KR102028352B1 - An apparatus of antenna and mobile device thereof - Google Patents

Abstract

An antenna device is provided. The antenna device is arranged on at least one dielectric layer, a first surface of the dielectric layer, a plurality of first transparent electrodes having a transparency corresponding to a predetermined first value, and a second surface of the dielectric layer, A transparent isolation having a second transparent electrode having a transparency corresponding to the second value and a transparency corresponding to the determined third value and removing mutual coupling between at least two first transparent electrodes of the plurality of first transparent electrodes Contains an element. Therefore, in addition to preventing mutual coupling between a plurality of antennas for implementing MIMO, all of the electrodes of the antenna and the isolation elements for preventing mutual coupling can be transparently implemented so that the antenna device can be displayed in front of the display panel of the mobile device. Can be easily mounted.

Description

Antenna device and mobile device using same {AN APPARATUS OF ANTENNA AND MOBILE DEVICE THEREOF}

The present invention relates to an antenna device and a mobile device using the same, and more particularly, to an antenna device and a mobile device using the same to improve the separation between multiple antennas.

With the development of communication technology, there are many cases where a plurality of communication devices operating independently of one mobile device are included. For example, mobile devices such as smartphones, tablet PCs, laptops, PDAs, notebooks, netbooks, etc. are not only devices for long-range wireless communication such as 4G and 5G, but also short-range wireless devices such as Wi-Fi, Bluetooth, BLE, and NFC. It includes a device for communication. Like Bluetooth and some Wi-Fi communications, devices for such wireless communications can operate in the same frequency band or in adjacent frequency bands, causing interference between antennas for each communication.

In addition, from LTE to 5G, recent wireless communication technology implements MIMO technology using multiple antenna arrays to secure diversity, and uses 4 antennas to implement MIMO of cellular network. This product has already been commercialized, and furthermore, a product implementing MIMO based on eight antennas is also about to be released. As described above, a plurality of antennas used to implement MIMO may cause performance degradation when mutual coupling occurs.

While more and more antennas are used to implement MIMO, space for mounting antennas in mobile devices is becoming less and less. Not only is the trend toward thinner mobile devices becoming thinner, the bezels surrounding the front panel display are expected to shrink and eventually bezelless designs will become popular. Furthermore, since the housing of the mobile device may also utilize transparent glass, it is increasingly difficult to mount a plurality of antennas implementing the conventional MIMO antenna.

Korean Laid-Open Patent Publication No. 2009-0039103 ("MIMO Antenna Unit", Samsung Electronics Co., Ltd.)

SUMMARY OF THE INVENTION An object of the present invention for solving the above-mentioned problems can be located on the front of a display panel by transparently implementing electrodes and isolation elements while preventing mutual coupling between a plurality of antennas, thereby easily mounting them in a small mobile device. It is to provide an antenna device capable of implementing MIMO.

Another object of the present invention to solve the above problems is to be located on the front of the display panel by transparently implementing the electrode and the isolation element while preventing mutual coupling between the plurality of antennas to facilitate the small mobile device The present invention provides a mobile device including an antenna device capable of implementing MIMO.

However, the problem to be solved of the present invention is not limited thereto, and may be variously expanded within a range without departing from the spirit and scope of the present invention.

An antenna device according to an embodiment of the present invention for achieving the above object, is arranged on at least one dielectric layer, a first surface of the dielectric layer, a plurality of first having a transparency corresponding to a predetermined first value A transparent electrode, a second transparent electrode disposed on a second surface of the dielectric layer, the second transparent electrode having a transparency corresponding to a predetermined second value, and a transparency corresponding to the predetermined third value, and at least two of the plurality of first transparent electrodes A transparent isolation element that eliminates mutual coupling between the first transparent electrodes.

According to one aspect, the transparent isolation element may be a metallic element periodically disposed between the plurality of first transparent electrodes.

According to one aspect, the metallic element may have a periodic pattern and may not pass a frequency of a specific band to remove mutual coupling between the at least two first transparent electrodes.

According to one aspect, a coupler layer is provided inside the dielectric layer, and the transparent isolation element may be a directional coupler provided in the coupler layer.

According to one aspect, the antenna device further comprises a second dielectric layer disposed on an opposite side of the surface facing the dielectric layer of the second transparent electrode and having a coupler layer therein, wherein the transparent isolation element is It may be a directional coupler provided in the coupler layer.

According to one aspect, the directional coupler can eliminate mutual coupling due to surface waves between the at least two first transparent electrodes.

According to an aspect, the antenna device may include a parasitic pattern layer inside the dielectric layer, and the transparent isolation element may be at least one parasitic pattern provided in the parasitic pattern layer.

According to one aspect, the antenna device is disposed on an opposite side of the surface facing the dielectric layer of the second transparent electrode, further comprising a second dielectric layer having a parasitic pattern layer therein, the transparent isolation element May be at least one parasitic pattern provided in the parasitic pattern layer.

In example embodiments, the parasitic pattern may eliminate mutual coupling between the at least two first transparent electrodes by causing resonance with at least one of the plurality of first transparent electrodes.

According to an aspect, the parasitic pattern may be any one of a capacitive pad, a meander line inductor, and a directional coupler.

According to one aspect, the transparent isolating element is provided in the second transparent electrode, the coupling between the at least two first transparent electrodes by operating as a wideband stop band filter to prevent passage of the frequency of a specific band A stepped impedance resonator that removes the first transparent electrode may be a microstrip monopole antenna.

According to one aspect, the transparent isolation element is a slit or meander formed in the second transparent electrode, the second transparent electrode is the second transparent electrode based on the slit or meander By suppressing the current flowing in the can be eliminated the mutual coupling between the at least two first transparent electrodes.

According to one aspect, the transparent isolation element can eliminate mutual coupling current by connecting between the at least two first transparent electrodes to flow a decoupling current through the second transparent electrode. .

According to one aspect, the coupling between the first transparent electrode or the second transparent electrode and the dielectric layer, the bonding through the RF cable, the bonding through the via process formed in the dielectric layer, a non-contact capacitive coupling, contact It can be either bonding by pad bonding technique or mechanical bonding via pogo pins.

According to another exemplary embodiment of the present invention, a mobile device may include at least one dielectric layer, a plurality of first transparent electrodes disposed on a first surface of the dielectric layer, and having a transparency corresponding to a predetermined first value. A second transparent electrode disposed on a second surface, the second transparent electrode having a transparency corresponding to a predetermined second value and a transparency corresponding to the predetermined third value, and between at least two first transparent electrodes of the plurality of first transparent electrodes; An antenna device comprising a transparent isolation element for removing mutual coupling, and a display panel located behind the antenna device, wherein the first transparent electrode, the second transparent electrode and the transparent isolation element included in the antenna device include: It may be configured not to reduce the visibility of the display panel.

According to one aspect, the first transparent electrode, the second transparent electrode and the transparent isolation element is composed of a metal mesh, the spacing of the metal mesh covers the same area for each pixel that the metal mesh is included in the display panel. It can be set to.

The disclosed technique can have the following effects. However, since a specific embodiment does not mean to include all of the following effects or only the following effects, it should not be understood that the scope of the disclosed technology is limited by this.

According to the antenna device according to the embodiment of the present invention described above, in addition to preventing mutual coupling between a plurality of antennas for implementing MIMO, all of the electrodes of the antenna and the isolation elements for preventing mutual coupling are completely transparent. The antenna device may be easily mounted on the front of the display panel of the mobile device.

Thus, the bezel of the mobile device can be further reduced to contribute to the substantial expansion of the display area and the miniaturization of the mobile device. Furthermore, it is possible to mount a larger number of antennas to mobile devices of the same size, thereby allowing higher transmission and reception performance.

1 shows a configuration of a metallic element based antenna device according to an embodiment of the present invention.
2 is an exemplary view of the antenna device of FIG. 1.
3 is an exemplary structure of a metallic element included in the antenna device of FIG.
4 is a schematic diagram of a non-correlation feeding network using a directional coupler.
5 shows a configuration of a first embodiment of a directional coupler based antenna device according to an embodiment of the present invention.
6 shows a configuration of a second embodiment of a directional coupler based antenna device according to an embodiment of the present invention.
7 shows a configuration of a first embodiment of a parasitic pattern based antenna device according to an embodiment of the present invention.
8 illustrates a configuration of a second embodiment of the parasitic pattern based antenna device according to an embodiment of the present invention.
9 is an exemplary diagram of the parasitic pattern of FIGS. 7 to 8.
10 shows a stepped impedance resonator.
11 shows a configuration of an SIR based antenna apparatus according to an embodiment of the present invention.
12 illustrates a configuration of a slit-based antenna device according to an embodiment of the present invention.
13 illustrates a configuration of an NL (neutralization line) based antenna device according to an embodiment of the present invention.
14 is an exemplary view of a mobile device according to an embodiment of the present invention.
15 is an exemplary view illustrating a device-to-device bonding method in an antenna device and a mobile device according to an embodiment of the present invention.
16 is an example of implementation of a transparent antenna according to an embodiment of the present invention.
17 shows the configuration of the transparent antenna of FIG.
18 illustrates an arrangement between a transparent electrode and a display panel of a mobile device according to an embodiment of the present invention.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. In the following description of the present invention, the same reference numerals are used for the same elements in the drawings and redundant descriptions of the same elements will be omitted.

As we saw earlier, the number of antennas for MIMO implementation is increasing, while the space for mounting antennas is decreasing due to the shrinking bezel and miniaturization of mobile devices. It's getting harder.

The antenna device according to an embodiment of the present invention, while preventing the mutual coupling between the plurality of antennas for implementing the MIMO, all the isolation elements for preventing the electrode and the mutual coupling of the antenna can be implemented in a mobile The antenna device may be arranged in front of the display panel of the device. Even if the antenna device according to an embodiment of the present invention is located in front of the display panel of the mobile device, the visibility of the user with respect to the display panel may not be reduced.

Thus, the bezel of the mobile device can be further reduced to contribute to the substantial expansion of the display area and the miniaturization of the mobile device. Furthermore, it is possible to mount a larger number of antennas to mobile devices of the same size, thereby allowing higher transmission and reception performance.

1 shows a configuration of a metallic element based antenna device according to an embodiment of the present invention. As shown in FIG. 1, an antenna device according to an embodiment of the present invention is disposed on at least one dielectric layer 110 and a first surface of the dielectric layer 110 and has a transparency corresponding to a predetermined first value. The branches are disposed on the plurality of first transparent electrodes 120-1 and 120-2, the second surface of the dielectric layer 110, and the second transparent electrode 130 and the predetermined agent having transparency corresponding to the predetermined second value. Mutual coupling between at least two first transparent electrodes (eg, 120-1, 120-2) of the plurality of first transparent electrodes 120-1, 120-2, having a transparency corresponding to three values Transparent isolation element 140 to remove the ring.

Here, each of the first transparent electrodes 120-1 and 120-2 may operate as an independent antenna. The plurality of antennas may operate as a plurality of antennas for implementing MIMO according to one communication method, and each of the first transparent electrodes 120-1 and 120-2 may operate as a separate device according to a different communication method. It may be.

2 is an exemplary view of the antenna device of FIG. 1. According to an embodiment of the present invention, a de-correlation circuit may be implemented between a plurality of transparent or translucent first electrodes. As shown in FIG. 2, according to one embodiment of the present invention, the transparent isolation element 140 is metallic disposed periodically between the plurality of first transparent electrodes 120-1, 120-2, and 120-3. Element may be a metallic element 140-1 or 140-2. For example, as shown in FIG. 2, the metallic element 140-1 is disposed between the first transparent electrode 120-1 and the first transparent electrode 120-2, and the metallic element 140-2 is disposed. May be disposed between the first transparent electrode 120-2 and the first transparent electrode 120-3. Here, the metallic element 140-1 operates to remove the mutual coupling between the first transparent electrode 120-1 and the first transparent electrode 120-2, and the metallic element 140-2 is operated in the first manner. It may operate to eliminate mutual coupling between the transparent electrode 120-2 and the first transparent electrode 120-3.

These metallic elements 140-1 and 140-2 have a periodic pattern and prevent them from passing frequencies of a specific band so as to mutually communicate between at least two first transparent electrodes (eg, 120-1 and 120-2). It may be configured to remove the enemy coupling. That is, according to one aspect, the metallic elements 140-1 and 140-2 may be periodically inserted between the plurality of transparent first electrodes to implement a non-correlation circuit. The metallic elements 140-1 and 140-2 have bands that prevent specific frequencies from passing, and utilize the bands to mutually couple the plurality of first transparent electrodes 120-1 and 120-2. The ring can be suppressed. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

According to one aspect, the metallic elements 140-1 and 140-2 may be implemented in a periodic arrangement such as an electromagnetic band gap (EBG). 3 is an exemplary structure of a metallic element included in the antenna device of FIG. As shown in FIG. 3, the metallic element 140 may be implemented as a periodic arrangement of EBG structures. For example, the metallic element 140 has a rectangular first hollow portion 141-1 located near each side of a rectangular base unit and a circular first hollow portion 141-2 located at the center of the base unit. ), And may be configured as a plurality of serial units are connected in series as shown in FIG.

Meanwhile, the first transparent electrodes 120-1 and 120-2 may have a form of a metal mesh having a transparency of 70% or more, and the second transparent electrode 130 also has a transparency of 70% or more. It may have a form of a secured metal mesh. On the other hand, the metallic element 140 may also have a form of a metal mesh having a transparency of 70% or more. According to one aspect, the metallic element 140 may utilize any conductive material present in an electronic device according to one aspect of the invention, such as a mobile device.

4 is a configuration diagram of a non-correlation feeding network using a directional coupler, and FIG. 5 illustrates a configuration of a first embodiment of a directional coupler based antenna device according to an embodiment of the present invention. 6 shows a configuration of a second embodiment of a directional coupler based antenna device according to an embodiment of the present invention.

As shown in FIG. 4, the directional coupler operates by being coupled to the first antenna Element 1 and the second antenna Element 2, respectively, and has indirect coupling having magnitude and phase.

As shown in FIG. 5, the antenna device is disposed on the at least one dielectric layer 510, the first surface of the dielectric layer 510, similar to that described above with reference to FIG. 1, and corresponds to a predetermined first value. A plurality of first transparent electrodes 520-1 and 520-2 having transparency, a second transparent electrode 530 disposed on a second surface of the dielectric layer 510, and having a transparency corresponding to a predetermined second value; A mutually correspondence between at least two first transparent electrodes (eg, 520-1 and 520-2) among the plurality of first transparent electrodes 520-1 and 520-2, having a transparency corresponding to the predetermined third value. Transparent isolation element 540 for removing the enemy coupling.

As shown in FIG. 5, the dielectric layer 510 may have a coupler layer 511 therein. That is, the dielectric layer 510 may be divided into a first layer and a second layer, and may include a coupler layer 511 between the first layer and the second layer. Here, the transparent isolation element 540 may be a directional coupler provided in the coupler layer 511. According to one aspect, the surface wave between the plurality of antennas, that is, the plurality of first transparent electrodes 520-1, 520-2 by appropriately adjusting the magnitude and phase of the indirect coupling appearing in the directional coupler It can be configured to eliminate the mutual coupling caused by). Here, two or more directional couplers may be provided below the first transparent electrodes 520-1 and 520-2 and on the second transparent electrode 530. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

Meanwhile, the first transparent electrodes 520-1 and 520-2 may have a form of a metal mesh having a transparency of 70% or more, and the second transparent electrode 530 also has a transparency of 70% or more. It may have a form of a secured metal mesh. According to one aspect, the second transparent electrode 530 may utilize any conductive material present in the electronic device including the antenna device according to one aspect of the present invention, such as a mobile device. On the other hand, the directional coupler 140 may also have a form of a metal mesh having a transparency of 70% or more.

As shown in FIG. 6, the antenna device is disposed on the at least one dielectric layer 610, the first surface of the dielectric layer 610, similar to that described above with reference to FIG. 1, and corresponds to a predetermined first value. A plurality of first transparent electrodes 620-1 and 620-2 having transparency, a second transparent electrode 630 disposed on a second surface of the dielectric layer 610, and having a transparency corresponding to a predetermined second value; A transparency between at least two first transparent electrodes (eg, 620-1 and 620-2) among the plurality of first transparent electrodes 620-1 and 620-2 having a transparency corresponding to a predetermined third value. Transparent isolation element 640 to remove the enemy coupling.

As shown in FIG. 6, an antenna device according to an aspect of the present invention may include a surface opposite to a surface facing the dielectric layer 610 of the second transparent electrode 630 (for example, FIG. 6 illustrates a bottom surface of the dielectric layer). And a second dielectric layer 650 having a coupler layer 651 therein. That is, the second dielectric layer 650 may be divided into a first layer and a second layer, and may include a coupler layer 651 between the first layer and the second layer. Here, the transparent isolation element 640 may be a directional coupler provided in the coupler layer 651. According to one aspect, a surface wave between a plurality of antennas, that is, a plurality of first transparent electrodes 620-1, 620-2 by appropriately adjusting the magnitude and phase of an indirect coupling appearing in the directional coupler. It can be configured to eliminate the mutual coupling caused by). Here, two or more directional couplers may be provided under the second transparent electrode 630. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

Meanwhile, the first transparent electrodes 620-1 and 620-2 may have a form of a metal mesh having a transparency of 70% or more, and the second transparent electrode 630 also has a transparency of 70% or more. It may have a form of a secured metal mesh. According to one aspect, the second transparent electrode 630 may utilize any conductive material present in the electronic device including the antenna device according to an aspect of the present invention, such as a mobile device. On the other hand, the directional coupler 640 may also have a form of a metal mesh having a transparency of 70% or more.

FIG. 7 shows a configuration of a first embodiment of a parasitic pattern based antenna device according to an embodiment of the present invention, and FIG. 8 shows a configuration of a second embodiment of a parasitic pattern based antenna device according to an embodiment of the present invention.

As shown in FIG. 7, the antenna device according to an aspect of the present invention may be based on a parasitic pattern. As described above with reference to FIG. 1, the antenna device includes at least one dielectric layer 710 and a plurality of first transparent layers disposed on a first surface of the dielectric layer 710 and having a transparency corresponding to a predetermined first value. A second transparent electrode 730 disposed on the second surfaces of the electrodes 720-1 and 720-2, the dielectric layer 710, and having a transparency corresponding to a predetermined second value and a transparency corresponding to the predetermined third value Transparent isolation for removing mutual coupling between at least two first transparent electrodes (eg, 720-1 and 720-2) among the plurality of first transparent electrodes 720-1 and 720-2 Element 740.

As shown in FIG. 7, the dielectric layer 710 may have a parasitic pattern layer 711 therein. That is, the dielectric layer 710 may be divided into a first layer and a second layer, and may include a parasitic pattern layer 711 between the first layer and the second layer. Here, the transparent isolation element 740 may be at least one parasitic pattern 740-1, 740-2, and 740-3 provided in the parasitic pattern layer 711. According to one aspect, the parasitic patterns 740-1, 740-2, and 740-3 may generate at least two first by resonating with at least one of the plurality of first transparent electrodes 720-1, 720-2. It may be configured to eliminate mutual coupling between the transparent electrodes (eg, 720-1, 720-2). That is, by forming a parasitic pattern below the plurality of first transparent electrodes 720-1 and 720-2 and on the upper portion of the second transparent electrode 730, the plurality of parasitic patterns and the antennas are resonant. The isolation between the antennas can be increased. The pair of first electrodes 720-1 and 720-2 that cause resonance with at least one of the parasitic patterns 740-1, 740-2, and 740-3 may include any combination. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

The parasitic patterns 740-1, 740-2, and 740-3 may be any one of a capacitive pad, a meander line inductor, and a directional coupler. FIG. 9 is an exemplary diagram of the parasitic patterns 740-1, 740-2, and 740-3 of FIG. 7, and shows a meander line parasitic pattern. The parasitic patterns 740-1, 740-2, and 740-3 may be implemented by bending or bending the transmission line.

Meanwhile, the first transparent electrodes 720-1 and 720-2 may have a form of a metal mesh having a transparency of 70% or more, and the second transparent electrode 730 also has a transparency of 70% or more. It may have a form of a secured metal mesh. According to one aspect, the second transparent electrode 730 may utilize any conductive material present in the electronic device including the antenna device according to one aspect of the present invention, such as a mobile device. On the other hand, the parasitic patterns 740-1, 740-2, and 740-3 may also have a form of a metal mesh having a transparency of 70% or more.

As shown in FIG. 8, the antenna device according to an aspect of the present invention may be based on a parasitic pattern. As described above with reference to FIG. 1, the antenna device includes at least one dielectric layer 810 and a plurality of first transparent layers disposed on a first surface of the dielectric layer 810 and having a transparency corresponding to a predetermined first value. A second transparent electrode 830 disposed on the second surfaces of the electrodes 820-1 and 820-2, the dielectric layer 810, and having a transparency corresponding to a predetermined second value and a transparency corresponding to the predetermined third value Transparent isolation for removing mutual coupling between at least two first transparent electrodes (eg, 820-1 and 820-2) among the plurality of first transparent electrodes 820-1 and 820-2. Element 840.

As shown in FIG. 8, an antenna device according to an aspect of the present invention may have a surface opposite to a surface facing the dielectric layer 810 of the second transparent electrode 830 (eg, a bottom surface of the dielectric layer in FIG. 8). And a second dielectric layer 850 disposed therein and having a parasitic pattern layer 851 therein. That is, the second dielectric layer 850 may be divided into a first layer and a second layer, and may include a parasitic pattern layer 851 between the first layer and the second layer. Here, the transparent isolation element 840 may be at least one parasitic pattern 840-1, 840-2, and 840-3 provided in the parasitic pattern layer 851. According to one aspect, the parasitic patterns 840-1, 840-2, and 840-3 may generate at least two first by resonating with at least one of the plurality of first transparent electrodes 820-1, 820-2. It may be configured to eliminate mutual coupling between the transparent electrodes (eg, 820-1, 820-2). That is, by forming a parasitic pattern under the second transparent electrode 830, the isolation between the plurality of antennas may be increased by a method of causing resonance of the parasitic pattern and the antenna. The pair of first electrodes 820-1 and 820-2 which cause resonance with at least one of the parasitic patterns 840-1, 840-2, and 840-3 may include any combination. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

The parasitic patterns 840-1, 840-2, and 840-3 may be any one of a capacitive pad, a meander line inductor, and a directional coupler. FIG. 9 is an exemplary diagram of the parasitic patterns 840-1, 840-2, and 840-3 of FIG. 8 and shows a meander line parasitic pattern. The parasitic patterns 840-1, 840-2, and 840-3 may be implemented by bending or bending the transmission line.

Meanwhile, the first transparent electrodes 820-1 and 820-2 may have a form of a metal mesh having a transparency of 70% or more, and the second transparent electrode 830 also has a transparency of 70% or more. It may have a form of a secured metal mesh. According to one aspect, the second transparent electrode 830 may utilize any conductive material present in the electronic device including the antenna device according to one aspect of the present invention, such as a mobile device. Meanwhile, the parasitic patterns 840-1, 840-2, and 840-3 may also have a form of a metal mesh having a transparency of 70% or more.

FIG. 10 illustrates a stepped impedance resonator (SIR), FIG. 11 illustrates a configuration of an SIR-based antenna device according to an embodiment of the present invention, and FIG. 12 illustrates a slit base according to an embodiment of the present invention. The configuration of the antenna device is shown.

Referring to FIG. 11, an SIR-based antenna device according to an embodiment of the present invention will be described in detail. FIG. 11A illustrates a top surface of the SIR-based antenna device, and FIG. 11B illustrates a bottom surface of the SIR-based antenna device.

As shown in FIG. 11, the antenna device according to an aspect of the present invention is disposed on the first surface of the at least one dielectric layer 1110 and the dielectric layer 1110 similarly described with reference to FIG. 1. A plurality of first transparent electrodes 1120-1 and 1120-2 having a transparency corresponding to the first value, a second surface disposed on a second surface of the dielectric layer 1110, and having a transparency corresponding to the determined second value The transparent electrode 1130 has a transparency corresponding to the predetermined third value, and at least two first transparent electrodes (eg, 1120-1 and 1120 of the plurality of first transparent electrodes 1120-1 and 1120-2). -2) transparent isolation element 1140 to eliminate mutual coupling between.

As shown in FIG. 11B, the transparent isolation element 1140 is provided in the second transparent electrode 1130 and operates as a wideband stop band filter to prevent the frequency of a specific band from passing through. It may be a stepped impedance resonator 1140 that eliminates mutual coupling between at least two first transparent electrodes 1120-1, 1120-2 as shown in (a). In addition, the first transparent electrodes 1120-1 and 1120-2 may be a monopole antenna that feeds with a microstrip. That is, the antenna device according to an aspect of the present invention may implement a circuit for achieving high isolation between the plurality of antennas in the layer of the second transparent electrode 1130 based on the SIR. Here, the SIR may be designed to operate as a wideband stopband filter so that a specific frequency does not pass, and may be configured to suppress mutual coupling between a plurality of antennas by utilizing such a band. A stepped impedance resonator as shown in FIG. 10 may be used.

Meanwhile, the first transparent electrodes 1120-1 and 1120-2 may have a form of a metal mesh having a transparency of 70% or more, and the second transparent electrode 1130 may also have a transparency of 70% or more. It may have a form of a secured metal mesh. In addition, the stepped impedance resonator implemented in the layer of the second electrode 1130 may also have a form of a metal mesh having 70% or more of transparency. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

12, a slit-based antenna device according to an embodiment of the present invention will be described in detail. FIG. 12A illustrates a top surface of the slit-based antenna device, and FIG. 12B illustrates a bottom surface of the slit-based antenna device.

As shown in FIG. 12, the antenna device according to an aspect of the present invention is disposed on the first surface of the at least one dielectric layer 1210 and the dielectric layer 1210, similarly described with reference to FIG. 1. A plurality of first transparent electrodes 1220-1 and 1220-2 having a transparency corresponding to the first value, and a second surface disposed on a second surface of the dielectric layer 1210 and having a transparency corresponding to the determined second value The transparent electrode 1230 has a transparency corresponding to the predetermined third value, and at least two first transparent electrodes (eg, 1220-1, 1220) of the plurality of first transparent electrodes 1220-1 and 1220-2. -2) transparent isolation element 1240 that eliminates mutual coupling between.

As shown in FIG. 12B, the transparent isolation element 1240 may be a slit or meander 1240 formed in the second transparent electrode 1230. According to an aspect, an antenna device may suppress at least two first transparent electrodes 1220 by suppressing a current flowing in the second transparent electrode 1230 based on a slit or meander 1240 formed in the second transparent electrode 1230. Mutual coupling between 1, 1220-2) can be eliminated. That is, for example, by inserting and deforming a slit or meander in the second electrode 1230 layer having a rectangular shape, the current flowing through the second electrode 1230 is suppressed (stop band) and the plurality of (low band) Mutual coupling between the two antennas can be suppressed. Here, the first transparent electrodes 1220-1 and 1220-2 may be a monopole antenna that feeds with a microstrip.

Meanwhile, the first transparent electrodes 1220-1 and 1220-2 may have a form of a metal mesh having a transparency of 70% or more, and have a second shape that is deformed to have a slit or meander. The transparent electrode 1230 may also have a form of a metal mesh having 70% or more of transparency. Here, the value of the mutual coupling is to be -15 dB or less based on S _N1 .

13 illustrates a configuration of an NL (neutralization line) based antenna device according to an embodiment of the present invention. FIG. 13A shows a case of a monopole antenna fed with a microstrip, and FIG. 13B shows a case of a monopole antenna of CPW feeding.

As shown in FIG. 13, the antenna device according to an aspect of the present invention is disposed on at least one dielectric layer 1310 and the first surface of the dielectric layer 1310 similarly as described based on FIG. 1. A plurality of first transparent electrodes 1320-1 and 1320-2 having a transparency corresponding to a predetermined first value, having a transparency corresponding to a predetermined third value, and having a plurality of first transparent electrodes 1320-1 , 1320-2, a transparent isolation element 1340 that eliminates mutual coupling between at least two first transparent electrodes (eg, 1320-1, 1320-2). In addition, it includes a second transparent electrode (not shown) disposed on the second surface of the dielectric layer 1310 and having a transparency corresponding to a predetermined second value.

Here, the transparent isolation element 1340 can be configured to eliminate mutual coupling current by connecting between the at least two first transparent electrodes to allow a decoupling current to flow through the second transparent electrode. have. According to one aspect, the transparent isolation element 1340 may be embodied as a transparent Neutralization line (NL) with broadband characteristics on either the first transparent electrode or the second transparent electrode. The transparent NL can cause a phase reversed to flow through the second electrode to eliminate the mutual coupling current.

Meanwhile, the first transparent electrodes 1320-1 and 1320-2 may have a form of a metal mesh having transparency of 70% or more, and the second transparent electrode (not shown) also has a transparency of 70%. It may have a form of a metal mesh secured above. According to one aspect, it is possible for the second transparent electrode (not shown) to utilize any conductive material present in the electronic device including the antenna device according to one aspect of the present invention, such as a mobile device. Meanwhile, the transparent NL line 1340 may have a form of a metal mesh having 80% or more transparency. Here, the value of the mutual coupling may be -15 dB or less based on S _N1 .

14 is an exemplary view of a mobile device according to an embodiment of the present invention. As shown in FIG. 14, the mobile device 1400 according to an embodiment of the present invention may include at least one antenna device 1410-1, 1410-2, 1410-3, 1410-4, 1410-5) and a display panel 1420 located at the rear of the antenna device. The first transparent electrode, the second transparent electrode, and the transparent isolation element included in the antenna devices 1410-1, 1410-2, 1410-3, 1410-4, and 1410-5 are configured not to reduce the visibility of the display panel. Can be.

In this regard, in the drawings illustrating embodiments of the present invention, at least one dielectric 110 is in contact with the entire lower surface of the first transparent electrodes 120-1, 120-2, for example, as shown in FIG. 1. Although shown, the antenna device according to an aspect of the present invention may be configured so that the dielectric contacts a portion of the lower surface of the first transparent electrode. When such an antenna arrangement is provided in the mobile device 1400 as shown in FIG. 14, the dielectric is located in a portion that does not overlap with the display panel (eg, the bezel area of the mobile device), and the transparent electrode is placed in the display panel. The portion not bonded to the dielectric and the portion not bonded to the dielectric may be configured to be positioned in front of the display panel. In the case of the transparent isolation element, when the bonding with the dielectric is required, the transparent isolation element and the dielectric may be combined only at a portion that does not overlap with the display panel. Accordingly, according to one aspect, the dielectric may be an opaque dielectric, and the first transparent electrode, the second transparent electrode, and the transparent isolation element may be implemented with a transparent material such as, for example, a metal mesh.

On the other hand, the bonding between the first transparent electrode or the second transparent electrode and the dielectric layer, the bonding through the RF cable, the bonding through the via process formed in the dielectric layer, the non-contact capacitive bonding, the bonding by contact pad bonding technology And mechanical bonding via a pogo pin. 15 is an exemplary view illustrating a device-to-device bonding method in an antenna device and a mobile device according to an embodiment of the present invention. More specifically with reference to FIG. 15, as shown in FIG. 15A, the coupling between the (transparent or opaque) dielectric and the transparent electrode may be a junction through an FPCB RF cable. As shown in (b) it may be a bonding through a TGV (via) process, as shown in Figure 15 (c) may be a bonding using a contact pad (bonding technique). In addition, a mechanical joint such as a pogo pin may be used as shown in FIG. 15D, and as shown in FIG. 15E, a part of an upper surface, one side, or a lower surface of the transparent electrode may be used. Subsequently, the c-shaped junction is provided, and the junction and the (transparent or opaque) dielectric may be formed in the form of junction. Here, the junction may be a thin film conductor. On the other hand, as shown in Figure 15 (f), the transparent electrode is located below the portion of the dielectric, direct mechanical coupling is not made, the coupling of the dielectric and the transparent electrode is made by electrical coupling, such as capacitive coupling It may be. Meanwhile, as shown in FIG. 15G, one side of the dielectric and one side of the transparent electrode face each other, and a c-shaped junction part extending from a part of the top surface, one side, and a bottom of the transparent electrode is provided. The junction and the one side of the (transparent or opaque) dielectric can be made in the form of bonding. As shown in FIG. 15H, even when one side of the dielectric and one side of the transparent electrode face each other, no direct mechanical coupling is made, and the dielectric and the transparent electrode are formed by electrical coupling such as capacitive coupling. May be combined. In addition, as shown in (i) of FIG. 15, the junction portion may be formed in a C shape extending from one side of the transparent electrode to a portion of the bottom surface thereof, and the junction portion may be implemented to couple to one side of the dielectric.

FIG. 16 is an example of implementation of a transparent antenna according to an embodiment of the present invention, and FIG. 17 shows a configuration of the transparent antenna of FIG. As described above, the transparent antenna as shown in FIGS. 16 to 17 may be mounted such that the first transparent electrode is positioned in front of the display panel 1420 as shown in FIG. 14. However, simply using a transparent electrode cannot prevent the visibility deterioration of the display panel. As illustrated in FIGS. 16 to 17, the first transparent electrode may be implemented with, for example, a metal mesh, and at least one of the spacing, thickness, and placement angle of the metal mesh may be used to determine luminance and / or moiré phenomena of the display panel. It can affect whether or not it occurs.

18 illustrates an arrangement between a transparent electrode and a display panel of a mobile device according to an embodiment of the present invention. As shown in FIG. 18, the first transparent electrode, the second transparent electrode, and the transparent isolation element may be composed of metal meshes 1820-1 and 1820-2, and metal meshes 1820-1 and 1820-2. The interval between the metal meshes 1820-1 and 1820-2 may be set to cover the same area for each pixel 1810-1 and 1810-2 included in the display panel. Furthermore, each pixel 1810-1, 1810-2 may include R, G, and B elements, each separated by a partition, for example, each of the R elements 1811-1, 1811-2 is a metal mesh. The metal meshes 1820-1 and 1820-2 may be configured to have the same area covered by the 1820-1 and 1820-2. Therefore, the luminance deterioration between each pixel can be made equal. In addition, at least one of the spacing, thickness, and placement angle of the metal mesh may be set in consideration of the output frequency of the display panel, and thus may be set to have at least one of spacing, thickness, and placement angle to prevent occurrence of moiré phenomenon. have.

Referring again to FIG. 14, there is shown a mobile device having an antenna device according to one aspect of the present invention. Here, at least two or more of each antenna device 1410-1, 1410-2, 1410-3, 1410-4, and 1410-5 may be used to implement MIMO according to one communication mechanism, and each antenna The apparatuses 1410-1, 1410-2, 1410-3, 1410-4, and 1410-5 may be implemented as independent antennas that individually implement different communication mechanisms. For example, antenna devices 1410-1 and 1410-4 are used as MIMO implementation antennas for cellular networks, antenna devices 1410-2 are used as antennas for NFC, and antenna devices 1410-3 are Wi-Fi. -Is used as an antenna device for Fi / BT, and the antenna device 1410-5 can be used as an antenna for GPS. Combinations of such antenna devices can be used as any combination that can produce optimal performance. The antenna device according to an aspect of the present invention may be applied to a device for next generation mobile communication, and may be used for mmWave MIMO communication through a transparent antenna. Furthermore, the transparent antenna according to the present invention can be mounted on a display by having a wide bandwidth and high isolation.

Combinations of the above-described embodiments are not limited to the above-described embodiments, and various types of combinations as well as the above-described embodiments may be provided according to implementation and / or need. In the above-described embodiments, the methods are described based on a flowchart as a series of steps or blocks, but the present invention is not limited to the order of steps, and any steps may occur in a different order or at the same time from other steps as described above. have. Also, one of ordinary skill in the art appreciates that the steps shown in the flowcharts are not exclusive, that other steps may be included, or that one or more steps in the flowcharts may be deleted without affecting the scope of the present invention. I can understand.

The foregoing embodiments include examples of various aspects. Although not all possible combinations may be described to represent the various aspects, one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, the invention is intended to embrace all other replacements, modifications and variations that fall within the scope of the following claims.

Claims (16)

delete delete delete At least one dielectric layer;
A plurality of first transparent electrodes disposed on the first surface of the dielectric layer and having a transparency corresponding to a predetermined first value;
A second transparent electrode disposed on a second surface of the dielectric layer and having a transparency corresponding to a second predetermined value; And
A transparent isolation element having a transparency corresponding to a predetermined third value, the transparent isolation element removing mutual coupling between at least two first transparent electrodes of the plurality of first transparent electrodes,
A coupler layer provided in the dielectric layer,
And the transparent isolation element is a directional coupler provided in the coupler layer.
At least one dielectric layer;
A plurality of first transparent electrodes disposed on the first surface of the dielectric layer and having a transparency corresponding to a predetermined first value;
A second transparent electrode disposed on a second surface of the dielectric layer and having a transparency corresponding to a second predetermined value; And
A transparent isolation element having a transparency corresponding to a predetermined third value, the transparent isolation element removing mutual coupling between at least two first transparent electrodes of the plurality of first transparent electrodes,
A second dielectric layer disposed on an opposite surface of the second transparent electrode to face the dielectric layer, the second dielectric layer having a coupler layer therein;
And the transparent isolation element is a directional coupler provided in the coupler layer.
The method according to claim 4 or 5,
And the directional coupler eliminates mutual coupling due to surface waves between the at least two first transparent electrodes.
delete delete delete delete At least one dielectric layer;
A plurality of first transparent electrodes disposed on the first surface of the dielectric layer and having a transparency corresponding to a predetermined first value;
A second transparent electrode disposed on a second surface of the dielectric layer and having a transparency corresponding to a second predetermined value; And
A transparent isolation element having a transparency corresponding to a predetermined third value, the transparent isolation element removing mutual coupling between at least two first transparent electrodes of the plurality of first transparent electrodes,
The transparent isolating element is stepped to remove the mutual coupling between the at least two first transparent electrodes by acting as a broadband stop band filter provided on the second transparent electrode and preventing it from passing frequencies in a specific band. A stepped impedance resonator,
And the first transparent electrode is a microstrip monopole antenna.
delete delete The method according to any one of claims 4, 5 and 11,
Coupling between the first transparent electrode or the second transparent electrode and the dielectric layer,
An antenna device, which is any one of a bonding through an RF cable, a bonding through a via process formed in the dielectric layer, a non-contact capacitive coupling, a bonding by contact pad bonding technology and a mechanical bonding through a pogo pin.
An antenna device according to any one of claims 4, 5 and 11; And
A display panel located at the rear of the antenna device;
The first transparent electrode, the second transparent electrode and the transparent isolation element included in the antenna device do not reduce the visibility of the display panel.
The method of claim 15,
The first transparent electrode, the second transparent electrode and the transparent isolation element are composed of a metal mesh, wherein the spacing of the metal mesh is set such that the metal mesh covers the same area for each pixel included in the display panel. device.

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