1243 may be formed of a metal or an alloy forming the radiation pattern 1211, and, preferably, may be formed of the same material as the radiation pattern 1211 and the

transmission lines

1232, 1242.

In some exemplary embodiments, one side between the first transmission line 1232 and the second transmission line 1242 disposed in the radiation pattern 1211 may be formed as an edge pattern 1235. The edge pattern 1235 is one side of the radiation pattern 1211 and may define a boundary between the radiation pattern 1211 and an outside thereof.

The edge pattern 1235 may be formed of a metal or an alloy forming the radiation pattern 1211, and preferably, may be formed of the same material as the radiation pattern 1211 and the

transmission lines

1232, 1242.

By the edge pattern 1235, the contact area of the radiation pattern 1211 and the

impedance matching patterns

1233, 1243 can be increased. Thereby, it is possible to improve the feeding/signal efficiency of the

impedance matching patterns

1233, 1243 and also improve the gain characteristic through the radiation pattern 1211.

As described above, the radiation pattern 1211 has a grid structure, which may include a plurality of unit cells formed of conductive lines crossing each other. In some embodiments, the edge pattern 1235 may continuously connect the vertexes of the unit cells arranged at one side or one side of the radiation pattern 1211 connected to the

impedance matching patterns

1233, 1243 to each other.

In some exemplary embodiments, the

impedance matching patterns

1233, 1243 and the edge pattern 1235 may be disposed in a region (e.g., the peripheral region 320) where an image is not displayed when the antenna structure is mounted on the display device 300.

Referring to fig. 7, the mesh structure of the radiation pattern 1211 may include unit mesh lines. The unit lattice lines may include first and second unit lattice lines crossing each other.

In some exemplary embodiments, the first unit lattice line and the second unit lattice line may cross at an angle of about 90 °.

In some exemplary embodiments, the first unit mesh lines may be formed in parallel with an extending direction of the first transmission lines 1232, and the second unit mesh lines may be formed in parallel with an extending direction of the second transmission lines 1242.

In some exemplary embodiments, a portion of the MUL1 of the first unit gridlines may be disposed on the extension of the first transmission line 1232, and a portion of the MUL2 of the second unit gridlines may be disposed on the extension of the second transmission line 1242. In this case, since the

transmission lines

1232 and 1242 are linearly connected to the unit grid lines, the gain characteristic of the antenna can be improved, and the vertical polarization and the horizontal polarization can be driven separately with more certainty.

Referring to fig. 8, the antenna array may include a plurality of radiation patterns 121. For example, the plurality of radiation patterns 121 may be disposed at the same level on the dielectric layer 110.

By the arrangement of the plurality of radiation patterns 121, an antenna array may be formed.

Therefore, the directivity of the radiation signal can be improved. For example, the distance between the center lines CL of adjacent radiation patterns 121 among the plurality of radiation patterns 121 may be λ/2 or more.

The antenna array may transceive frequencies in about the 20GHz band and about the 30 to 40GHz band. For example, the radiation pattern 121 may include a radiation pattern for about 20GHz band and a radiation pattern for about 30 to 40GHz band. The two radiation patterns may be disposed on the dielectric layer 110.

Fig. 9 and 10 are schematic plan views illustrating antenna pattern layers of the antenna structure body of some exemplary embodiments. A description of substantially the same structures and configurations as described with reference to fig. 1 to 8 may be omitted.

Referring to fig. 9, the antenna pattern layer may include a first radiation pattern 1212, a second radiation pattern 1213, and a third radiation pattern 1214.

In some exemplary embodiments, first radiation pattern 1212, second radiation pattern 1213, and third radiation pattern 1214 may have a rectangular or square shape.

In some exemplary embodiments, the lengths and/or widths of first radiation pattern 1212, second radiation pattern 1213, and third radiation pattern 1214 may be the same as or different from each other.

The second radiation pattern 1213 may be disposed at a predetermined distance from the first radiation pattern 1212 in the first direction, and may be connected to the first radiation pattern 1212 through a third transmission line 1236 extending in the first direction. At this time, the third transmission line 1236 may connect two opposite vertices of the first and

second radiation patterns

1212 and 1213 to each other. Thus, the first transmission line 1232 extending in the first direction and connected to the first radiation pattern 1212, the third transmission line 1236 extending in the first direction from the first radiation pattern 1212 and connected to the second radiation pattern 1213, and the second radiation pattern 1213 may form one series-fed antenna.

The third radiation pattern 1214 may be disposed at a predetermined distance from the first radiation pattern 1212 in the second direction, and may be connected to the first radiation pattern 1212 through a fourth transmission line 1246 extending in the second direction. At this time, the fourth transmission line 1246 may connect two opposite vertexes of the first radiation pattern 1212 and the third radiation pattern 1214 to each other. Thus, the second transmission line 1242 extending in the second direction and connected to the first radiation pattern 1212, the fourth transmission line 1246 extending in the second direction from the first radiation pattern 1212 and connected to the third radiation pattern 1214, and the third radiation pattern 1214 can form another series-fed antenna.

According to an embodiment, the spacing a between the center of the first radiation pattern 1212 and the center of the second radiation pattern 1213, and between the center of the first radiation pattern 1212 and the center of the third radiation pattern 1214 may be λ/2 or more.

The antenna structure body of some exemplary embodiments can improve antenna gain by connecting a plurality of radiation patterns in series in the extending direction of each transmission line.

Referring to fig. 10, the antenna pattern layer may further include fourth and

fifth radiation patterns

1215 and 1216.

In some exemplary embodiments, the length and/or width of fourth radiation pattern 1215 and fifth radiation pattern 1216 may be the same as or different from the length and/or width of first radiation pattern 1212, second radiation pattern 1213, or third radiation pattern 1214.

The fourth radiation pattern 1215 may be disposed at a predetermined distance from the second radiation pattern 1213 in the first direction, and may be connected to the second radiation pattern 1213 via a fifth transmission line 1237 extending in the first direction. At this time, the fifth transmission line 1237 may connect two opposite vertices of the second radiation pattern 1213 and the fourth radiation pattern 1215 to each other. Thus, the first transmission line 1232, the first radiation pattern 1212, the third transmission line 1236, the second radiation pattern 1213, the fifth transmission line 1237, and the fourth radiation pattern 1215 may form one series-fed antenna.

The fifth radiation pattern 1216 may be disposed at a predetermined distance from the third radiation pattern 1214 in the second direction, and may be connected to the third radiation pattern 1214 by a sixth transmission line 1247 extending in the second direction. At this time, the sixth transmission line 1247 may connect two opposite vertices of the third radiation pattern 1214 and the fifth radiation pattern 1216 to each other. Thus, the second transmission line 1242, the first radiation pattern 1212, the fourth transmission line 1246, the third radiation pattern 1214, the sixth transmission line 1247, and the fifth radiation pattern 1216 can form yet another series-fed antenna.

According to an embodiment, a distance b between a center of the second radiation pattern 1213 and a center of the fourth radiation pattern 1215, and a center of the third radiation pattern 1214 and a center of the fifth radiation pattern 1216 may be λ/2 or more.

The

radiation patterns

1212, 1213, 1214, 1215, 1216 and/or the

transmission lines

1232, 1236, 1237, 1242, 1246, 1247 of fig. 9 and 10 may have a solid (solid) structure or a mesh structure.

The antenna structure of fig. 9 and 10 may include the

impedance matching patterns

1233 and 1243 and the edge pattern 1235 described above with reference to fig. 6.

On the other hand, although fig. 9 and 10 show examples including 3 or 5 radiation patterns, this is only an embodiment and the number of radiation patterns is not particularly limited.

Fig. 11 to 13 are schematic plan views illustrating an antenna array in which a plurality of antenna structures are arranged according to some exemplary embodiments. A description of substantially the same structures and configurations as described with reference to fig. 1 to 10 may be omitted.

Referring to fig. 11, an antenna array may include a plurality of antenna structures 1100 arranged to be spaced apart from each other in an x-direction. Here, the antenna structure body 1100 may be the antenna structure body of fig. 9 and 10. For example, the plurality of antenna structures 1100 may be disposed at the same level on the dielectric layer 110.

According to an embodiment, the pitch c between the antenna structures 1100 may be 0.5mm or more.

Referring to fig. 12, an antenna array may include a plurality of antenna structures 1200 at least a portion of which overlap each other in the x-direction. Here, the antenna structure 1200 may be the antenna structure of fig. 9. For example, the plurality of antenna structures 1200 may be disposed on the same level on the dielectric layer 110.

Adjacent antenna structures

1200a, 1200b may share at least one

radiation pattern

1213, 1214 with each other.

Referring to fig. 13, an antenna array may include a plurality of antenna structures 1300 at least a portion of which overlap each other in the x-direction. Here, the antenna structure 1300 may be the antenna structure of fig. 10. For example, the plurality of antenna structures 1300 may be disposed at the same level on the dielectric layer 110.

Adjacent antenna structures

1300a, 1300b may share at least one

radiation pattern

1213, 1214 with each other.

Further, the third radiation pattern 1214a of the antenna structure 1300a and the fifth radiation pattern 1216b of the adjacent antenna structure 1300b may be connected to each other through a transmission line 1249.

In the antenna array of some exemplary embodiments, the antenna gain may be improved by arranging a plurality of antenna structures to be spaced apart from each other or to be overlapped at least in part.

Fig. 14 is a schematic cross-sectional view illustrating an antenna structure of some exemplary embodiments. A description of substantially the same structures and configurations as described with reference to fig. 1 to 13 may be omitted.

Referring to fig. 14, the antenna pattern layer may include a first radiation pattern 1217, a second radiation pattern 1218, and a third radiation pattern 1219.

In some exemplary embodiments, the first radiation pattern 1217, the second radiation pattern 1218, and the third radiation pattern 1219 may have a diamond shape.

In some exemplary embodiments, the lengths and/or widths of the first radiation pattern 1217, the second radiation pattern 1218, and the third radiation pattern 1219 may be the same as or different from each other.

The second radiation pattern 1218 may be disposed at a predetermined distance from the first radiation pattern 1217 in the first direction, and connected to the first radiation pattern 1217 via a third transmission line 1238 extending in the first direction. At this time, the third transmission line 1238 may connect both sides of the first and

second radiation patterns

1217 and 1218 facing each other to each other. Thus, the first transmission line 123, the first radiation pattern 1217, the third transmission line 1238, and the second radiation pattern 1218 may form one series-fed antenna.

The third radiation pattern 1219 may be disposed at a predetermined distance from the first radiation pattern 1217 in the second direction, and pass through the fourth transmission line 1248 extending in the second direction and the first radiation pattern 1217. At this time, the fourth transmission line 1248 may connect both facing sides of the first radiation pattern 1217 and the third radiation pattern 1219 to each other. Thus, the second transmission line 124, the first radiation pattern 1217, the fourth transmission line 1248, and the third radiation pattern 1219 can form yet another series-fed antenna.

According to an embodiment, a distance e between a center of the first radiation pattern 1217 and a center of the second radiation pattern 1218, and between the center of the first radiation pattern 1217 and a center of the third radiation pattern 1219 may be λ/2 or more.

According to an embodiment, similar to fig. 10, the antenna structure may further include a fourth radiation pattern and a fifth radiation pattern. In addition, a plurality of antenna structures may be arranged similarly to fig. 11, 12, and 13 to form an antenna array.

Referring to fig. 15, the antenna structure body may further include a flexible circuit board 200 (FPCB). The antenna structure body may further include a driving Integrated Circuit (IC) chip 280 electrically connected through the flexible circuit board 200.

The antenna pattern layer 120 may be disposed on an upper surface of the dielectric layer 110. The antenna pattern layer 120 may include the radiation pattern 121, the first transmission line 123, the second transmission line 124, the first signal pad 127, and the second signal pad 128 described with reference to fig. 1, and may further include a ground pad 129 disposed at the periphery of the first signal pad 127 and the second signal pad 128.

In some embodiments, an antenna ground layer 130 may be formed on the bottom surface of the dielectric layer 110. The antenna ground layer 130 may be configured to entirely overlap the antenna pattern layer 120 in a plane direction.

In one embodiment, a conductive member of a display device or a display panel on which the antenna structure is mounted may be provided as the antenna ground layer 130. For example, the conductive member may include electrodes or wirings such as a gate electrode, source/drain electrodes, a pixel electrode, a common electrode, a data line, a scan line, and the like included in a Thin Film Transistor (TFT) array panel.

In one embodiment, for example, various structures including a conductive material disposed under the display panel may be provided as the ground layer. For example, a metal plate (e.g., a stainless steel plate such as SUS plate), a pressure sensor, a fingerprint sensor, an electromagnetic wave shielding layer, a heat sink, a digitizer (digitzer), or the like may be provided as the ground layer.

The antenna structure may be bonded or soldered to an external circuit structure at a soldering area BA. For example, the external circuit structure may include a flexible circuit board 200(FPCB) and a conductive intermediate structure.

The flexible circuit board 200 may be disposed on the antenna pattern layer 120. The flexible circuit board 200 may include a core layer 210, a circuit wiring 220, and a feed ground 230. An upper cover 250 (cover) film and a lower cover 240 (cover) film for protecting the wiring may be formed on the upper surface and the lower surface of the core layer 210, respectively.

The core layer 210 may include, for example, a resin substance having flexibility such as polyimide, epoxy, polyester, Cyclic Olefin Polymer (COP), Liquid Crystal Polymer (LCP), and the like.

The circuit wiring 220 may be disposed on one surface (e.g., a bottom surface) of the core layer 210, for example. The circuit wiring 220 may be provided as a wiring that distributes power from the driving Integrated Circuit (IC) chip 280 to the antenna pattern layer 120 or the radiation pattern 121.

According to some exemplary embodiments, the circuit wiring 220 may be electrically connected to the first and

second signal pads

127 and 128 of the antenna pattern layer 120. For example, the electrical connection may be made through a conductive intermediate structure interposed between the circuit wiring 220 and the

signal pads

127 and 128.

In some exemplary embodiments, the circuit wirings 220 may include a first circuit wiring and a second circuit wiring. The first circuit wiring may electrically connect the driving integrated circuit chip 280 and the first signal pad 127. The second circuit wiring may electrically connect the driving integrated circuit chip 280 and the second signal pad 128. By adjusting the lengths of the first circuit wiring and the second circuit wiring, the phase difference of the input signals supplied to the

radiation patterns

121, 122 can be adjusted. For example, the first circuit wiring may be formed in a straight line, and the second circuit wiring may be formed to have one or more bent portions to generate a length difference.

The conductive intermediate structure may be made of, for example, an Anisotropic Conductive Film (ACF). In this case, the conductive intermediate structure may include conductive particles (e.g., silver particles, copper particles, carbon particles, etc.) dispersed in a resin layer.

For example, the lower cover film 240 may be partially cut or removed to expose a portion of the circuit wiring 220 in the soldering area BA to be bonded to the antenna pattern layer 120. The exposed circuit wiring 220 portion and the antenna pattern layer 120 may be pressed and soldered by the conductive intermediate structure.

The power feeding ground part 230 may be disposed on the upper surface of the core layer 210. The feeding ground 230 may have a line shape or a plate shape. The feed ground 230 may function as a barrier that shields or suppresses noise or spontaneous radiation generated from the circuit wiring 220.

The circuit wiring 220 and the feed ground 230 may include metals and/or alloys described in the antenna pattern layer 120.

In some embodiments, the feed ground 230 may be electrically connected with the ground pad 129 (refer to fig. 1) of the antenna pattern layer 120 through a ground via or a ground contact (not shown) penetrating the core layer 210.

The driving IC chip 280 may be configured on the flexible circuit board 200. Power may be supplied from the driving IC chip 280 to the antenna pattern layer 120 through the circuit wiring 220. For example, a circuit or a contact for electrically connecting the driving IC chip 280 and the circuit wiring 220 may be further included in the flexible circuit board 200.

The driving IC chip 280 may supply input signals of different phases to the first signal pad 127 and the second signal pad 128 through the circuit wiring 220. The driving IC chip 280 may adjust phases of the first input signal and the second input signal. Accordingly, a plurality of polarization characteristics can be realized by the radiation pattern 121.

In some exemplary embodiments, the driving IC chip 280 may adjust supply timings of the first input signal and the second input signal. For example, the driving IC chip 280 may alternately supply the first input signal and the second input signal in sequence.

In some embodiments, the driving IC chip 280 may form a phase difference of the first input signal and the second input signal. Further, the phases of the first input signal and the second input signal may be adjusted in a state in which the phase difference between the first input signal and the second input signal is substantially fixed. Thereby, Beam-steering (Beam-steering) is enabled, so that the pointing direction of the antenna can be adjusted.

On the other hand, although fig. 15 shows an example in which the driving IC chip 280 is mounted on the flexible circuit board 200, this is only an embodiment. That is, the driving IC chip 280 may be mounted on another circuit board connected to the flexible circuit board 220. At this time, the other circuit board may be a circuit board of a display device or a display panel on which the antenna structure body is mounted.

Fig. 16 is a schematic plan view illustrating a display device of some exemplary embodiments. For example, fig. 16 illustrates an outer shape of a window including a display device.

Referring to fig. 16, the display device 300 may include a display area 310 and a peripheral area 320. The peripheral region 320 may be disposed on both sides and/or both ends of the display region 310, for example.

In some embodiments, the antenna pattern layer 120 included in the above-described antenna structure body may be inserted in the peripheral area 320 of the display device 300 in a patch form. In some embodiments, the

signal pads

127, 128 and the ground pad 129 of the antenna pattern layer 120 may be configured to correspond to the peripheral area 320 of the display device 300.

The peripheral region 320 may correspond to, for example, a light shielding portion or a frame portion of the image display device. According to some exemplary embodiments, the flexible circuit board 200 of the antenna structure body may be disposed at the peripheral area 320 to prevent image degradation in the display area 310 of the display device 300.

In addition, the driver IC chips 280 on the flexible circuit board 200 may be arranged together in the peripheral region 320. By disposing the

signal pads

127 and 128 of the antenna pattern layer 120 adjacent to the flexible circuit board 200 and the driver IC chip 280 in the peripheral region 320, the signal transmission/reception path can be shortened and the signal loss can be suppressed.

The radiation pattern 121 of the antenna pattern layer 120 may at least partially overlap the display region 310. For example, as shown in fig. 16, a grid structure may be utilized to reduce the radiation pattern 121 from being visually visible to the user.

Example 1

As shown in fig. 8, an antenna structure was prepared by forming a radiation pattern of a mesh structure and 2 transmission lines extending in mutually orthogonal directions from two vertices of the radiation pattern on a dielectric layer.

The 2 transmission lines are bent in directions parallel to each other to form parallel portions, and the 2 parallel portions are connected to the 2 signal pads, respectively.

Ground pads are formed between the 2 signal pads and on the sides.

The 2 signal pads are connected with the driving IC chip through the flexible printed circuit board.

Experimental example-confirmation of polarization characteristics

With the line structure of example 1, the electromagnetic field was analyzed by supplying a drive signal to the radiation pattern through the left signal pad by the drive IC chip to obtain the left diagram of fig. 17.

The right side diagram of fig. 17 is obtained by analyzing the electromagnetic field by supplying a driving signal to the radiation pattern through the right side signal pad by the driving IC chip.

The electromagnetic field pattern of FIG. 17 was obtained using HFSS Simulation by Ansys corporation at frequencies of about 24 to 29.5GHz and about 37 to 40 GHz.

Referring to fig. 17, when the antenna structure body is driven through the left transmission line and when the antenna structure body is driven through the right transmission line, it is confirmed that a bilaterally symmetric electromagnetic field pattern occurs.

Fig. 18 shows radiation patterns of the E-plane and the H-plane of the antenna structure when driven by the left signal pad (Port 1) and the right signal pad (Port 2).

When the antenna structure body was driven by each of the left and right signal pads, it was confirmed that radiation patterns that were bilaterally symmetrical to each other as a whole appeared. Observing the radiation pattern, it was confirmed that a similar level of gain (gain) could be obtained.

Specifically, the Theta pol radiation pattern and Phi pol radiation pattern on the E-face of Port 1 are substantially left-right symmetric with the Phi pol radiation pattern and Theta pol radiation pattern on the H-face of Port 2, respectively, and the Theta pol radiation pattern and Phi pol radiation pattern on the H-face of Port 1 are substantially left-right symmetric with the Phi pol radiation pattern and Theta pol radiation pattern on the E-face of Port 2, respectively.

At this time, the difference between the common polarization level (Theta pol; H-pol) and the cross polarization level (Phi pol; V-pol) is 10dBi or more, and it is confirmed that the gain to the Theta pol signal is high when the left signal pad is driven; the gain to the Phi pol signal is higher when driven through the right signal pad.

Example 2 and example 3

An antenna array (example 2) is formed by arranging the antenna structures of fig. 4 as shown in fig. 8. Further, an antenna array (example 3) as shown in fig. 12 is formed by arranging the antenna structures of fig. 4.

Experimental example-confirmation of antenna gain

Table 1 can be obtained by measuring the gains of the antenna array of example 2 and the antenna array of example 3.

[ Table 1]

Referring to Table 1, it was confirmed that the cross-polarization gain (co-polarization gain) of example 3 was greater than that of example 2.

Claims

1. An antenna structure, comprising:

a dielectric layer;

a radiation pattern disposed on the dielectric layer;

a first signal pad supplying a first input signal to the radiation pattern;

a second signal pad selectively supplying a second input signal to the radiation pattern;

a first transmission line connecting the first signal pad to the radiation pattern; and

a second transmission line connecting the second signal pad to the radiation pattern.

2. The antenna structure according to claim 1,

an angle between an extending direction of the first transmission line and an extending direction of the second transmission line is 80 to 100 °.

3. The antenna structure according to claim 1,

the radiation pattern has a regular polygon shape, and the first transmission line and the second transmission line are connected to adjacent both sides of the regular polygon, respectively.

4. The antenna structure according to claim 1,

the first transmission line and the second transmission line are formed in parallel to virtual extension lines extending from the center of the radiation pattern to adjacent two vertex directions of the radiation pattern, respectively.

5. The antenna structure according to claim 4,

the first transmission line and the second transmission line are bent in parallel with a long side direction or a short side direction of the radiation pattern.

6. The antenna structure according to claim 1,

the radiation pattern comprises a grid structure.

7. The antenna structure according to claim 6,

the first transmission line and the second transmission line comprise a solid structure.

8. The antenna structure according to claim 6,

an apex portion connecting the first transmission line and the second transmission line in the radiation pattern includes an impedance matching pattern of a solid structure.

9. The antenna structure according to claim 6,

an edge of the radiation pattern connecting the first transmission line and the second transmission line includes an edge pattern defining an edge of the radiation pattern.

10. The antenna structure according to claim 6,

the lattice structure includes first and second unit lines crossing each other,

a part of the first unit line is disposed on an extension line of the first transmission line, and a part of the second unit line is disposed on an extension line of the second transmission line.

11. The antenna structure according to claim 1,

the first transmission line and the second transmission line have the same length.

12. The antenna structure according to claim 1,

the first signal pad and the first transmission line are symmetrical to the second signal pad and the second transmission line with respect to a center line of the radiation pattern.

13. The antenna structure of claim 1, further comprising:

and a driver integrated circuit chip that supplies the first input signal and the second input signal to the first signal pad and the second signal pad, respectively.

14. The antenna structure of claim 13, further comprising:

a flexible circuit board including a circuit wiring electrically connected to the first signal pad and the second signal pad,

the driving integrated circuit chip is configured on the flexible circuit board and is electrically connected with the circuit wiring.

15. The antenna structure according to claim 1,

the first input signal and the second input signal are supplied separately, respectively, one of vertical polarization and horizontal polarization is realized by the first input signal, and the remaining one of the vertical polarization and the horizontal polarization is realized by the second input signal.

16. The antenna structure of claim 1, further comprising:

and an antenna ground layer disposed on the bottom surface of the dielectric layer.

17. A display device characterized in that,

comprising the antenna structure of claim 1.

18. An antenna structure, comprising:

a first radiation pattern;

a second radiation pattern arranged to be spaced apart from the first radiation pattern in a first direction;

a third radiation pattern arranged to be spaced apart from the first radiation pattern in a second direction;

a first transmission line extending in the first direction and connecting a first signal pad and the first radiation pattern;

a second transmission line extending in the second direction and connecting a second signal pad and the first radiation pattern;

a third transmission line extending in the first direction and connecting the first radiation pattern and the second radiation pattern; and

a fourth transmission line extending to the second direction and connecting the first radiation pattern and the third radiation pattern.

19. An antenna array is provided, characterized in that,

comprising a plurality of antenna structures according to claim 18.

20. An antenna array is provided, characterized in that,

the plurality of antenna structures are arranged so as to be spaced apart from each other, or so as to be at least partially overlapped with each other.