KR20190087187A - An apparatus of antenna and mobile device thereof - Google Patents

Abstract

Provided is an antenna device. The antenna device comprises: at least one dielectric layer; a plurality of first transparent electrodes disposed on a first surface of the dielectric layer and having transparency corresponding to a predetermined first value; a second transparent electrode disposed on a second surface of the dielectric layer and having transparency corresponding to a predetermined second value; and a transparent isolation element having transparency corresponding to a predetermined third value and provided to remove reciprocal coupling between at least two first transparent electrodes among the plurality of first transparent electrodes. Thus, it is possible to prevent reciprocal coupling between the plurality of antennas for implementing multiple-input and multiple-output (MIMO). In addition, the electrodes of the antenna and the isolation element for preventing reciprocal coupling are implemented transparently, and thus, it is possible to easily mount the antenna device on a front surface of a display panel for a mobile device.

Description

TECHNICAL FIELD [0001] The present invention relates to an antenna device and a mobile device using the antenna device.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device and a mobile device using the antenna device, and more particularly, to an antenna device for improving the spacing between multiple antennas and a mobile device using the antenna device.

BACKGROUND ART [0002] With the development of communication technology, a plurality of communication apparatuses that operate independently of one mobile device are often included. For example, mobile devices such as smart phones, tablet PCs, laptops, PDAs, laptops, netbooks, and the like can be used for long distance wireless communication devices such as 4G and 5G, as well as devices for short distance wireless communication such as Wi-Fi, Bluetooth, And a device for communication. Devices such as these for wireless communication, such as Bluetooth and some Wi-Fi communications, can operate in the same frequency band or adjacent frequency bands, which can cause interference between antennas for each communication.

In addition, beyond LTE to 5G, recent wireless communication technology implements MIMO technology that uses multiple antenna arrays to secure diversity, and uses 4 antennae for MIMO implementation of cellular network Has already been commercialized, and a product that implements MIMO based on eight antennas is also in the process of being launched. The plurality of antennas used to implement MIMO have performance degradation when mutual coupling occurs.

As more and more antennas are used in MIMO implementations, the space available for mounting antennas in mobile devices is becoming smaller and smaller. Not only is the mobile device becoming thinner, but the bezel that surrounds the display area of the front part is gradually decreasing and eventually the bezelless design is expected to become popular. Furthermore, since a transparent glass may be used in a housing of a mobile device, it is becoming increasingly difficult to mount a plurality of antennas that implement a conventional MIMO antenna.

Korean Published Patent Application No. 2009-0039103 ("MIMO antenna device ", Samsung Electronics Co., Ltd.)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a display device, which can prevent mutual coupling between a plurality of antennas, And to provide an antenna device capable of MIMO implementation.

It is another object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a display device and a display device that can prevent mutual coupling between a plurality of antennas, And a mobile device including an antenna device capable of MIMO implementation that can be mounted.

It should be understood, however, that the present invention is not limited to the above-described embodiments, but may be variously modified without departing from the spirit and scope of the invention.

According to an aspect of the present invention, there is provided an antenna device including at least one dielectric layer, a plurality of first dielectric layers disposed on a first surface of the dielectric layer, and 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 a predetermined third value, wherein at least two of the plurality of first transparent electrodes And a transparent isolation element that removes mutual coupling between the first transparent electrodes.

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

According to an aspect, the metallic element has a periodic pattern and can not pass the frequency of a specific band, thereby eliminating mutual coupling between the at least two first transparent electrodes.

According to an aspect of the present invention, a coupler layer is provided in 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 the opposite side of the surface of the second transparent electrode facing the dielectric layer, the second dielectric layer having a coupler layer therein, And may be a directional coupler provided in the coupler layer.

According to one aspect, the directional coupler may remove mutual coupling due to a surface wave between the at least two first transparent electrodes.

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

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

According to one aspect, 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 an aspect of the present invention, the transparent isolation element is provided in the second transparent electrode, and operates as a wide band stop band filter which prevents a frequency of a specific band from passing therethrough, so that mutual coupling between the at least two first transparent electrodes The first transparent electrode may be a microstrip monopole antenna. The first transparent electrode may be a stepped impedance resonator.

According to an aspect of the present invention, the transparent isolation element may be a slit or a meander formed on the second transparent electrode, and the second transparent electrode may be a slit or a meander, The mutual coupling between the at least two first transparent electrodes can be eliminated.

According to an aspect, the transparent isolation element may remove a mutual coupling current by connecting the at least two first transparent electrodes to cause a decoupling current to flow through the second transparent electrode .

According to an aspect of the present invention, the coupling between the first transparent electrode or the second transparent electrode and the dielectric layer is performed by bonding via an RF cable, bonding via a via process formed on the dielectric layer, noncontact capacitive coupling, Bonding by pad bonding technology, and mechanical bonding by pogo pin.

A mobile device according to another exemplary embodiment of the present invention includes 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 the second surface and having a transparency corresponding to a predetermined second value and a transparency corresponding to a predetermined third value, A first transparent electrode, a second transparent electrode, and a transparent isolation element included in the antenna device, the first transparent electrode, the second transparent electrode, and the transparent isolation element being disposed on the rear surface of the antenna device, And can be configured so as not to reduce the visibility of the display panel.

According to an aspect of the present invention, the first transparent electrode, the second transparent electrode, and the transparent isolation element are formed of a metal mesh, and the interval of the metal mesh is such that the metal mesh covers the same area for each pixel included in the display panel .

The disclosed technique may have the following effects. It is to be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, as it is not meant to imply that a particular embodiment should include all of the following effects or only the following effects.

According to the antenna apparatus of the present invention, mutual coupling between a plurality of antennas for implementing MIMO is prevented, and the electrodes of the antenna and the isolation element for preventing mutual coupling are all transparent So that it is possible to easily mount the antenna device on the front surface of the display panel of the mobile device.

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

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

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. 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 a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations 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 to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

As described above, the number of antennas for MIMO implementation is gradually increasing. On the other hand, due to the miniaturization of the bezel and the miniaturization of mobile devices, the space for mounting the antennas is becoming smaller and smaller. It is becoming more difficult.

The antenna device according to an embodiment of the present invention can prevent mutual coupling between a plurality of antennas for implementing MIMO and can completely implement isolation elements for preventing antenna and mutual coupling of the antenna, The antenna device may be arranged on the front surface of the display panel of the device. The antenna device according to an embodiment of the present invention may not lower the visibility of the user to the display panel even when the antenna device is positioned on the front surface of the display panel of the mobile device.

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

FIG. 1 shows a configuration of a metallic element-based antenna apparatus according to an embodiment of the present invention. 1, an antenna device according to an exemplary embodiment of the present invention includes at least one dielectric layer 110, a dielectric layer 110 disposed on a first surface of the dielectric layer 110, and having transparency corresponding to a predetermined first value A plurality of first transparent electrodes 120-1 and 120-2, a second transparent electrode 130 disposed on a second surface of the dielectric layer 110 and having a transparency corresponding to a predetermined second value, (For example, 120-1 and 120-2) of the plurality of first transparent electrodes 120-1 and 120-2, and a mutual coupling And a transparent isolation element 140 for removing the ring.

Here, each of the first transparent electrodes 120-1 and 120-2 may operate as an independent antenna. A plurality of antennas may function as a plurality of antennas for implementing MIMO according to one communication scheme, and each of the first transparent electrodes 120-1 and 120-2 may operate as a separate communication method according to mutually different communication methods It is possible.

Fig. 2 is an exemplary view of the antenna device of Fig. 1. Fig. According to an embodiment of the present invention, a De-correlation circuit may be implemented between a plurality of transparent or semitransparent first electrodes. 2, according to an exemplary embodiment of the present invention, the transparent isolation element 140 may include a plurality of first transparent electrodes 120-1, 120-2, and 120-3, Element (metallic element) 140-1, 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 between the first transparent electrode 120-1 and the first transparent electrode 120-2. 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 operates to remove the first And can 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 can not pass a frequency of a specific band so that at least two first transparent electrodes (for example, 120-1 and 120-2) Lt; RTI ID = 0.0 > coupling. ≪ / RTI > That is, according to one aspect, the metallic elements 140-1 and 140-2 may be periodically inserted between a plurality of transparent first electrodes to implement a non-correlation circuit. The metallic elements 140-1 and 140-2 have a band that prevents a specific frequency from passing therethrough. By using such a band, the metallic elements 140-1 and 140-2 can form a reciprocal couple between the plurality of first transparent electrodes 120-1 and 120-2 Ring can be suppressed. Here, the value of mutual coupling is to be -15 dB or less as S reference _N1.

According to one aspect, the metallic elements 140-1 and 140-2 can 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 elements 140 may be implemented as a periodic array of EBG structures. For example, the metallic element 140 has a rectangular first hollow portion 141-1 located near each side of the 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 connected in series as shown in FIG.

Here, the first transparent electrodes 120-1 and 120-2 may have a metal mesh shape having a transparency of 70% or more, and the second transparent electrode 130 may have a transparency of 70% or more And can have the shape of the secured metal mesh. On the other hand, the metallic element 140 may have a metal mesh shape with transparency of 70% or more. According to one aspect, the metallic element 140 is capable of utilizing any conductive material present in an electronic device, such as a mobile device, according to one aspect of the present invention.

4 is a configuration diagram of a non-correlated feeding network using a directional coupler, FIG. 5 shows a configuration of a first embodiment of a directional coupler-based antenna apparatus according to an embodiment of the present invention, 6 shows a configuration of a second embodiment of a directional coupler-based antenna apparatus 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), and has an indirect coupling having a size and a phase.

As shown in FIG. 5, the antenna device includes at least one dielectric layer 510, similar to that described above with reference to FIG. 1, disposed on the first side of the dielectric layer 510, A plurality of first transparent electrodes 520-1 and 520-2 having transparency; a second transparent electrode 530 disposed on the second surface of the dielectric layer 510 and having transparency corresponding to a predetermined second value; (For example, 520-1 and 520-2) among the plurality of first transparent electrodes 520-1 and 520-2, and has a transparency corresponding to the determined third value. And a transparent isolation element 540 that removes the red 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 a coupler layer 511 may be provided 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 an aspect of the present invention, by appropriately adjusting the magnitude and phase of the indirect coupling appearing in the directional coupler, a surface wave between a plurality of antennas, that is, a plurality of first transparent electrodes 520-1 and 520-2 Lt; RTI ID = 0.0 > inter-coupling < / RTI > At least two directional couplers may be provided below the first transparent electrodes 520-1 and 520-2 and over the second transparent electrode 530. [ Here, the value of mutual coupling is to be -15 dB or less as S reference _N1.

Here, the first transparent electrodes 520-1 and 520-2 may have a metal mesh shape having a transparency of 70% or more, and the second transparent electrode 530 may have a transparency of 70% or more And can have the shape of the secured metal mesh. According to one aspect, the second transparent electrode 530 is capable of utilizing any conductive material present in an electronic device including an antenna device according to one aspect of the present invention, such as a mobile device. On the other hand, the directional coupler 140 may have the shape of a metal mesh having transparency of 70% or more.

As shown in Figure 6, the antenna device is disposed on the first side of at least one dielectric layer 610, dielectric layer 610, similar to that described above with reference to Figure 1, A plurality of first transparent electrodes 620-1 and 620-2 having transparency, a second transparent electrode 630 disposed on the second surface of the dielectric layer 610 and having transparency corresponding to a predetermined second value, (For example, 620-1 and 620-2) among the plurality of first transparent electrodes 620-1 and 620-2, and has a transparency corresponding to the determined third value. Lt; RTI ID = 0.0 > 640 < / RTI >

6, an antenna device according to an aspect of the present invention includes a first transparent electrode 630 and a second transparent electrode 630. The second transparent electrode 630 is disposed on a side opposite to a surface of the second transparent electrode 630 facing the dielectric layer 610 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 a coupler layer 651 may be provided 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 an aspect of the present invention, by appropriately adjusting the magnitude and phase of the indirect coupling appearing in the directional coupler, a surface wave between a plurality of antennas, that is, a plurality of first transparent electrodes 620-1 and 620-2 Lt; RTI ID = 0.0 > inter-coupling < / RTI > Here, the directional coupler may be provided at least two below the second transparent electrode 630. Here, the value of mutual coupling is to be -15 dB or less as S reference _N1.

Here, the first transparent electrodes 620-1 and 620-2 may have a metal mesh shape having a transparency of 70% or more, and the second transparent electrode 630 may have a transparency of 70% or more And can have the shape of the secured metal mesh. According to one aspect, the second transparent electrode 630 is capable of utilizing any conductive material present in an electronic device including an antenna device according to one aspect of the present invention, such as a mobile device. On the other hand, the directional coupler 640 may have a metal mesh shape with a transparency of 70% or more.

FIG. 7 illustrates a configuration of a first embodiment of a parasitic-pattern-based antenna apparatus according to an embodiment of the present invention, and FIG. 8 illustrates a configuration of a second embodiment of a parasitic-pattern-based antenna apparatus 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. 1, the antenna device includes at least one dielectric layer 710, a plurality of first transparent electrodes 710 disposed on the first surface of the dielectric layer 710 and having a transparency corresponding to a predetermined first value, Electrodes 720-1 and 720-2, a second transparent electrode 730 disposed on the second surface of the dielectric layer 710 and having a transparency corresponding to the second predetermined value, and a second transparent electrode 730 having transparency corresponding to the predetermined third value And transparent isolation that removes mutual coupling between at least two first transparent electrodes (e.g., 720-1, 720-2) of the plurality of first transparent electrodes 720-1, 720-2. Element 740. < / RTI >

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 a parasitic pattern layer 711 may be provided between the first and second layers. Here, the transparent isolation element 740 may be at least one parasitic pattern 740-1, 740-2, or 740-3 provided in the parasitic pattern layer 711. According to one aspect, the parasitic patterns 740-1, 740-2, and 740-3 are formed by resonating with at least one of the plurality of first transparent electrodes 720-1 and 720-2, May be configured to eliminate mutual coupling between the transparent electrodes (e. G., 720-1 and 720-2). That is, a parasitic pattern is formed below the plurality of first transparent electrodes 720-1 and 720-2 and over the second transparent electrode 730, and a plurality of The degree of isolation between the antennas can be increased. The pair of first electrodes 720-1 and 720-2 that resonate with at least one of the parasitic patterns 740-1, 740-2, and 740-3, respectively, may include any combination. Here, the value of mutual coupling is to be -15 dB or less as S reference _N1.

Here, 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 illustration of the parasitic patterns 740-1, 740-2, and 740-3 in FIG. 7, and shows a meander line parasitic pattern. The parasitic patterns 740-1, 740-2, and 740-3 can be implemented by bending or twisting the transmission line.

Here, the first transparent electrodes 720-1 and 720-2 may have a metal mesh shape having a transparency of 70% or more, and the second transparent electrode 730 may have a transparency of 70% or more And can have the shape of the secured metal mesh. According to one aspect, the second transparent electrode 730 is capable of utilizing any conductive material present in an electronic device including an 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 have a metal mesh shape with 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. 1, the antenna device includes at least one dielectric layer 810, a plurality of first transparent electrodes 810 disposed on the first surface of the dielectric layer 810 and having a transparency corresponding to a predetermined first value, Electrodes 820-1 and 820-2, a second transparent electrode 830 disposed on the second surface of the dielectric layer 810 and having a transparency corresponding to the second predetermined value, and a second transparent electrode 830 having transparency corresponding to the predetermined third value And transparent isolation that removes mutual coupling between at least two first transparent electrodes (e.g., 820-1 and 820-2) of the plurality of first transparent electrodes 820-1 and 820-2. Element 840. < / RTI >

8, an antenna device according to an aspect of the present invention includes a first transparent electrode 830 and a second transparent electrode 830. The second transparent electrode 830 is disposed on a side opposite to a surface of the second transparent electrode 830 facing the dielectric layer 810 And may further include a second dielectric layer 850 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 a parasitic pattern layer 851 may be provided between the first and second layers. 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 are formed by resonating with at least one of the plurality of first transparent electrodes 820-1 and 820-2, And may be configured to eliminate mutual coupling between the transparent electrodes (e. G., 820-1 and 820-2). That is, by forming the parasitic pattern below the second transparent electrode 830, the degree of isolation between the plurality of antennas can be increased through a method of causing the parasitic pattern and the antenna to resonate. The pair of first electrodes 820-1 and 820-2 that resonate with at least one of the parasitic patterns 840-1, 840-2, and 840-3, respectively, may include any combination. Here, the value of mutual coupling is to be -15 dB or less as S reference _N1.

Here, 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 illustration of the parasitic patterns 840-1, 840-2, and 840-3 in FIG. 8, and shows a meander line parasitic pattern. The parasitic patterns 840-1, 840-2, and 840-3 can be implemented by bending or twisting the transmission line.

Here, the first transparent electrodes 820-1 and 820-2 may have a metal mesh shape having a transparency of 70% or more, and the second transparent electrode 830 may have a transparency of 70% or more And can have the shape of the secured metal mesh. According to one aspect, the second transparent electrode 830 is capable of utilizing any conductive material present in an electronic device including an antenna device according to one aspect of the present invention, such as a mobile device. On the other hand, the parasitic patterns 840-1, 840-2, and 840-3 may have a metal mesh shape with transparency of 70% or more.

FIG. 10 shows a stepped impedance resonator (SIR), FIG. 11 shows a configuration of an SIR-based antenna device according to an embodiment of the present invention, FIG. 12 shows a slit- And shows the configuration of the antenna apparatus.

Referring to FIG. 11, an SIR-based antenna apparatus according to an embodiment of the present invention will be described in detail. 11 (a) shows a top view of an SIR-based antenna device, and Fig. 11 (b) shows a bottom view of an SIR-based antenna device.

11, an antenna device according to an aspect of the present invention includes at least one dielectric layer 1110, which is disposed on the first surface of the dielectric layer 1110, similar to that described with reference to Fig. 1, A plurality of first transparent electrodes 1120-1 and 1120-2 having a transparency corresponding to a first value, a second transparent electrode 1120-1 and 1120-2 disposed on a second surface of the dielectric layer 1110 and having a transparency corresponding to a predetermined second value, (E.g., 1120-1, 1120) having a transparency corresponding to the transparent electrode 1130 and a predetermined third value and having at least two first transparent electrodes 1120-1 and 1120-2 of the plurality of first transparent electrodes 1120-1 and 1120-2 -2). ≪ / RTI >

11 (b), the transparent isolation element 1140 is provided in the second transparent electrode 1130 and operates as a wide band stop band filter which prevents the frequency of the specific band from passing therethrough, may be a stepped impedance resonator 1140 that removes the mutual coupling between at least two first transparent electrodes 1120-1 and 1120-2 as shown in Fig. In addition, the first transparent electrodes 1120-1 and 1120-2 may be a monopole antenna that feeds a microstrip. That is, the antenna device according to one aspect of the present invention can implement a circuit for achieving a high degree of isolation between a plurality of antennas on 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 to prevent a specific frequency from passing therethrough, 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.

Here, the first transparent electrodes 1120-1 and 1120-2 may have a metal mesh shape having a transparency of 70% or more, and the second transparent electrode 1130 may have a transparency of 70% or more And can have the shape of the secured metal mesh. Also, the stepped impedance resonator implemented in the layer of the second electrode 1130 may have a metal mesh shape with transparency of 70% or more. Here, the value of mutual coupling is to be -15 dB or less as S reference _N1.

12, a slit-based antenna device according to an embodiment of the present invention will be described in detail. 12 (a) shows a top view of a slit-based antenna device, and FIG. 12 (b) shows a bottom view of a slit-based antenna device.

As shown in FIG. 12, an antenna device according to an aspect of the present invention includes at least one dielectric layer 1210, similar to that described with reference to FIG. 1, disposed on a first side of a dielectric layer 1210, A plurality of first transparent electrodes 1220-1 and 1220-2 having a transparency corresponding to a first value, a second transparent electrode 1220-1 and 1220-2 disposed on a second surface of the dielectric layer 1210 and having a transparency corresponding to a predetermined second value, 1220-1, 1220-2) having a transparency corresponding to the transparent electrode 1230 and a predetermined third value and having at least two first transparent electrodes 1220-1, 1220-2 (for example, 1220-1, 1220-2) among the plurality of first transparent electrodes 1220-1, -2). ≪ / RTI >

12 (b), the transparent isolation element 1240 may be a slit or meander 1240 formed in the second transparent electrode 1230. The antenna device according to one aspect may suppress the current flowing in the second transparent electrode 1230 based on the slit or the meander 1240 formed on the second transparent electrode 1230 so that the at least two first transparent electrodes 1220- 1, 1220-2 can be eliminated. That is, by inserting a slit or a meander into a layer of a second electrode 1230 having a rectangular shape, for example, a current flowing through the second electrode 1230 is suppressed (a stop band) Mutual coupling between the antennas can be suppressed. Here, the first transparent electrodes 1220-1 and 1220-2 may be monopole antennas feeding a microstrip.

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

13 shows a configuration of an NL (Neutralization line) based antenna apparatus according to an embodiment of the present invention. 13 (a) shows a case of a monopole antenna feeding a microstrip, and Fig. 13 (b) shows a case of a monopole antenna of a CPW feeding system.

13, an antenna device according to an aspect of the present invention includes at least one dielectric layer 1310, similar to that described with reference to FIG. 1, disposed on a first side of a dielectric layer 1310, A plurality of first transparent electrodes 1320-1 and 1320-2 having a transparency corresponding to a first predetermined value and having a transparency corresponding to a predetermined third value, And transparent isolation element 1340 that removes the mutual coupling between at least two of the first transparent electrodes (e.g., 1320-1, 1320-2) among the first transparent electrodes 1320-1, 1320-2. And 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 may be configured to remove the mutual coupling current by connecting the at least two first transparent electrodes to cause a decoupling current to flow through the second transparent electrode have. According to one aspect, the transparent isolation element 1340 may be implemented as a transparent NL (Neutralization line) having a broadband characteristic at the first transparent electrode or the second transparent electrode. The transparent NL may cause a decoupling current to flow through the second electrode to remove the mutual coupling current.

Here, the first transparent electrodes 1320-1 and 1320-2 may have a shape of a metal mesh having a transparency of 70% or more and a second transparent electrode (not shown) may have a transparency of 70% Or more of the metal mesh. According to one aspect, the second transparent electrode (not shown) can utilize any conductive material present in an electronic device, such as a mobile device, including an antenna device according to one aspect of the present invention. On the other hand, the transparent NL line 1340 may have a metal mesh shape with transparency of 80% or more. Here, the value of mutual coupling can be made to be -15 dB or less on the basis of S _N1 .

Figure 14 is an illustration of a mobile device according to one embodiment of the present invention. 14, a mobile device 1400 according to one embodiment of the present invention includes at least one antenna device 1410-1, 1410-2, 1410-3, 1410-4, 1410-5, and a display panel 1420 located at the back 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 so as not to reduce the visibility of the display panel .

1, the at least one dielectric 110 is in contact with the entire lower surface of the first transparent electrodes 120-1 and 120-2, as shown in FIG. 1, for example. However, in the antenna device according to one aspect of the present invention, the dielectric may be configured to contact a part of the lower surface of the first transparent electrode. When such an antenna device is provided in the mobile device 1400 as shown in Fig. 14, the dielectric is positioned in a portion (for example, a bezel region of the mobile device) that does not overlap the display panel, And a portion that is not bonded to the dielectric can be configured to be positioned on the front surface of the display panel. Even in the case of the transparent isolation element, if the connection with the dielectric is required, the transparent isolation element and the dielectric may be combined with each other only in a portion not overlapping the display panel. Thus, 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 embodied as a transparent material, for example, a metal mesh.

The bonding between the first transparent electrode or the second transparent electrode and the dielectric layer may be performed by bonding via an RF cable, bonding via a via process formed on the dielectric layer, capacitive bonding without contact, And mechanical bonding through a pogo pin. 15 is an exemplary view illustrating an antenna device and a method of joining elements in a mobile device according to an embodiment of the present invention. 15, the coupling between the (transparent or opaque) dielectric and the transparent electrode, as shown in FIG. 15 (a), may be achieved by bonding via an FPCB RF cable, (via) process as shown in FIG. 15 (b), or may be a junction using a contact pad (bonding technique) as shown in FIG. 15 (c). 15 (d), a mechanical connection such as a pogo pin may be used, and as shown in FIG. 15 (e), a part of the top surface, one side surface, And a subsequent C-shaped junction may be provided, such that the junction and the (transparent or opaque) dielectric are joined together. Here, a thin film conductor may be used for the junction portion. On the other hand, as shown in (f) of FIG. 15, the transparent electrode is positioned below the dielectric portion, but the direct mechanical coupling is not performed, and the dielectric and the transparent electrode are coupled by the electrical coupling such as capacitive coupling It is possible. On the other hand, as shown in FIG. 15 (g), there is provided a U-shaped junction part which leads to one side of the dielectric and one side of the transparent electrode, And the one side of the (transparent or opaque) dielectric may be in the form of a junction. Even if one side of the dielectric and one side of the transparent electrode face each other as shown in FIG. 15 (h), the direct mechanical coupling is not achieved, and the dielectric and the transparent electrode Lt; / RTI > Further, as shown in Fig. 15 (i), the junction may be formed in a cubic shape extending to one side surface and a bottom surface portion of the transparent electrode, and the junction may be configured to engage with one side of the dielectric.

FIG. 16 shows an embodiment of a transparent antenna according to an embodiment of the present invention, and FIG. 17 shows a structure of a transparent antenna shown in FIG. As described above, the transparent antenna as shown in FIGS. 16 to 17 can be mounted so that the first transparent electrode is positioned on the front surface of the display panel 1420 as shown in FIG. However, deterioration of the visibility of the display panel can not be prevented simply by using a transparent electrode. 16 to 17, the first transparent electrode may be embodied, for example, of a metal mesh, and at least one of the interval, the thickness, and the arrangement angle of the metal mesh may be the luminance of the display panel and / It can affect the occurrence.

18 shows the arrangement between a transparent electrode and a display panel of a mobile device according to an embodiment of the present invention. 18, the first transparent electrode, the second transparent electrode, and the transparent isolation element may be formed of metal meshes 1820-1 and 1820-2, and the metal meshes 1820-1 and 1820-2 may be formed of metal meshes, May be set such that the metal meshes 1820-1 and 1820-2 cover the same area for each of the pixels 1810-1 and 1810-2 included in the display panel. In addition, each of the pixels 1810-1 and 1810-2 may include R, G, and B elements partitioned by barrier ribs. For example, each of the R elements 1811-1 and 1811-2 may include a metal mesh The metal meshes 1820-1 and 1820-2 can be configured so that the areas covered by the metal meshes 1820-1 and 1820-2 are the same. Therefore, the luminance degradation between the pixels can be made equal. In addition, at least one of the interval, the thickness, and the arrangement angle of the metal mesh is set in consideration of the output frequency of the display panel, so that it can be set to have at least one of an interval, a thickness and an arrangement angle that can prevent occurrence of moire phenomenon have.

Referring again to Fig. 14, there is shown a mobile device with an antenna device according to one aspect of the present invention. At least two of each of the antenna devices 1410-1, 1410-2, 1410-3, 1410-4, 1410-5 may be used to implement MIMO according to one communication mechanism, Devices 1410-1, 1410-2, 1410-3, 1410-4, 1410-5 may be implemented as stand-alone antennas that individually implement different communication mechanisms. For example, antenna devices 1410-1 and 1410-4 are used as MIMO implementation antennas for a cellular network, antenna device 1410-2 is used as an antenna for NFC, and antenna device 1410-3 is Wi -Fi / BT, and the antenna device 1410-5 can be used as an antenna for GPS. Combinations of such antenna devices may be used as any combination capable of achieving optimal performance. The antenna device according to one aspect of the present invention can be applied to a device for next generation mobile communication and can 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 wideband high isolation.

The combination of the above-described embodiments is not limited to the above-described embodiments, and various combinations and combinations of the above-described embodiments as well as the implementation and / or the necessity may be provided. In the above-described embodiments, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of steps, and some steps may occur in different orders or in a different order than the steps described above have. It will also be understood by those skilled in the art that the steps depicted in the flowchart illustrations are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention You will understand.

The foregoing embodiments include examples of various aspects. While it is not possible to describe every possible combination for expressing various aspects, one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, it is intended that the invention include all alternatives, modifications and variations that fall within the scope of the following claims.

Claims (16)

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 first predetermined value;
A second transparent electrode disposed on a second surface of the dielectric layer and having transparency corresponding to a predetermined second value; And
And a transparent isolation element having a transparency corresponding to a predetermined third value and removing mutual coupling between the at least two first transparent electrodes of the plurality of first transparent electrodes.
The method according to claim 1,
Wherein the transparent isolation element is a metallic element periodically disposed between the plurality of first transparent electrodes.
3. The method of claim 2,
Wherein the metallic element has a periodic pattern and does not pass a frequency of a particular band to eliminate mutual coupling between the at least two first transparent electrodes.
The method according to claim 1,
And a coupler layer in the dielectric layer,
Wherein the transparent isolation element is a directional coupler provided in the coupler layer.
The method according to claim 1,
Further comprising a second dielectric layer disposed on an opposite side of a surface of the second transparent electrode facing the dielectric layer, the second dielectric layer having a coupler layer therein,
Wherein the transparent isolation element is a directional coupler provided in the coupler layer.
The method according to claim 4 or 5,
Wherein the directional coupler removes mutual coupling due to a surface wave between the at least two first transparent electrodes.
The method according to claim 1,
And a parasitic pattern layer in the dielectric layer,
Wherein the transparent isolation element is at least one parasitic pattern provided in the parasitic pattern layer.
The method according to claim 1,
Further comprising a second dielectric layer disposed on an opposite side of a surface of the second transparent electrode facing the dielectric layer and having a parasitic pattern layer therein,
Wherein the transparent isolation element is at least one parasitic pattern provided in the parasitic pattern layer.
9. The method according to claim 7 or 8,
Wherein the parasitic pattern removes mutual coupling between the at least two first transparent electrodes by causing resonance with at least one of the plurality of first transparent electrodes.
10. The method of claim 9,
Wherein the parasitic pattern is one of a capacitive pad, a meander line inductor, and a directional coupler.
The method according to claim 1,
Wherein the transparent isolation element comprises a stepped portion that is provided in the second transparent electrode and that acts as a broadband stopband filter that prevents passage of a frequency in a specific band, thereby eliminating reciprocal coupling between the at least two first transparent electrodes Is a stepped impedance resonator,
Wherein the first transparent electrode is a microstrip monopole antenna.
The method according to claim 1,
The transparent isolation element may be a slit or a meander formed on the second transparent electrode,
Wherein the second transparent electrode suppresses current flowing through the second transparent electrode based on the slit or meander to eliminate mutual coupling between the at least two first transparent electrodes.
The method according to claim 1,
Wherein the transparent isolation element removes the mutual coupling current by connecting the at least two first transparent electrodes to cause a decoupling current to flow through the second transparent electrode.
The method according to claim 1,
The coupling between the first transparent electrode and the second transparent electrode,
Wherein the antenna device is any one of joining via an RF cable, joining through a via process formed in the dielectric layer, noncontact capacitive coupling, joining by a contact pad bonding technique, and mechanical joining through a pogo pin.
An antenna device according to claim 1; And
And a display panel disposed on a rear surface of the antenna device,
Wherein 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.
15. The method of claim 14,
Wherein the first transparent electrode, the second transparent electrode, and the transparent isolation element are made of a metal mesh, and the interval of the metal mesh is set so that the metal mesh covers the same area for each pixel included in the display panel. device.

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