KR102233690B1 - Antenna device and display device including the same - Google Patents

Abstract

The antenna elements of the embodiments of the present invention include a dielectric layer, a first antenna pattern disposed over the upper, side, and lower surfaces of the dielectric layer and having a curved structure, and a second antenna pattern disposed over the side and lower surfaces of the dielectric layer and having a curved structure. It may include an antenna pattern, and may further include a third antenna pattern including a third radiation electrode disposed on the lower surface of the dielectric layer.

Description

An antenna element and a display device including the same TECHNICAL FIELD

The present invention relates to an antenna element and a display device including the same. More specifically, it relates to an antenna element including a dielectric layer and an antenna pattern, and a display device including the same.

With the recent development of the information society, wireless communication technologies such as Wi-Fi and Bluetooth are combined with display devices and implemented in the form of, for example, a smartphone. In this case, an antenna may be coupled to the display device to perform a communication function.

With the recent evolution of mobile communication technology, an antenna for performing communication in an ultra-high frequency band needs to be coupled to the display device. In addition, as the display device on which the antenna is mounted becomes thinner and lighter, the space occupied by the antenna may also decrease. Therefore, there is a limit to simultaneously implementing high frequency and wideband signal transmission and reception in a limited space. For example, in the case of recent 5G high-frequency communication, as the wavelength becomes shorter, signal transmission and reception may be blocked, and it may be necessary to implement signal transmission and reception in multi-axis directions in order to reduce signal loss.

An antenna needs to be applied to the display device in the form of a film or a patch, and in order to implement the above-described high-frequency communication, an antenna structure design for securing reliability of radiation characteristics is required despite a thin structure.

For example, Korean Patent Laid-Open No. 2016-0059291 discloses an antenna integrated with a display panel, but it may not be sufficient to secure sufficient high frequency radiation reliability within a limited space.

Korean Patent Application Publication No. 2016-0059291

An object of the present invention is to provide an antenna element having improved gain and signal transmission/reception efficiency.

An object of the present invention is to provide a display device including an antenna element having improved gain and signal transmission/reception efficiency.

1. the dielectric layer; A first antenna pattern disposed over an upper surface, a side surface, and a lower surface of the dielectric layer and having a curved structure; And a second antenna pattern disposed over the side surface and the lower surface of the dielectric layer and having a curved structure.

2. The antenna element according to the above 1, wherein the side surface of the dielectric layer has a curved shape.

3. In the above 1, the first antenna pattern includes a first radiation electrode, a first transmission line branching from and extending from the first radiation electrode, and a first signal pad connected to an end of the first transmission line, The second antenna pattern includes a second radiation electrode, a second transmission line branching from and extending from the second radiation electrode, and a second signal pad connected to an end of the second transmission line.

4. In 3 above, the first radiation electrode is disposed on the upper surface of the dielectric layer, the first transmission line is disposed on the side surface of the dielectric layer, and the first signal pad is disposed on the lower surface of the dielectric layer. Disposed on the antenna element.

5. In the above 3, the second radiation electrode is disposed on the side surface of the dielectric layer, the second signal pad is disposed on the lower surface of the dielectric layer, and the second transmission line is the second radiation electrode And extending between the second signal pads.

6. The antenna element according to the above 5, wherein the second radiation electrode has a curved shape.

7. The antenna element according to the above 5, further comprising a ground pattern buried in the dielectric layer and facing each other with the second radiation electrode and the dielectric layer therebetween.

8. In the above 3, the first antenna pattern further includes the first transmission line around the first signal pad and a first ground pad spaced apart from the first signal pad, and the second antenna pattern The antenna element further comprising: a second ground pad spaced apart from the second transmission line and the second signal pad around the second signal pad.

9. In the above 1, the dielectric layer is a preliminary dielectric layer in a planar state including a first region, a second region, and a third region so that the second region is bent so that the first region and the third region face each other. The antenna element is formed by folding, and the surface of the second region of the preliminary dielectric layer corresponds to the side surface of the dielectric layer.

10. The antenna element according to the above 1, wherein the plurality of first antenna patterns and the plurality of second antenna patterns are alternately and repeatedly arranged along a horizontal direction.

11. The antenna element according to the above 1, wherein the first antenna pattern and the second antenna pattern include a mesh structure.

12. The antenna element of the above 11, further comprising a dummy mesh pattern spaced apart from the first antenna pattern and the second antenna pattern around the first antenna pattern and the second antenna pattern.

13. The antenna element according to the above 1, further comprising a third antenna pattern including a third radiation electrode disposed on the lower surface of the dielectric layer.

14. The antenna element of the above 13, wherein the third antenna pattern further comprises a third transmission line branching and extending from the third radiation electrode, and a third signal pad connected to an end of the third transmission line.

15. The antenna element according to the above 14, wherein the third transmission line and the third signal pad are disposed on the lower surface of the dielectric layer together with the third radiation electrode.

16. In the above 9, the first region of the dielectric layer is disposed on the electrode structure included in the display panel,

The electrode structure is provided as a ground layer of the antenna pattern, the antenna element.

17. A display device comprising the antenna element according to 1 above.

The antenna element according to embodiments of the present invention may include a dielectric layer and an antenna pattern having a curved structure by being disposed over an upper surface, a side surface, and/or a lower surface of the dielectric layer. Accordingly, the antenna element may be mounted on the side of the display device, and a space occupied by the antenna element may be reduced.

The antenna pattern may be formed in plural, and the radiation electrodes of the antenna patterns may be disposed on an upper surface, a side surface, and a lower surface of the dielectric layer, respectively. Accordingly, double polarization or multi-axis direction signal transmission and reception can be implemented in a limited space, and high-frequency and broadband signal transmission and reception can be simultaneously implemented.

In some embodiments, the plurality of radiation electrodes may be alternately and repeatedly disposed on the top and side surfaces of the dielectric layer. Accordingly, radiation coverage for substantially the entire area may be implemented, thereby increasing signal transmission/reception efficiency and sensitivity.

The antenna element is applied to a display device including a mobile communication device capable of transmitting/receiving in a high frequency band of 3G or higher, for example, 5G, so that optical characteristics such as radiation characteristics and transmittance may be improved.

1 is a schematic side view showing an antenna element according to exemplary embodiments.
2 to 4 are schematic cross-sectional views illustrating antenna elements according to exemplary embodiments.
5 is a plan view illustrating an antenna element in a planar state before being bent in example embodiments.
6 is a schematic cross-sectional view illustrating an antenna element according to some exemplary embodiments.
7 is a cross-sectional view illustrating an antenna element in a planar state before being bent in some exemplary embodiments.
8 is a plan view illustrating an antenna element in a planar state before being bent in some exemplary embodiments.
9 is a schematic cross-sectional view illustrating an antenna element according to some exemplary embodiments.
10 and 11 are schematic plan views illustrating a display device according to exemplary embodiments.

Embodiments of the present invention provide an antenna element including a dielectric layer, a plurality of antenna patterns disposed over an upper surface, a side surface, and/or a lower surface of the dielectric layer and having a curved structure.

The antenna element may be, for example, a microstrip patch antenna manufactured in the form of a transparent film. The antenna element may be applied to, for example, a communication device for a high frequency or ultra high frequency band (eg, 3G, 4G, 5G mobile communication, etc.).

In addition, embodiments of the present invention provide a display device including the antenna element.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. However, the following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the contents of the present invention, so that the present invention is described in such drawings. It is limited to the matters and should not be interpreted.

1 is a schematic side view showing an antenna element according to exemplary embodiments.

In FIG. 1, two directions that are parallel to the upper surface of the dielectric layer 100 and cross each other are defined as a first direction and a second direction. For example, the first direction and the second direction may cross each other perpendicularly. A direction perpendicular to the upper surface of the dielectric layer 100 is defined as a third direction. For example, the first direction may correspond to a width direction of the antenna element, the second direction may correspond to a length direction of the antenna element, and the third direction may correspond to a thickness direction of the antenna element. The definition of the direction may be applied equally to the remaining drawings.

Referring to FIG. 1, an antenna element according to exemplary embodiments may include a dielectric layer 100, a first antenna pattern 110, and a second antenna pattern 130. In an embodiment, the antenna element may further include a third antenna pattern 150.

The dielectric layer 100 may include a first surface 100a, a second surface 100b, and a third surface 100c. For example, the first surface 100a, the second surface 100b, and the third surface 100c may correspond to the upper surface, the side surface, and the lower surface of the dielectric layer 100, respectively. For example, FIG. 1 is a side view of the second surface 100b of the dielectric layer 100 in the second direction.

The dielectric layer 100 may include an insulating material having a predetermined dielectric constant. For example, it may include a transparent resin material having flexibility that can be folded. For example, the dielectric layer 100 may include polyester resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; Cellulose resins such as diacetyl cellulose and triacetyl cellulose; 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, polyolefin having a cyclo-based or norbornene structure, and ethylene-propylene copolymer; Vinyl chloride resin; Amide resins such as nylon and aromatic polyamide; Imide resin; Polyethersulfone resin; Sulfone resin; Polyether ether ketone resin; Sulfide polyphenylene resin; Vinyl alcohol resin; Vinylidene chloride resin; Vinyl butyral resin; Allylate resin; Polyoxymethylene resin; It may contain a thermoplastic resin such as an epoxy resin. These may be used alone or in combination of two or more.

In addition, a transparent film made of a thermosetting resin such as (meth)acrylic-based, urethane-based, acrylic-urethane-based, epoxy-based, silicone-based or ultraviolet-curable resin may be used as the dielectric layer 100. In some embodiments, an adhesive film such as an optically clear adhesive (OCA) or an optically clear resin (OCR) may be included in the dielectric layer 100.

In some embodiments, the dielectric layer 100 may include an inorganic insulating material such as glass, silicon oxide, silicon nitride, and silicon oxynitride.

In some embodiments, the dielectric constant of the dielectric layer 100 may be adjusted in the range of about 1.5 to 12. When the dielectric constant exceeds about 12, signal loss of a transmission line is excessively increased, and signal sensitivity and signal efficiency may decrease during high-frequency band communication.

The antenna pattern may include a radiation electrode, a transmission line branching from and extending from the radiation electrode, and a signal pad connected to an end of the transmission line. For example, the first antenna pattern 110 may include a first radiation electrode 112, a first transmission line 114, and a first signal pad 116, and the second antenna pattern 130 is a second antenna pattern. The radiation electrode 132 may include a second transmission line 134 and a second signal pad 136, and the third antenna pattern 150 includes a third radiation electrode 152 and a third transmission line 154 And a third signal pad 156.

In one embodiment, as shown in FIG. 1, the first radiation electrode 112 of the first antenna pattern 110 is disposed on the upper surface of the dielectric layer 100, and the first transmission line 114 is the first radiation. Branching from one side of the electrode 112 may extend along the profile of the second surface 100b of the dielectric layer 100. The first signal pad 116 is connected to an end portion of the first transmission line 114 and may be disposed on the lower surface of the dielectric layer 100. The second radiation electrode 132 of the second antenna pattern 130 is disposed on the second surface 100b of the dielectric layer 100 and the second transmission line 134 is formed from one side of the second radiation electrode 132. It may be branched and extend along the profile of the second surface 100b of the dielectric layer 100. The second signal pad 136 is connected to the distal end of the second transmission line 134 and may be disposed on the lower surface of the dielectric layer 100.

In example embodiments, the third antenna pattern 150 including the third radiation electrode 152 may be disposed on the lower surface of the dielectric layer 100.

For example, the third antenna pattern 150 is a third transmission line 154 branching from and extending from the third radiation electrode 152, and a third signal pad 156 connected to an end of the third transmission line 154 The third transmission line 154 and the third signal pad 156 may be disposed on the lower surface of the dielectric layer 100 together with the third radiation electrode 152.

The radiation electrodes 112, 132, and 152 may have a polygonal plate shape, for example, as shown in FIG. 1. The shapes of the radiation electrodes 112, 132, and 152 shown in FIG. 1 are exemplary, and may be appropriately changed in consideration of radiation efficiency.

The first antenna pattern 110, the second antenna pattern 130, and the third antenna pattern 150 further include a first ground pad 118, a second ground pad 138, and a third ground pad 158, respectively. Can include. For example, the ground pads 118, 138, 158 are spaced apart from the transmission lines 114, 134, 154 and the signal pads 116, 136, 156 around the signal pads 116, 136, 156, Ground pads 118, 138, and 158 may be disposed to face each other with signal pads 116, 136, and 156 interposed therebetween. Accordingly, noise generated when transmitting and receiving a radiated signal by the ground pads 118, 138, 158 can be efficiently filtered or reduced, and a horizontal radiation characteristic can be implemented together.

In example embodiments, a plurality of antenna patterns 110, 130, and 150 may be arranged in an array form along the first direction. In addition, the first antenna pattern 110 and the second antenna pattern 130 may have the same overall length. The range of the driving frequency may be adjusted by adjusting the total length of each of the first antenna pattern 110, the second antenna pattern 130, and the third antenna pattern 150. In this case, the plurality of antenna patterns may have sensitivity to different frequencies, and accordingly, frequency coverage and gain characteristics of the antenna element may be increased.

The antenna patterns 110, 130, 150 are 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), molybdenum (Mo), It may contain calcium (Ca) or an alloy thereof. These may be used alone or in combination of two or more.

For example, the antenna patterns 110, 130, and 150 may include silver (Ag) or a silver alloy to implement low resistance, and for example, may include a silver-palladium-copper (APC) alloy. In an embodiment, the antenna pattern may include copper (Cu) or a copper alloy (eg, copper-cal?? (CuCa) alloy) in consideration of low resistance and fine line width patterning.

In some embodiments, the antenna patterns 110, 130, 150 are made of a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (ITZO), and zinc oxide (ZnOx). May include

In some embodiments, the antenna patterns 110, 130, and 150 may have a three-layer structure of a transparent conductive oxide layer-metal layer-transparent conductive oxide layer. In this case, while the flexible property is improved by the metal layer, resistance may be lowered, and corrosion resistance and transparency may be improved by the transparent conductive oxide layer.

2 to 4 are schematic cross-sectional views illustrating antenna elements according to exemplary embodiments. Specifically, FIG. 2 is a cross-sectional view taken along the line I-I' shown in FIG. 1. 3 is a cross-sectional view taken along the line II-II' shown in FIG. 1. 4 is a cross-sectional view taken along the line III-III' shown in FIG. 1.

Referring to FIG. 2, in exemplary embodiments, the first radiation electrode 112 of the first antenna pattern 110 is disposed on the first surface 100a of the dielectric layer 100, and the first transmission line ( 114 may be disposed on the second side 100b of the dielectric layer 100, and the first signal pad 116 may be disposed on the third side 100c of the dielectric layer 100.

In this case, the first ground pad 118 may also be provided as a ground layer for the first radiation electrode 112, and radiation characteristics in the third direction may be implemented through the first radiation electrode 112. have.

In some embodiments, a separate ground layer may be formed under the first radiation electrode 112, and the conductive member of the display device on which the antenna element is mounted is the ground layer for the first radiation electrode 112. It can also be provided.

The conductive member may include, for example, a gate electrode of a thin film transistor (TFT) included in a display panel, various wirings such as scan lines or data lines, or various electrodes such as pixel electrodes and common electrodes.

In some embodiments, the second surface 100b of the dielectric layer 100 may have a substantially curved shape. For example, the circumference of the second surface 100b of the dielectric layer 100 may have a curved profile substantially like a semicircle.

Referring to FIG. 3, in exemplary embodiments, the second radiation electrode 132 of the second antenna pattern 130 is disposed on the second surface 100b of the dielectric layer 100, and the second signal pad ( 136 may be disposed on the third surface 100c of the dielectric layer 100.

In this case, the second transmission line 134 extends between the second radiation electrode 132 and the second signal pad 136, and the second radiation electrode 132 curves along the side surface 100b of the dielectric layer 100. It may have a curved shape. Accordingly, the radiation coverage of the second antenna pattern 130 may be further widened through the curved second radiation electrode 132 and substantially multiaxial radiation characteristics may be realized.

Referring to FIG. 4, in exemplary embodiments, the third radiation electrode 152, the third transmission line 154, and the third signal pad 156 of the third antenna pattern 150 are formed of the dielectric layer 100. It may be disposed on the lower surface. For example, it may be disposed on the third surface 100c of the dielectric layer 100.

In this case, the third antenna pattern 150 may be utilized by patterning a conductive member of the mobile device on which the antenna element is mounted. For example, a metal coating layer, which is a component of the mobile back cover, may be patterned and used as the third antenna pattern 150.

Referring to FIG. 4, in exemplary embodiments, the third radiation electrode 152, the third transmission line 154, and the third signal pad 156 of the third antenna pattern 150 are formed of the dielectric layer 100. It may be disposed on the third surface 100c.

In this case, the third antenna pattern 150 may be utilized by patterning a conductive member of the mobile device on which the antenna element is mounted. For example, a metal coating layer, which is a component of the mobile back cover, may be patterned and used as the third antenna pattern 150. Accordingly, the space occupied by the antenna element can be reduced, and double polarization or multi-axis direction signal transmission and reception can be implemented within a limited space.

In some embodiments, a separate ground layer may be formed to overlap the third radiation electrode 152 in a vertical direction, and a conductive member of the display device on which the antenna element is mounted is attached to the third radiation electrode 152. It may also be provided as the ground layer for the.

5 is a plan view illustrating an antenna element in a planar state before being bent in example embodiments. Detailed descriptions of structures and configurations that are substantially the same as or similar to those described with reference to FIGS. 1 to 4 are omitted.

Referring to FIG. 5, in example embodiments, an antenna element in a planar state before being bent may include a preliminary dielectric layer 90 and antenna patterns 110, 130, and 150 formed on the preliminary dielectric layer 90. .

The preliminary dielectric layer 90 may refer to a dielectric layer in a planar state before being bent in the form shown in FIGS. 1 to 4, and the preliminary dielectric layer 90 includes a first region (I) and a second region (II). And a third region (III).

After forming the antenna patterns 110, 130, 150 on the preliminary dielectric layer 90, the preliminary dielectric layer 90 faces the first region I and the third region III through the second region II. Can be folded to see. For example, the second region II may be bent so that the preliminary dielectric layer may be substantially folded.

In this case, the first region I and the third region III may overlap each other in the third direction. Accordingly, after being bent, the first region (I) and the third region (III) may be provided above and below the dielectric layer 100, respectively, and the surface of the second region (II) is the second region of the dielectric layer 100. It may correspond to the surface (100b).

The first antenna pattern 110 has a first radiation electrode 112 disposed on the first region I, and the second antenna pattern 130 is a second radiation electrode 132 on the second region II Is disposed, and the third radiation electrode 152 may be disposed on the third area III of the third antenna pattern 150. In this case, the signal pads 116, 136, and 156 may be disposed on the third region III.

In example embodiments, a plurality of first antenna patterns 110 and a plurality of second antenna patterns 130 may be alternately and repeatedly arranged along a horizontal direction. Accordingly, radiation coverage for substantially the entire area may be implemented, thereby increasing signal transmission/reception efficiency and sensitivity. In addition, it may be arranged to secure a separation distance for suppressing mutual radiation interference between adjacent antenna patterns.

According to the above-described exemplary embodiments, for example, an antenna pattern is designed in a three-dimensional manner using the first surface 110a, the second surface 110b, and the third surface 110c of the dielectric layer 100. can do. Accordingly, the area occupied by the antenna pattern can be reduced, and for example, the bezel area of the image display device on which the antenna element is mounted can be reduced.

6 is a schematic cross-sectional view illustrating an antenna element according to some exemplary embodiments. 7 is a cross-sectional view illustrating an antenna element in a planar state before being bent in some exemplary embodiments. Specifically, FIGS. 6 and 7 are cross-sectional views taken along the line II-II′ shown in FIG. 1. Detailed descriptions of structures and configurations that are substantially the same as or similar to those described with reference to FIGS. 1 to 5 are omitted.

Referring to FIG. 6, the antenna element according to some exemplary embodiments is buried inside the dielectric layer 100 and faces the second radiation electrode 132 in the second direction with the dielectric layer 100 interposed therebetween. It may further include (160). Accordingly, capacitance or inductance is formed in the length direction of the antenna element, so that a frequency band in which the antenna element can be driven or sensed can be adjusted. In addition, side emission through the second surface 100b of the dielectric layer 100 may be implemented.

For example, the distance between the antenna pattern and the ground pattern 160 is 40 to 1000 μm, and in this case, the resonance frequency characteristics of the 3G to 5G high frequency band can be easily implemented.

Referring to FIG. 7, a second antenna pattern 130 may be formed on an upper surface of the preliminary dielectric layer 90, and a ground pattern 160 may be formed on a lower surface of the preliminary dielectric layer 90.

For example, the second radiation electrode 132 is formed on the upper surface of the second region (II) of the preliminary dielectric layer 90, and the second signal pad 136 is the third region of the preliminary dielectric layer 90 ( The second transmission line 134 formed on the upper surface of the part III) may extend the second radiation electrode 132 and the second signal pad 136. The ground pattern 160 may be formed on the lower surface of the second region II of the preliminary dielectric layer 90.

The preliminary dielectric layer 90 on which the second antenna pattern 130 and the ground pattern 160 are formed may be bent so that the ground pattern 160 is inserted into the dielectric layer 100 through the second region II. Accordingly, the ground pattern 160 may be substantially surrounded by the first region I and the third region III of the dielectric layer 100, and substantially inside the dielectric layer 100 as shown in FIG. 5. It can have a structure that is buried.

As shown in FIG. 6, the second radiation electrode 132 and the ground pattern 160 may have a curved pattern shape such as a C-shape. Accordingly, the radiation direction can be expanded to increase radiation coverage.

8 is a plan view illustrating an antenna element in a planar state before being bent in some exemplary embodiments.

Referring to FIG. 8, the antenna element includes antenna patterns 110, 130, 150 formed on the preliminary dielectric layer 90 and dummy mesh patterns 170 spaced apart from and arranged around the antenna patterns 110, 130, 150. Can include.

According to example embodiments, the antenna patterns 110, 130, and 150 may include a mesh structure. For example, the radiation electrodes 112, 132, 152 and the transmission lines 114, 134, 154 may include a mesh structure. Accordingly, the transmittance of the antenna patterns 110, 130, and 150 may be increased, and the flexibility of the antenna element may be improved.

In some embodiments, while employing the mesh structure, the electrode line included in the mesh structure is formed of a low-resistance metal such as copper, silver, palladium, or an alloy thereof, thereby suppressing an increase in resistance. Therefore, it is possible to effectively implement a transparent antenna element with low resistance and high sensitivity.

The dummy mesh pattern 170 and the antenna patterns 110, 130, and 150 may have substantially the same type of mesh structure. Accordingly, the electrode arrangement around the antenna pattern is uniform to prevent the mesh structure or the electrode line included therein from being visually recognized by the user of the display device to which the antenna element is applied.

9 is a schematic cross-sectional view illustrating an antenna element according to some exemplary embodiments. Specifically, FIG. 9 is a schematic diagram showing a cross section cut along the line II-II' shown in FIG. 1. Detailed descriptions of structures and configurations that are substantially the same as or similar to those described with reference to FIGS. 1 to 5 are omitted.

Referring to FIG. 9, the antenna element may be disposed on the display panel 230. For example, the display panel 230 may include a flat or curved LCD panel and an OLED panel, and the antenna element may be formed in a curved shape along the side of the display panel 230.

In example embodiments, after forming the antenna patterns 110, 130, 150 on the preliminary dielectric layer 90, the first region I and the third region III through the second region II. It may be folded to face each other, and the antenna element may be formed on the display panel 230. For example, the display panel 230 and the preliminary dielectric layer 90 may be bonded to each other through the adhesive layer, and the adhesive layer may include a material having a dielectric constant.

The display panel 230 may be provided as a ground layer of the antenna pattern. For example, the display panel 230 may include an electrode layer 210 formed on the panel substrate 220, and a conductive member of the electrode layer 210 may be provided as the ground layer of the antenna pattern.

In example embodiments, the first region I of the dielectric layer 100 may be disposed on the electrode layer 210, and the second region II of the dielectric layer 100 is a side surface of the display panel 230. Can be folded along. For example, when a curved OLED is used as the display panel 230, the first radiation electrode 112 disposed on the first region I and the second radiation electrode disposed on the second region II ( The conductive member of the display panel 230 may be used as the ground layer without having to separately form the ground layer of 132.

In some exemplary embodiments, the third region III of the dielectric layer 100 may be disposed under the display panel 230. Accordingly, a conductive member formed on the lower surface of the display panel 230 may be provided as a ground layer of the third radiation electrode 152.

10 and 11 are schematic plan views illustrating a display device according to exemplary embodiments. For example, FIG. 10 is a schematic plan view illustrating an electrode structure included in a display panel. 11 shows an external shape including a window of the display device.

Referring to FIG. 10, the display device may include the antenna element formed on the display panel 230, and the display panel 230 may include a panel substrate 220 and an electrode layer 210. For example, the display panel 230 may be a display panel such as an LCD panel or an OLED panel.

The electrode layer 210 may include a pixel structure including a thin film transistor TFT, a wiring structure, and an electrode structure. For example, a TFT including the active layer 250 included in the display panel 230, various wiring structures such as the scan line 265 and the data line 260, the source electrode 262, the gate electrode 267, An electrode structure such as the drain electrode 270 and the pixel electrode 280 may be a conductive member of the display panel 230. Accordingly, a conductive member included in the display panel 230 may be used as a ground layer without the need to form a separate ground layer under the radiation electrodes 112, 132, 152 of the antenna element.

Referring to FIG. 11, the display device 300 may include a display area 310 and a peripheral area 320. The peripheral area 320 may be disposed on both sides and/or both ends of the display area 310, for example.

The peripheral area 320 may correspond to, for example, a light blocking portion or a bezel portion of an image display device. An integrated circuit (IC) chip for controlling driving/radiation characteristics of the antenna element and supplying a feed signal may be disposed in the peripheral area 320.

The antenna element according to the above-described exemplary embodiments may be inserted into the peripheral area 320 in the form of, for example, an antenna film or an antenna patch. As described above, since the antenna element can be arranged in three dimensions through the second surface 100b or the second region II, the area or volume of the peripheral region 320 is reduced, and an image is displayed. The size of the region 310 may be relatively increased.

In an embodiment, the antenna element may be positioned at least partially in the display area 310. In this case, as described with reference to FIG. 8, the antenna pattern includes a mesh structure, and deterioration of image quality due to the antenna pattern may be prevented.

90: preliminary dielectric layer 100: dielectric layer
110: first antenna pattern 130: second antenna pattern
150: third antenna pattern 160: ground pattern
170: dummy mesh pattern 210: electrode layer
220: panel substrate 230: display panel
300: display device

Claims (17)

Dielectric layer;
A first antenna pattern disposed over an upper surface, a side surface, and a lower surface of the dielectric layer and having a curved structure; And
And a second antenna pattern disposed over the side surface and the lower surface of the dielectric layer and having a curved structure,
The first antenna pattern includes a first radiation electrode disposed on the upper surface of the dielectric layer, a first transmission line disposed on the side surface of the dielectric layer and extending from the first radiation electrode, and an upper surface of the dielectric layer. And a first signal pad disposed at and connected to an end of the first transmission line,
The second antenna pattern is connected to a second radiation electrode disposed on the side surface of the dielectric layer, a second transmission line branching and extending from the second radiation electrode, and an end of the second transmission line to be connected to the lower surface of the dielectric layer. An antenna element comprising a second signal pad disposed thereon.
The antenna element according to claim 1, wherein the side surface of the dielectric layer has a curved shape.
delete delete delete The antenna element according to claim 2, wherein the second radiation electrode has a curved shape.
The antenna element according to claim 1, further comprising a ground pattern buried in the dielectric layer and facing the second radiation electrode and the dielectric layer therebetween.
The method according to claim 1, wherein the first antenna pattern further comprises a first ground pad disposed around the first signal pad and spaced apart from the first transmission line and the first signal pad,
The second antenna pattern further comprises a second ground pad disposed around the second signal pad and spaced apart from the second transmission line and the second signal pad.
The method of claim 1, wherein the dielectric layer is formed by folding a preliminary dielectric layer in a planar state including a first region, a second region, and a third region so that the second region is bent so that the first region and the third region face each other. And
The antenna element, wherein a surface of the second region of the preliminary dielectric layer corresponds to the side surface of the dielectric layer.
The antenna element according to claim 1, wherein a plurality of the first antenna patterns and a plurality of the second antenna patterns are alternately and repeatedly arranged along a horizontal direction.
The antenna element according to claim 1, wherein the first antenna pattern and the second antenna pattern comprise a mesh structure.
The antenna element of claim 11, further comprising a dummy mesh pattern arranged around the first antenna pattern and the second antenna pattern to be spaced apart from the first antenna pattern and the second antenna pattern.
The antenna element according to claim 1, further comprising a third antenna pattern including a third radiation electrode disposed on the lower surface of the dielectric layer.
The antenna element of claim 13, wherein the third antenna pattern further comprises a third transmission line branching and extending from the third radiation electrode, and a third signal pad connected to an end of the third transmission line.
The antenna element according to claim 14, wherein the third transmission line and the third signal pad are disposed on the lower surface of the dielectric layer together with the third radiation electrode.
The method according to claim 9, wherein the first region of the dielectric layer is disposed on the electrode structure included in the display panel,
The electrode structure is provided as a ground layer of the antenna pattern, the antenna element.
A display device comprising the antenna element according to claim 1.

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