JPH11177336A - Transparent antenna and wireless communication device - Google Patents

Abstract

(57) [Problem] To provide a planar transparent antenna having a high antenna gain, capable of securing a sufficient antenna installation space outside a wireless communication device, and a wireless communication device using the same. A transparent antenna (34) is formed on a flat panel electric display (32) of a wireless communication device (30) so that a lower display state can be seen through the transparent antenna (34).
The highly conductive transparent planar radiating element 36 of the transparent antenna 34
And the highly conductive transparent planar antenna ground plane 38 is formed in a grid shape composed of a plurality of metal wires arranged in parallel with each other, or in parallel with each other so as to be orthogonal to the plurality of metal wires arranged in parallel with each other. It is a net-like metal film structure composed of a plurality of arranged metal wires, and has high transparency and high conductivity.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent antenna formed on a display such as a liquid crystal display (LCD) of a wireless communication device, and a wireless communication device using the same.

[0002]

2. Description of the Related Art The use of wireless communication devices in both established communication technologies and new communication technologies is expanding, and the trend toward miniaturization is being followed. Examples of wireless communication devices include portable small radio callers, telephones,
Television, Global Positioning Satellite System (GPS)
oning System)), etc.
(LAN (Local Area Network)). One of the main factors that affect the accuracy of these wireless devices is the antenna of the wireless device. However, this antenna
At the same time, its size is a factor that hinders miniaturization of wireless communication devices. Above all, whip type
Antennas are relatively large, and the problem that omnidirectional radiation from a transmitter held by a user has an adverse effect on the human body has recently emerged. Furthermore, since this whip antenna is provided so as to protrude from the chassis, it is easily broken.

There are two types of antennas for wireless communication devices: built-in antennas and external antennas. A so-called patch-type antenna can be used as one of naturally conceivable options. As the name implies, the patch antenna is formed in a thin film shape and is designed to be able to be laminated on an existing configuration.

FIG. 13 shows a planar structure of a conventional panel antenna 10. The panel antenna 10 includes a conductive radiating element 12 formed so as to be surrounded by a conductive antenna ground plane 14. The panel antenna 10
For example, it is formed on a PC (Polycarbonate) board including a conductor made of a copper thin film formed on an insulating film.
The radiating element 12 is patterned so as to be electrically insulated from the antenna ground plane 14. Radiating element (conductor)
The copper thin film 12 and the antenna ground plane (conductor) 14 are electrically connected to each other by etching the copper thin film until a portion 16 (shown by hatching in the figure) of the insulating film laminated on these lower surfaces is exposed. It is formed so as to be insulated.

FIG. 14 is a partial sectional view of the conventional panel antenna 10 shown in FIG. The conductive radiating element 12 and the antenna ground plane 14 formed on the insulating layer 18 are indicated by solid thin lines in the figure. The panel antenna 10 including the radiating element 12 and the antenna ground plane 14 formed on the same plane as shown in FIG. 14 has a separation distance (b) between the antenna ground planes 14 sandwiching the radiating element 12,
The width (a) of the radiating element (conductor) 12, the dielectric constant (ε _r ) of the insulating layer 18, the thickness (t) of the antenna ground plane 14, the thickness (h) of the insulating layer 18, and the effectiveness of the desired resonance frequency The design is made in consideration of a known relationship between elements such as a wavelength.

[0006]

When the above-described patch antenna is designed to have a limited size, problems such as insufficient gain or deviation of directivity may occur. Cheap. Furthermore, if a sufficient gain cannot be obtained, the electrical function of the related radio device will be impaired, causing a problem that information cannot be transmitted reliably. Even if the antenna can be externally attached to the chassis, it is difficult to attach the antenna so as to provide an appropriate communication service because the chassis itself tends to be small.

In particular, it is difficult to design an antenna for a cell type (communication zone type) telephone. Generally, half of the surface area of the cell phone body is used for switches operated by a user, such as a keypad, and an electric display surface. Usually, the keypad and the liquid crystal display are formed on the same surface of the telephone, and are designed so that the user can check the key operation while performing the operation. For this reason, it is difficult to provide an antenna on the user side of the telephone (user-interface). The user's demand for a wider display surface and higher functions is a factor that further limits the installation area of the conventional patch antenna.

[0008] Even if the antenna could be formed on the surface opposite to the surface on which the display surface of the telephone is formed, the direction of the antenna may be hemispherical or kidney shaped.
Can only provide communication services. A radio having a highly directional antenna gain often becomes unable to communicate with a base station or a radio at the destination while the telephone user is moving. at least,
In order to maintain a communicable state while moving, it is necessary to frequently change the communication destination base station, and it is difficult to perform communication using a radio having a highly directional antenna gain. Furthermore, in order to enable selection of a base station, communication of a large amount of device control information that is not directly related to user communication is required. Further, it is conceivable to adopt a configuration in which a plurality of directional antennas are used in a system to form a combined omnidirectional communication zone. However, in this case, the following problem occurs. In other words, it is natural that mounting two antennas on one radio is more difficult than mounting one antenna, and most of the surface area of the main unit is a keypad, as in the above-mentioned cellular phone. This is even more so in the configuration occupied by the liquid crystal display surface.

[0009] In many cases, a communication device includes one receiving unit and one transmitting unit that operate simultaneously at different frequencies. However, some communication devices include a plurality of receiving units and transmitting units. is there. In this case, as described above,
It is difficult to mount a plurality of antennas on one wireless device. Therefore, it is necessary to design one antenna so that it can be connected to all of various transmitters and receivers on which it is mounted, and to operate in any frequency range. In order to connect one antenna to a plurality of wireless devices, an antenna duplexer or a time division multiplex antenna switch is required. The use of these circuits not only degrades the performance of the antenna, but also requires considerable cost in the manufacture of the device and occupies a limited valuable space in the chassis.

[0010] There is also an antenna mounted so as to cover the electric display unit of a small wireless device. Woo et al. U.S. Pat. No. 5,627,548 discloses a patch antenna formed of a conductive film made of transparent indium tin oxide on a liquid crystal display device. However, the conductivity of the conductive film made of indium tin oxide used for this patch antenna is low, and therefore, the antenna gain when this conductive metal is used is low. Low gain, high current loss, and the associated IR (current × resistance) heat are factors that further limit the choice of transmitter antenna material.

[0011]

According to a first aspect of the present invention, there is provided a transparent antenna, comprising: a transparent thin film which operates at a predetermined frequency to form a transparent planar radiation formed on the transparent thin film; And an element.

The above-mentioned transparent antenna is a planar antenna formed by forming a transparent planar radiating element on a transparent thin film, and its components are transparent, so that the lower structure can be seen. ing. Therefore, when the above-described transparent antenna is provided in the wireless device, the display portion, which is one of the wireless devices having the largest surface area, can be used as the antenna installation surface, and the degree of freedom of antenna installation is increased. In addition, since the transparent antenna of the present invention has a hemispherical output range when used alone and is not omnidirectional output, the radio output (RF
If the above transparent antenna is installed so that output) is minimized, the influence on the human body can be minimized.

According to a second aspect of the present invention, there is provided a transparent antenna according to the first aspect, further comprising a transparent flat ground plane. Thereby, in addition to the effect of the invention according to claim 1, a high-performance planar transparent antenna can be obtained.

According to a third aspect of the present invention, there is provided a transparent antenna according to the second aspect, wherein the transparent plane ground plane is formed on the transparent thin film. It is characterized in that the plane radiating element and the transparent plane ground plane are formed on the same plane.

According to the above-mentioned transparent antenna, in addition to the operation of the second aspect of the present invention, the transparent flat radiating element and the transparent flat ground plane are formed on one transparent thin film, so that the film thickness is small. A transparent antenna with high transparency can be obtained.

According to a fourth aspect of the present invention, there is provided a transparent antenna according to the second aspect, further comprising a second transparent thin film laminated with the transparent thin film, wherein A planar ground plane is formed on the second transparent thin film.

According to the above-mentioned transparent antenna, in addition to the effect of the second aspect of the present invention, the transparent planar radiating element and the transparent planar ground plane are formed on separate transparent thin films to form a laminated structure. Even when the antenna installation area is relatively small, a high-gain transparent antenna can be obtained.

According to a fifth aspect of the present invention, there is provided a transparent antenna according to the first aspect, wherein the transparent planar radiating element includes a plurality of metal elements provided at predetermined intervals. It is characterized by forming a metal film structure consisting of lines.

According to the above-mentioned transparent antenna, in addition to the function of the first aspect of the present invention, the transparent planar radiating element is formed by connecting a plurality of metal wires provided at intervals so as to obtain desired transparency. By using the metal film structure used, a highly conductive transparent planar radiation element can be obtained. This makes it possible to obtain a planar transparent antenna having the same characteristics as a conventional whip antenna and mountable on a display unit.

According to a sixth aspect of the present invention, there is provided a transparent antenna according to the fifth aspect, wherein the metal film structure comprises a grid comprising a plurality of metal wires arranged in parallel with each other. It is characterized in that it is a structure or a net structure composed of a plurality of metal wires arranged in parallel with each other and a plurality of metal wires arranged in parallel with each other so as to be orthogonal to the metal wires.

According to the above-mentioned transparent antenna, in addition to the function of the fifth aspect of the present invention, the metal film structure is formed into a grid structure or a net structure, so that the uniformity with a small variation in conductivity can be relatively easily achieved. A metal film structure can be easily obtained.

According to a seventh aspect of the present invention, there is provided a transparent antenna according to the fifth or sixth aspect, wherein the metal wire having the metal film structure comprises:
From the group consisting of copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium and alloys of the above substances It is characterized by being formed of a selected material.

According to the above-mentioned transparent antenna, in addition to the effect of the invention according to the fifth or sixth aspect, a metal wire having a metal film structure is formed by each of the above-mentioned highly conductive metal substances or their alloys. Thereby, a transparent antenna having a small thickness (that is, high transparency) and a high antenna gain can be obtained.

According to an eighth aspect of the present invention, there is provided a transparent antenna according to any one of the fifth to seventh aspects, wherein each of the metal wires has a width.
1 to 30 μm, and the gap between the metal wires is 30 μm.
It is characterized by a range of m to 1 mm.

According to the above-mentioned transparent antenna, in addition to the operation of the invention according to the fifth, sixth or seventh aspect, by setting the line width of each metal line and the gap between the metal lines, the lower structure can be formed. It is possible to obtain a transparent antenna having sufficient transparency for visual observation and high antenna gain.

According to a ninth aspect of the present invention, there is provided a transparent antenna according to the fifth or sixth aspect, wherein the metal wire constituting the metal film structure is formed of indium tin, indium tin oxide, And a film selected from the group consisting of tin oxide and tin oxide, and the film is set to have a thickness of 0.1 to 10 μm.

As described above, the metal wire forming the metal film structure may be indium tin, indium tin oxide, or tin oxide. In this case, the thickness of the metal film is set to 0.1 to 10 μm. Thus, the above claim 5
In addition to the effect of the invention according to the sixth aspect, it is possible to obtain a transparent antenna having sufficient transparency for visually observing the structure below and having a high antenna gain.

It should be noted that the above-mentioned Woo et al. U.S. Pat.
The conductive film made of transparent indium tin oxide disclosed in (7,548) is not formed as a structure in which a plurality of metal wires are provided at predetermined intervals as in the present invention, but is formed as a single film. Is completely different from the above configuration.

The transparent antenna according to the tenth aspect of the present invention is
In order to solve the above-mentioned problem, in the transparent antenna according to the third aspect, it is preferable that the transparent antenna has a plurality of the transparent plane radiating elements, and the plurality of transparent plane radiating elements are formed on the same plane as the transparent plane ground plane. Features.

As described above, in addition to the operation of the third aspect of the present invention, in a configuration having a plurality of transparent plane radiating elements (that is, having a plurality of antenna units), a plurality of transparent plane radiating elements are By forming the antenna on the same plane as the ground plane, a transparent antenna having a small thickness and high transparency can be obtained.

[0031] The wireless communication apparatus according to the invention described in claim 11 is
In order to solve the above problems, a flat panel display unit, provided on the flat panel display unit, includes a transparent antenna operating at a predetermined frequency, the transparent antenna is a highly conductive transparent planar radiating element and It is characterized by including a transparent conductive ground plane.

In the above configuration, the transparent antenna is a planar antenna, and its components are transparent, so that the structure below can be seen. Therefore, as described above, the flat panel display portion, which is one of the wireless communication devices having the largest surface area, can be used as the antenna installation surface. Also, since the transparent antenna has a hemispherical output range when used alone and is not an omnidirectional output, the transparent antenna is displayed so that the radio output in the direction in which the user is located at the time of user use is minimized. If formed on the part, the effect on the human body can be minimized.

[0033] According to a twelfth aspect of the present invention, there is provided a wireless communication apparatus comprising:
In order to solve the above problem, the wireless communication device according to claim 11, further comprising a transparent thin film, wherein the transparent plane radiating element and the transparent plane ground plane of the transparent antenna are formed on the transparent thin film. It is characterized by:

According to the above construction, in addition to the function of the invention according to the eleventh aspect, by forming the transparent plane radiating element and the transparent plane ground plane on one transparent thin film, the transparency having a small film thickness is obtained. , And the visibility of the flat panel display is improved.

According to a thirteenth aspect of the present invention, there is provided a wireless communication apparatus comprising:
13. The wireless communication device according to claim 11, wherein the transparent plane radiating element and the transparent plane ground plane are formed of a plurality of metal wires provided at predetermined intervals. It is characterized by doing.

According to the above construction, in addition to the function of the invention according to the eleventh or twelfth aspect, the transparent plane radiating element and the transparent plane ground plane are provided at intervals so as to obtain desired transparency. By using a metal film structure using a plurality of metal wires, a highly conductive transparent plane radiating element and a transparent plane ground plane can be obtained. Thereby, in addition to the effect of the invention according to claim 11 or 12, it is possible to obtain a high-performance wireless communication device equipped with a planar transparent antenna having the same characteristics as the conventional wedge-shaped antenna.

According to a fourteenth aspect of the present invention,
14. The wireless communication device according to claim 13, wherein the metal film structure is a grid structure including a plurality of metal wires arranged in parallel with each other, or a plurality of metal wires arranged in parallel with each other. And a plurality of metal wires arranged in parallel with each other so as to be orthogonal to the metal wire.

According to the above construction, in addition to the function of the invention according to the thirteenth aspect, by forming the metal film structure into a grid structure or a net structure, a uniform metal having a small variation in conductivity can be relatively easily formed. A film structure can be easily obtained.

According to a fifteenth aspect of the present invention, a wireless communication apparatus
In order to solve the above problem, in the wireless communication device according to claim 13 or 14, the metal wire having the metal film structure is made of copper, aluminum, gold, silver, nickel, chrome,
Titanium, molybdenum, tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium,
It is characterized by being formed of a material selected from the group consisting of indium and an alloy of the above substances.

According to the above construction, in addition to the effect of the invention according to the thirteenth or fourteenth aspect, a metal wire having a metal film structure is formed of each of the highly conductive metal substances or their alloys. Thereby, a transparent antenna having a small film thickness (that is, high transparency) and a high antenna gain can be obtained.

The wireless communication apparatus according to the sixteenth aspect of the present invention
In order to solve the above problem, in the wireless communication device according to any one of claims 13 to 15, the width of each of the metal wires is in a range of 1 to 30 μm, and a gap between the metal wires is
It is characterized by a range of 30 μm to 1 mm.

According to the above configuration, the above-mentioned claim 13 and 1 is provided.
In addition to the effect of the invention according to 4 or 15, by setting the width of each metal line and the gap between the metal lines in the above range, sufficient transparency for visually observing the display state of the flat panel display unit is obtained. Thus, a transparent antenna having a high antenna gain can be obtained.

The wireless communication apparatus according to the seventeenth aspect of the present invention
In order to solve the above problem, in the wireless communication device according to claim 13 or 14, the metal wire forming the metal film structure is formed of a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide. The film is characterized in that the thickness is set to 0.1 to 10 μm.

According to the above configuration, in addition to the effect of the invention according to claim 13 or 14, the metal wire forming the metal film structure can be made of indium tin, indium tin oxide, or tin oxide. In this case, by setting the thickness of the metal film to 0.1 to 10 μm, it is possible to obtain a transparent antenna having sufficient transparency for viewing the display state of the flat panel display unit and having a high antenna gain. it can.

[0045] The wireless communication apparatus according to claim 18 is:
In order to solve the above problem, the wireless communication device according to claim 13 or 14, further comprising a dummy portion having a non-conductive film structure having substantially the same transparency as the metal film structure, wherein the dummy portion is formed of the metal film. It has a metal line group similar to the plurality of metal lines of the structure, and each line of the metal line group is partially cut to form a non-conductive film structure.

In the above configuration, the non-conductive dummy portion, which has substantially the same configuration as the metal film structure and is obtained by partially cutting each line of the metal wire group, has substantially the same transparency as the metal film structure.

According to the above construction, in addition to the function of the invention according to the thirteenth or fourteenth aspect, if the dummy portion is formed in a portion other than the metal film structure, the uniformity of the transparency of the entire transparent antenna is improved. I do. In particular, in the present wireless communication device, since the transparent antenna is formed on the flat panel display unit, by adjusting the uniformity of the transparency by the dummy unit when the metal film structure cannot cover the entire flat panel display unit. The visibility of the display state is improved.

The wireless communication apparatus according to the nineteenth aspect of the present invention
20. A wireless communication apparatus according to claim 11, wherein the plurality of transparent antennas have a plurality of transparent antennas, and the plurality of transparent antennas are provided with transparent planar radiation provided for each transparent antenna. An element and a transparent plane ground plane commonly used by a plurality of transparent antennas, and each transparent plane radiating element of the plurality of transparent antennas is flush with a transparent plane ground plane commonly used by a plurality of transparent antennas. It is characterized by being formed in.

According to the above configuration, in addition to the operation of the invention according to any one of claims 11 to 18, a configuration having a plurality of transparent antennas (for example, a directional antenna for obtaining an omnidirectional antenna gain pattern). A plurality of transparent antennas different from each other), one transparent ground plane is shared by a plurality of transparent antennas, and each transparent plane radiating element of the plurality of transparent antennas is flush with the transparent plane ground plane. By forming the transparent antenna on the top, a transparent antenna group having a small thickness and high transparency can be obtained, and the visibility of the flat panel display portion is improved.

According to a twentieth aspect of the present invention, a wireless communication apparatus
In order to solve the above problem, the wireless communication device according to claim 11, comprising a plurality of the transparent thin films, the plurality of transparent thin films are provided in a stacked manner, and a plurality of the transparent antennas, The transparent antenna has a transparent plane radiating element provided for each transparent antenna, and a transparent plane ground plane commonly used for a plurality of transparent antennas, and each of the plurality of transparent antennas has a transparent plane radiating element. It is characterized by being formed on a corresponding plurality of transparent thin films.

According to the above configuration, in addition to the function of the invention according to claim 11, a configuration having a plurality of transparent antennas (for example, a plurality of transparent antennas having different directivities in order to obtain an omnidirectional antenna gain pattern). Etc.)
In this case, by sharing one transparent plane ground plane with a plurality of transparent antennas, it contributes to the thinning of the transparent antenna group as in the nineteenth aspect. Further, by forming the transparent planar radiating elements of the plurality of transparent antennas on separate transparent thin films to form a laminated structure, even when the flat panel display section (that is, the antenna installation surface) is relatively small, the transparent antenna with high gain can be obtained. An antenna group can be obtained.

The wireless communication apparatus according to the twenty-first aspect is
In order to solve the above problem, the wireless communication device according to claim 11, further comprising: a first transparent thin film on which the transparent planar radiating element is mounted; and a first transparent thin film, It is characterized by including a second transparent thin film on which the transparent plane ground plane is mounted.

According to the above construction, in addition to the function of the invention according to the eleventh aspect, by forming the transparent plane radiating element and the transparent plane ground plane on separate transparent thin films to form a laminated structure, In addition to the function of the invention according to claim 11,
Even when the flat panel display section (that is, the antenna installation surface) is relatively small, a high-gain transparent antenna can be obtained.

The wireless communication apparatus according to the invention of claim 22 is:
In order to solve the above problem, the wireless communication apparatus according to claim 11, further comprising a second transparent plane radiating element formed on the same plane as the transparent plane radiating element.
Wherein the two transparent planar radiating elements coexist in an interleaved metal film structure;
The metal film structure is characterized by comprising a plurality of metal wires provided at predetermined intervals.

According to the above construction, in addition to the function of the invention according to the eleventh aspect, in the construction having two transparent antennas, the transparent plane radiating elements of each transparent antenna are arranged in a single metal sheet by mutual arrangement. By coexisting in the film structure, in addition to the effect of the invention according to claim 11,
Two transparent antennas having a small thickness (that is, high transparency) and a high gain can be obtained.

According to a twenty-third aspect of the present invention, a wireless communication apparatus
In order to solve the above-mentioned problem, a wireless communication device for communicating information in a plurality of frequency bands, comprising: a first receiving unit having an input unit for receiving information at a first frequency; A second receiving section having an input section for receiving information at a second frequency different from the frequency, a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane, A first transparent antenna that is operatively connected to the second receiver, but is not connected to the second receiver, a highly conductive transparent planar radiating element, and a highly conductive transparent planar ground plane; While operatively connected to the second receiver, the first
And a second transparent antenna that is not connected to the receiving unit, and the transparent plane radiating element and the transparent plane ground plane form a metal film structure including a plurality of metal wires provided at predetermined intervals. It is characterized by:

The transparent plane radiating element and the transparent plane ground plane of the first and second transparent antennas having the above-described configuration form a metal film structure composed of a plurality of metal wires provided at predetermined intervals, and have a profile thereof. Is small, these two antennas can be mounted even when the antenna installation area is relatively small. In the wireless communication device of the present invention, the first and second transparent antennas are connected to the first and second transparent antennas.
By using the antennas as dedicated antennas for the receiving unit, it is possible to omit an antenna duplexer or a time division multiplex antenna switch required when one antenna is used as in the related art. As a result, not only can the antenna performance be improved, but also the manufacturing cost of the device can be reduced and the space in the device chassis can be reduced.

The wireless communication device according to the invention of claim 24 is:
In order to solve the above-mentioned problem, a wireless communication device that performs information communication in a plurality of frequency ranges, the receiving unit including an input unit that receives information at a first frequency, A transmitter having an input for receiving information at a second different frequency; a highly conductive transparent planar radiating element and a highly conductive transparent planar ground plane, one operatively connected to the receiver; A first transparent antenna that is not connected to the transmitting unit, including a highly conductive transparent planar emitting element and a highly conductive transparent flat ground plane, and operably connected to the transmitting unit; A second transparent antenna that is not connected to the receiving unit; and the transparent plane radiating element and the transparent plane ground plane form a metal film structure including a plurality of metal wires provided at predetermined intervals. It is characterized by.

The transparent plane radiating element and the transparent plane ground plane of the first and second transparent antennas having the above-mentioned configuration form a metal film structure composed of a plurality of metal wires provided at predetermined intervals, and have a profile thereof. Is small, these two antennas can be mounted even when the antenna installation area is relatively small. In the wireless communication apparatus according to the present invention, the first and second transparent antennas are used as dedicated antennas for the reception unit and the transmission unit, respectively, so that the antenna required when one antenna is used as in the related art is used. A duplexer or a time division multiplex antenna switch can be omitted. As a result, not only can the antenna performance be improved, but also the manufacturing cost of the device can be reduced and the space in the device chassis can be reduced.

According to a twenty-fifth aspect of the present invention, a wireless communication apparatus
In order to solve the above problems, claims 13, 14, 15,
The wireless communication device according to any one of 16, 17, and 22, wherein each metal line of the metal film structure is formed corresponding to a non-display portion between pixels in the flat panel display unit. I have.

The non-display portion between pixels in the flat panel display portion is, for example, a space portion between pixel electrodes in a liquid crystal display, and is a portion where a black matrix or the like is formed.

According to the above construction, the above-mentioned claims 13 and 1
In addition to the effects of the invention according to 4, 15, 16, 17, or 22, each metal line of the metal film structure is formed in accordance with the pixel pitch of the flat panel display unit (that is, between the pixels in the flat panel display unit). By matching the non-display portion with the metal line which is the opaque portion of the metal film structure), the visibility of the flat panel display portion is improved.

[0063]

BEST MODE FOR CARRYING OUT THE INVENTION Like a wireless communication device of the present invention,
As an antenna suitable for a handy-type wireless communication device, it is preferable to use an antenna that is more robust and has less radio wave output in the direction of the user, which has a bad influence on the human body, instead of the whip-shaped antenna.

As the external antenna of the chassis, an antenna capable of providing a high gain with an omnidirectional radiation pattern is desirable.

It is desirable that the above-mentioned chassis-mounted external antenna is mounted on the side of the chassis on which a user-operable function is mounted, and is a flat display having one of the widest surface areas of the apparatus. It is further desirable to adopt a configuration mounted on a panel.

It is desirable that a plurality of antennas be mounted on one wireless communication device without using a dual antenna changeover switch.

Accordingly, a wireless communication device according to the present invention is a wireless communication device including a flat panel electric display and a first transparent antenna operating at a first frequency,
The first transparent antenna includes a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane, and the first transparent antenna is mounted so as to cover a surface of a display. The display is desirably configured to be visible through the first transparent antenna.

The wireless communication device may further include a first transparent thin film. Further, the transparent plane radiating element and the transparent plane ground plane of the first transparent antenna are formed on the same plane on the first transparent thin film,
The first transparent thin film is made of polyethylene terephthalate (PET), polyethylene sulfone (PES), polyetherimide (PEI), polycarbonate, polyimide, polytetrafluoroethylene, acrylic derivative,
Desirably, it is formed of a material selected from the group consisting of glass and a mixture thereof.

The transparent plane radiating element and the transparent plane ground plane of the present invention are formed on a first transparent thin film and have a metal film structure for insulating the transparent plane radiating element from the transparent plane ground plane. Is also good. This metal film structure
It may be a grid structure composed of a plurality of metal wires arranged in parallel with each other, or a plurality of metal wires arranged in parallel with each other, and arranged in parallel with each other so as to be orthogonal to the metal wires. It may have a network structure composed of a plurality of metal wires. Metal film structure is copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum,
It is desirable to be formed of a material selected from the group consisting of tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium and alloys of the above substances. When a conductor having a grid structure is used, it is preferable that the first transparent antenna be configured to have a transmittance of 65% or more in the wavelength region of visible light.

In the wireless communication apparatus according to the present invention, the second transparent antenna operating at the second frequency has a second transparent flat radiating element formed on the same plane as the first transparent flat radiating element. May be configured. That is, the first
And the second transparent plane radiating element may be formed on the same plane (common ground plane). Further, the second transparent antenna includes a second transparent planar radiating element formed on a second transparent thin film laminated on the first transparent thin film, and the first and second transparent planar radiating elements. May share the first transparent plane ground plane. In the above configuration, the second transparent antenna may be configured to operate at the same frequency as the first transparent antenna.

As another configuration of the present invention, the first
And a second transparent thin film laminated with the first transparent thin film and having the first transparent flat ground plane mounted thereon.

The transparent plane radiating element of the present invention has, for example, a rectangular or elliptical plane structure generally used in a patch antenna. In addition, instead of the transparent plane radiating element, a grid structure including a plurality of metal lines arranged in parallel with each other, or a plurality of metal lines arranged in parallel with each other and in parallel with each other so as to be orthogonal to the metal lines. It is also possible to use an interleaved transparent planar radiating element having a network structure composed of a plurality of arranged metal wires.

The wireless communication apparatus according to the present invention may be configured to have a plurality of receivers and transmitters connected to independently provided transparent antennas. Also, the antenna of the present invention is different from the conventional general configuration in which a plurality of radio units share one antenna, and is low in cost and has a small profile, so that it is possible to provide an antenna for each radio. Thus, in most conventional wireless devices, an antenna duplexer, which is necessary when one antenna is used without using a plurality of receivers, can be omitted.

FIGS. 1 to 1 show an embodiment of the present invention.
2 will be described below.

FIG. 1 is a perspective view showing a transparent planar antenna section of a wireless communication apparatus 30 according to the present embodiment. Wireless communication device 3
0 has a flat panel electric display 32 (flat panel display unit). As the flat panel electric display 32, a liquid crystal display (LCD) is preferably used. The wireless communication device 30 further operates at least at the first frequency,
And a first transparent antenna 34 (transparent antenna) including a first transparent planar antenna ground plane 38 having high conductivity. The first transparent antenna 34 is formed so as to cover the surface of the flat panel electric display 32, and allows the user to view the flat panel electric display 32 via the first transparent antenna 34. It is configured.

FIG. 2 is a perspective view showing the first transparent antenna 34 of FIG. 1 in more detail. As shown in FIG. 2, the wireless communication device 30 further includes a first transparent thin film 40. The first transparent antenna 34 includes the first transparent thin film 4.
A highly transparent first transparent planar radiating element 36 and a highly conductive first transparent planar antenna ground plane 38 stacked on the same plane and formed on the same plane are included. With this configuration,
The first transparent antenna 34 includes a single first transparent thin film 40.
Can be formed on. Instead of the above configuration, the highly transparent first transparent planar radiating element 36 and the highly conductive first
Is mounted under the lower surface of the first transparent thin film 40, and the first transparent flat radiating element 36, the first transparent flat antenna ground plane 38, and the flat panel electric display 32 are mounted on the first transparent thin film 40. May be configured to be covered with the transparent thin film 40.

The first transparent thin film 40 is made of polyethylene terephthalate (PET), polyethylene sulfone (PES), polyetherimide (PEI), polycarbonate, polyimide, polytetrafluoroethylene,
It is formed from a material selected from the group consisting of acrylic derivatives, glass, and mixtures thereof. The first transparent thin film 40 has a thickness t ₄₂ of 100 to 400 μm.
Is formed.

In the present embodiment, the highly transparent first transparent planar radiating element 36 and the highly conductive first transparent planar antenna ground plane 38 are formed of a metal film structure formed on the first transparent thin film 40. 44. First transparent thin film 4
0 is patterned so as to be electrically insulated from the first transparent plane radiating element 36 and the first transparent plane antenna ground plane 38. Thereby, the first transparent antenna 34 including a metal having high conductivity inside can be obtained. Generally, the metal film structure 44 includes a first
Is formed by laminating a metal film on the transparent thin film 40 of FIG. The metal film structure 44 is etched through various processes known in the field of integrated circuit (IC) formation, such as, for example, a process using a patterned photoresist profile such as an etching mask. Through these steps, the metal material is removed and a metal film structure 44 is formed,
The highly conductive first transparent planar radiating element 36 is electrically insulated from the highly conductive first transparent planar antenna ground plane 38. The metal film structure 44 includes, as shown in FIG.
A grid structure composed of a plurality of metal wires (conductive wires) arranged in parallel with each other may be used, or a plurality of metal wires (conductive wires) arranged in parallel with each other as shown in FIG.
And a plurality of metal wires (conductive wires) arranged in parallel with each other so as to be orthogonal to the metal wires.

The metal wires of the metal film structure 44 are made of copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, It is formed of a material selected from the group consisting of hafnium, indium and alloys of the above substances. FIG. 5 is a diagram showing details of the grid of FIG. Each metal line forming the grid structure of the metal film structure 44 of the present embodiment has a line width of 1 to 30 μm. In the configuration shown in FIG.
It has a line width of μm. Further, the gap (gap) between adjacent metal lines of the grid structure of the metal film structure 44 of the present embodiment is set to 30 μm to 1 mm. In the configuration shown in FIG. 5, the gap between adjacent metal wires is set to be 40 μm. The gap between the metal wires (conductive wires) is obtained based on the first frequency (resonance frequency) of the first transparent antenna 34. The gap may be set in consideration of a pitch or a space between electric elements formed on the bottom surface of the flat panel electric display 32 (liquid crystal display). That is, each metal line of the metal film structure is formed in accordance with the pixel pitch of the flat panel electric display 32 (that is, a non-display portion between pixels in the flat panel display portion and a metal line which is an opaque portion of the metal film structure). And the visibility of the flat panel display section is improved. The non-display portion between pixels in the flat panel electric display 32 is, for example, a space between pixel electrodes in a liquid crystal display, and is a portion where a black matrix or the like is formed.

Generally, the gap between adjacent metal lines is
It is set to one-tenth or less of the first effective wavelength. This effective wavelength is determined by the thickness t ₄₆ of the metal film structure 44, the dielectric constant (ε _r ) of the first transparent thin film 40 (see FIG. 2) and the thickness t.
Set based on ₄₂ . The metal film structure 44 of the present embodiment is formed of a metal material having excellent conductivity as described above, and is designed in a shape that can ensure excellent conductivity. Therefore, its thickness t ₄₆
, It is possible to maintain excellent conductivity. The thickness t ₄₆ of the metal film structure 44 is 300 to
It is set in the range of 100,000Å.

The line width of each metal line of the metal film structure 44 and the gap between adjacent metal lines are set so that optical transparency can be obtained. The minimum gap required to ensure this transparency is about 30 μm. This corresponds to the width of one pixel of the liquid crystal display. Further, the line width of each metal line can be reduced to about 1 μm. Generally, the width of each metal line and the gap between adjacent metal lines are configured so that the first transparent antenna 34 has a transmittance of 65% or more in the wavelength range of visible light.

When the metal film structure 44 has a mesh structure as shown in FIG. 4, the shape of the gap between the parallel and orthogonal lines changes from a square to a rectangle. The gap is set between 30 μm and 1 mm between the parallel lines in the first direction. Further, the gap between two adjacent parallel lines is formed so as to be different from the gap between two adjacent parallel lines orthogonal to each other. Therefore, a region surrounded by two pairs of parallel lines orthogonal to each other is a rectangle. In the present invention, the pattern of the metal wires is not particularly limited, but generally, it is preferable that the metal wires are regularly arranged because they are easily manufactured. The main feature of the present invention is that the metal film structure 44 has two contradictory characteristics of high conductivity and transparency.

The metal film structure 44 of the present embodiment is
It may be formed from a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide.
However, these materials do not have as high conductivity as the above-mentioned metals. Therefore, in order to obtain the same conductivity as the case of using the metal as described above, the thickness t ₄₆ of the metal film structure 44 shown in FIG. 2, compared with the case of using the metal as described above, it is necessary to increase. In this case, the thickness t ₄₆ of the metal film structure 44 is set in the range of 0.1 to 10 μm.

FIG. 6 shows a plurality of transparent antennas. The wireless communication device 30 further includes a second transparent antenna 5 operating at a second frequency different from the first frequency.
0 may be provided. The second transparent antenna 50 includes a second transparent planar radiating element 52 (transparent planar radiating element) formed on the same plane as the highly conductive first transparent planar radiating element 36 of the first transparent antenna 34. have. The first and second transparent planar radiating elements 36 and 52 of these first and second transparent antennas 34 and 50 are flush with the first transparent planar antenna ground plane 38 as a common ground plane of high conductivity. Is formed on. Further, the second transparent antenna 50 may be configured to operate at the same frequency as the frequency of the first transparent antenna 34. Also in this case, the second transparent antenna 50 has the second transparent planar radiating element 52 formed on the same plane as the first transparent planar radiating element 36, and the first and second transparent planar radiating elements 52 are provided. The elements 36 and 52 are formed on the same plane as the first transparent planar antenna ground plane 38 as a highly conductive shared antenna ground plane.

The wireless communication device 30 further includes at least a third transparent antenna 54 and a fourth transparent antenna 5.
6 may be provided with a plurality of transparent antennas. As is apparent from FIG.
Is adjusted so that a space for installing a plurality of antennas can be secured. For convenience of explanation, FIG. 6 shows only four antennas. The second to fourth transparent antennas 50, 54, 56 are respectively
It has second to fourth transparent plane radiating elements 52, 58, 60 formed on the same plane as the first transparent plane radiating element 36. These first to fourth transparent plane radiating elements 36, 52, 58, and 60 are formed on the same plane as the ground plane 38 of the highly transparent first transparent planar antenna.

FIG. 7 shows a plurality of transparent antennas which are not formed on the same plane. In this configuration, the wireless communication device 30 further includes a second transparent thin film 62 formed on the first transparent thin film 40. The wireless communication device 30 further has a second transparent antenna 50 operating at a second frequency different from the first frequency. The second transparent antenna 50 has a second transparent planar radiating element 52 formed on a second transparent thin film 62. First
And the second transparent planar radiating elements 36 and 52 share the highly transparent first transparent planar antenna ground plane 38. Further, the second transparent antenna 50 may be configured to operate at the same second frequency as the first frequency.

The radio communication device 30 of the present embodiment is further configured to include a plurality of transparent thin films laminated on the first transparent thin film 40 and a plurality of transparent antennas each having a radiating element. May be. In this configuration,
Each transparent plane radiating element is formed on a corresponding thin film, and the plurality of transparent plane radiating elements share the first transparent plane antenna ground plane 38 having high conductivity.

For the sake of convenience, in order to simplify and clarify the configuration, a third transparent antenna 54 having a third transparent thin film 70 and a third transparent planar radiating element 58 (transparent planar radiating element) is provided. 7 is shown in FIG. 7, but in the configuration of the present embodiment, another antenna can be provided on the third transparent antenna 54. In the figure, to show the structure of the second transparent antenna 50, the third transparent antenna 54 is shown in a partially cutaway sectional view.

FIG. 8 shows a transparent touch panel 74 used in the present invention. As shown in FIG. 8, the wireless communication device 3
0 further has a transparent touch panel 74 formed on the flat panel electric display 32 and operated by the user. Like the transparent touch panel 74, a transparent touch panel formed on a computer screen and an electric display is generally well known as a computer interface used without or with a keypad. The transparent touch panel 74 includes a sensor 75 that detects a user operation. The sensor 75 corresponds to a display prompt displayed on the flat panel electric display 32 via the first transparent antenna 34 and the transparent touch panel 74. As another configuration, the transparent touch panel 74 is a first touch panel.
Can be formed between the transparent antenna 34 and the flat panel electric display 32. Further, both the transparent touch panel 74 and the first transparent antenna 34 can be formed on the first transparent thin film 40. In this case, for example, the first transparent antenna 34 and the transparent touch panel 7
4 are formed on the first transparent thin film 40 such that the conductive portions are located on opposite sides of the first transparent thin film 40, respectively.

FIG. 9 shows a non-coplanar structure as another configuration of the present invention. The wireless communication device 30 is laminated with the fourth transparent thin film 76 having the first transparent planar radiating element 36 having high conductivity formed thereon and the first transparent thin film 40, and First transparent planar antenna ground plane 3
8 on which a fifth transparent thin film 78 is mounted. The first transparent antenna 34 is mounted on two stacked fourth and fifth transparent thin films 76 and 78.

FIG. 10 shows a transparent antenna according to the present invention.
It is a schematic diagram which shows the structure using a mutual arrangement type antenna.
The wireless communication device 30 shown in FIG. 1 may further include a second transparent antenna 50 operating at the second frequency shown in FIG. The second transparent planar radiating element 52 of the second transparent antenna 50 is formed on the same plane as the highly conductive first transparent planar radiating element 36. The highly conductive first and second transparent planar radiating elements 36 and 52 are configured to coexist in an interleaved metal film structure 44. The first transparent antenna 34 and the second transparent antenna 50 are formed on the same antenna ground plane (not shown,
(See FIG. 1). Alternatively, the antenna ground plane (not shown, see FIG. 9) may be formed differently from the plane on which the first and second transparent planar radiating elements 36 and 52 are formed. The space between the highly conductive first and second transparent planar radiating elements 36 and 52 reduces the frequency, effective wavelength, and parasitic effects between adjacent antennas of the first and second transparent antennas 34 and 50. It is set in consideration of.

FIG. 10 is not shown to scale. The comb electrodes (digits) shown on the entire panel are only intended to show the alternating electrodes of the first transparent antenna 34 and the second transparent antenna 50. Actually, the metal lines and the grid lines of the grid structure and the net structure are set to have a width and a gap of several μm, so that they are not usually visible. As described above with reference to FIGS. 3 to 5, the interposed metal film structure 44 forms a grid structure including a plurality of metal wires (conductive wires) arranged in parallel with each other. Or a plurality of metal wires (conductive wires) arranged in parallel with each other and a plurality of metal wires (conductive wires) arranged in parallel with each other so as to be orthogonal to the metal wires
And a network structure consisting of In the plurality of metal wires, the width of each metal wire is set in a range of 1 to 30 μm, and the gap between adjacent metal wires arranged in parallel is set in a range of 30 μm to 1 mm. As shown in FIG. 10, a comb-shaped electrode of another antenna is formed in a space between the comb-shaped electrodes of one antenna having a grid structure or a mesh structure. In FIG. 10, a second transparent planar radiating element 52 having a mesh structure is shown in a portion A, and first and second transparent planar radiating elements 36 and 52 having high conductivity as radiating elements having a grid structure. Is shown in part B.

FIG. 11 shows a non-conductive metal film structure 80 (dummy portion) forming a grid and a net structure used for the transparent antenna 34 of the present invention. This non-conductive metal film structure 80 is formed on the first transparent thin film 40 and is patterned into an insulating portion. The non-conductive metal film structure 80 may have a grid structure composed of a plurality of non-conductive metal lines arranged in parallel with each other, or may have a plurality of non-conductive It may have a net structure composed of a metal wire and a plurality of non-conductive metal wires arranged parallel to each other so as to be orthogonal to the metal wire. In FIG. 11, the non-conductive grid structure indicated by A and the non-conductive network structure indicated by B are the same as those shown in FIGS.
It is similar to the conductive grid and mesh structure shown in FIG. However, unlike the above-described structure, a cut is formed between the patterns of the grid structure and the net structure shown in FIG. 11, and the grid and the net are configured so as not to be electrically conducted. I have. Generally, the non-conductive metal film structure 80 having a grid structure or a mesh structure is used for the same antenna as the conductive grid structure and the metal film structure 44 having a mesh structure so as to obtain uniformity of transparency. . This means that the transparency of the non-conductive portion surrounding the first transparent planar radiating element 36 having high conductivity and the first transparent planar antenna ground plane 38 having high conductivity is increased by the first transparent planar radiating element 36 having high conductivity and This is to make the transparency of the first transparent flat antenna ground plane 38 of high conductivity equal to the transparency.

FIG. 12 is a block diagram showing a schematic configuration of a radio communication device 30 capable of communicating in a plurality of frequency bands. The wireless communication device 30 includes at least a first receiving unit 90 (receiving unit). As shown in FIG. 12, the first receiving section 90 of the first transparent antenna 34 is operably connected to the wiring 9.
2 and has an input unit for receiving information at a first frequency. The wireless communication device 30 further includes at least a second receiving unit 94. The second receiving section 94 is operably connected to the wiring 96 and has an input section for receiving information at a second frequency different from the first frequency. As mentioned above, FIG.
5 and 8 to 11, the wireless communication device 30
Includes a first transparent antenna 34 having a highly conductive first transparent planar radiating element 36 and a highly conductive first transparent planar antenna ground plane 38. Further, as shown in FIG. 12, the first transparent antenna 34 is operatively connected to the first receiving unit 90, but is not connected to the second receiving unit 94.

As described above, and as shown in FIGS. 6 and 7, the radio communication device 30 is connected to the second transparent antenna 5.
Contains 0. The second transparent antenna 50 includes a highly conductive second transparent planar radiating element 52 and a highly conductive first transparent planar antenna ground plane 38. As shown in FIG. 6, a highly conductive first transparent planar antenna ground plane 38 is provided.
Are formed on the same plane as the highly conductive second transparent plane radiating element 52.

As shown in FIG. 7, the first transparent planar antenna ground plane 38 having high conductivity is formed on a plane different from the second transparent plane radiating element 52 having high conductivity. Good. As shown in FIG. 12, the second transparent antenna 50 is operatively connected to the second receiving unit 94, but is not connected to the first receiving unit 90.

First and second transparent planar radiating elements 36.5
2 and highly conductive first transparent planar antenna ground plane 38
Has a metal film structure 44. The metal film structure 44 includes a plurality of metal wires (conductive wires) arranged in parallel with each other as described above and as shown in FIGS.
Or a plurality of metal wires (conductive wires) arranged in parallel with each other and a plurality of metal wires (conductive wires) arranged in parallel with each other so as to be orthogonal to the metal wires. ) May be used. As described above, by using two antennas, it is possible to omit an antenna duplexer which is necessary when using one antenna without using a plurality of receivers in most conventional wireless devices.

Also, instead of the second receiving unit 94, the first
Transmitter 98 operating at a second frequency different from the frequency of
Can also be used. Further, the second frequency may be the same frequency as the first frequency. The wireless communication device 30 includes two separately provided transparent antennas, that is, a first transparent antenna 34 operably connected to the first receiving unit 90 and a second transparent antenna operably connected to the transmitting unit 98. And a transparent antenna 50. As described above, by using two antennas, an antenna duplexer can be omitted. Since the transparent antenna of the present invention is inexpensive and has little deformation, the wireless communication device 30 can use the antenna operating in each frequency range without using an antenna duplexer or an antenna switch. The present invention is also applicable to a configuration using independent transparent antennas for a plurality of receivers and transmitters.

In general, as is well known in the art, the first and second transparent antennas 34 and 50, the first and second receivers 90 and 94, and the transmission The unit 98 is connected. In addition, these devices need to be connected to conductive lines having precisely set impedances. The conductive lines connected to the first and second transparent planar radiating elements 36 and 52 are transparent when formed on a thin film and assembled with a conductive grid or mesh metal film structure 44. In the configuration of the present invention, even when the amplifier, the filter, and other circuits are not transparent, these members can be formed on the first transparent thin film 40. This opaque structure is adapted to a configuration in which the user does not need to see the flat panel electronic display 32 formed thereunder.

As described above, the present invention makes it possible to use a flat panel LCD, which is one of the wireless devices having the largest surface area, not only for display purposes but also as an antenna installation surface. I do. That is,
The antenna of the present invention has the same characteristics as a conventional wedge-shaped antenna by forming the antenna on a transparent thin film using a conductive thin wire, and allows a user to visually check a display surface via the antenna. It is configured to be able to.

Since the transparent antenna of the present invention has a small profile, the transparent antenna is provided with an addition network for adding the directional gains of a plurality of transparent antennas to provide a transparent panel antenna system capable of providing an omnidirectional antenna gain pattern. The effect is that the design can be made relatively easily. In addition, the transparent antenna of the present invention has a radio wave output range when used alone which is basically hemispherical and does not output in all directions. By installing the transparent antenna in a wireless communication device, it is possible to provide a wireless communication device capable of minimizing the effect on the human body.

The first transparent antenna according to the present invention has the first
And a first transparent planar radiating element operating at a first frequency and formed on said first transparent thin film,
This is a configuration in which a structure located below the first transparent thin film can be visually observed.

A second transparent antenna according to the present invention has a configuration in which the first transparent antenna further includes a first transparent flat ground plane.

The third transparent antenna according to the present invention, in the configuration of the second transparent antenna, wherein the first transparent flat ground plane is formed on the first transparent thin film, whereby the first transparent antenna is formed. And the first transparent plane ground plane is formed on the same plane.

A fourth transparent antenna according to the present invention is the same as the first transparent antenna, except that the first transparent thin film has a thickness in the range of 100 to 400 μm.

A fifth transparent antenna according to the present invention is the same as the second transparent antenna, except that the first transparent antenna further comprises the first transparent antenna.
And a second transparent thin film laminated with the first transparent thin film, wherein the first transparent plane ground plane is formed on the second transparent thin film.

According to a sixth transparent antenna of the present invention, in the configuration of the second transparent antenna, the first transparent plane radiating element and the first transparent plane ground plane are arranged in parallel with each other. A highly conductive metal forming a grid structure composed of metal wires or a network structure composed of a plurality of metal wires arranged in parallel with each other and a plurality of metal wires arranged in parallel with each other so as to be orthogonal to the metal wires. This is a configuration having a film structure.

A seventh transparent antenna according to the present invention, in the sixth transparent antenna, wherein the metal film structure is made of copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, The structure is made of a material selected from the group consisting of magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium and alloys of the above substances.

An eighth transparent antenna according to the present invention, in the configuration of the sixth transparent antenna, wherein the width of each metal wire is in a range of 1 to 30 μm, and the gap between the metal wires is 3 μm.
The configuration is in the range of 0 μm to 1 mm.

A ninth transparent antenna according to the present invention is the same as the above-described seventh transparent antenna, except that the thickness of the metal film of the metal film structure is 300 to 100,000 °.

The tenth transparent antenna according to the present invention, in the configuration of the sixth transparent antenna, wherein the metal film structure is formed of a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide. 1 to 10
This is a configuration formed to a thickness of μm.

[0112] An eleventh transparent antenna according to the present invention is the above-mentioned second transparent antenna, wherein the first transparent planar antenna has a transmittance of 65% or more in a visible light wavelength region. .

A twelfth transparent antenna according to the present invention, in the configuration of the third transparent antenna, further comprises a second transparent planar radiating element formed on the same plane as the first transparent planar radiating element. Accordingly, the first transparent plane radiating element and the second transparent plane radiating element are formed on the same plane on the first transparent plane ground plane.

A thirteenth transparent antenna according to the present invention, in the above-mentioned third transparent antenna, further comprises a plurality of transparent plane radiating elements, said first transparent plane radiating element and said first transparent plane ground plane. This is a configuration formed on the same plane.

A first wireless communication device according to the present invention includes a flat panel electric display and a first transparent flat antenna operating at a first frequency, wherein the first transparent flat antenna has a high conductivity. A first transparent planar radiating element and a highly conductive first transparent planar ground plane, said first transparent planar antenna passing through said first transparent planar antenna,
The flat panel electric display is formed on the flat panel electric display so that the display can be viewed.

A second wireless communication device according to the present invention, in the configuration of the first wireless communication device, further includes a first transparent thin film, and further includes a first transparent flat antenna, and the first transparent planar antenna has a high conductivity. The first transparent plane radiating element and the highly conductive first transparent plane ground plane are formed on the same plane on the first transparent thin film, so that the first transparent plane antenna is formed of one sheet. This is a configuration provided on the first transparent thin film.

In a third wireless communication device according to the present invention, in the configuration of the second wireless communication device, the first transparent thin film is made of polyethylene terephthalate (PET), polyethylene sulfone (PES), polyetherimide. (P
EI), polycarbonate, polyimide, polytetrafluoroethylene, acrylic derivative, glass, and a mixture thereof.

A fourth wireless communication device according to the present invention has a configuration in which, in the configuration of the second wireless communication device, the first transparent thin film is formed to have a thickness in the range of 100 to 400 μm. .

A fifth wireless communication apparatus according to the present invention, in the configuration of said second wireless communication apparatus, is characterized in that said highly conductive first transparent plane radiating element and said highly conductive first transparent plane ground plane are provided. Has a metal film structure formed on a first transparent thin film and electrically insulating the first transparent plane radiating element from the first transparent plane ground plane, wherein the metal of the metal film structure has high conductivity. This is a configuration having characteristics.

A sixth wireless communication apparatus according to the present invention, in the configuration of the fifth wireless communication apparatus, wherein the metal film structure is a grid structure composed of a plurality of metal wires arranged in parallel with each other or a parallel structure with each other. And a plurality of metal wires arranged in parallel with each other so as to be orthogonal to the metal wire.

A seventh wireless communication device according to the present invention is the fifth wireless communication device, wherein the metal film structure is made of copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, The structure is made of a material selected from the group consisting of tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium and alloys of the above substances.

An eighth wireless communication apparatus according to the present invention, in the configuration of the sixth wireless communication apparatus, wherein the width of each of the metal wires is in the range of 1 to 30 μm, and the distance between the metal wires arranged in parallel is Is configured to be in the range of 30 μm to 1 mm.

A ninth wireless communication apparatus according to the present invention has a structure in which the thickness of the metal film of the metal film structure is 300 to 100,000 mm in the structure of the fifth wireless communication apparatus.

A tenth wireless communication device according to the present invention, in the structure of the sixth wireless communication device, further comprises a non-conductive metal film structure as an insulating member formed on the first transparent thin film. Having a non-conductive metal film structure, a grid structure composed of a plurality of non-conductive metal lines arranged in parallel with each other, or a plurality of non-conductive metal lines arranged in parallel with each other, This is a configuration that forms a net structure including a plurality of non-conductive metal wires arranged in parallel with each other so as to be orthogonal to the non-conductive metal wire.

An eleventh wireless communication device according to the present invention, in the configuration of the fifth wireless communication device, wherein the metal film structure is made of a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide. 0.1-10
This is a configuration formed to a thickness of μm.

A twelfth radio communication apparatus according to the present invention, in the above first radio communication apparatus, wherein the first transparent planar antenna has a transmittance of 65% or more in a visible light wavelength region. It is.

[0127] A thirteenth wireless communication apparatus according to the present invention is configured such that, in the configuration of the first wireless communication apparatus, the electric display is a liquid crystal display.

A fourteenth wireless communication apparatus according to the present invention, in the configuration of said second wireless communication apparatus, further comprises a second transparent planar antenna operating at a second frequency different from said first frequency. The second transparent planar antenna includes a second transparent planar radiating element formed on the same plane as the first transparent planar radiating element, and the first transparent planar radiating element and the second transparent planar radiating element. The plane radiating element has a configuration formed on the same plane as the first transparent plane ground plane shared by these elements.

A fifteenth wireless communication apparatus according to the present invention, in the configuration of the second wireless communication apparatus, further includes a second transparent planar antenna operating at the same second frequency as the first frequency. The second transparent planar antenna includes a second transparent planar radiating element formed on the same plane as the first transparent planar radiating element, and includes the first transparent planar radiating element and the second transparent planar radiating element. The radiating element is configured to be formed on the same plane as the first transparent plane ground plane shared by these elements.

A sixteenth wireless communication apparatus according to the present invention, in the configuration of said first wireless communication apparatus, comprises: a second transparent thin film formed on said first transparent thin film; Comprises a second transparent planar antenna operating at a different second frequency, wherein the second transparent planar antenna comprises a second transparent planar antenna.
A second transparent plane radiating element formed on the transparent thin film of the above, wherein the first transparent plane radiating element and the second transparent plane radiating element share the first transparent plane ground plane. .

A seventeenth wireless communication apparatus according to the present invention, in the configuration of said first wireless communication apparatus, comprises: a second transparent thin film formed on said first transparent thin film; A second transparent planar antenna operating at the same second frequency, wherein said second transparent planar antenna includes a second transparent planar radiating element formed on a second transparent thin film;
The first transparent plane radiating element and the second transparent plane radiating element are configured to share the first transparent plane ground plane.

An eighteenth wireless communication apparatus according to the present invention, in the configuration of the first wireless communication apparatus, further includes a plurality of transparent planar antennas, and each transparent planar radiating element of the plurality of transparent planar antennas The plurality of transparent planar antennas are formed on the same plane as the first transparent planar radiating element, and each transparent planar radiating element of the plurality of transparent planar antennas is formed on the same plane as the first transparent planar ground plane. .

A nineteenth wireless communication device according to the present invention, in the structure of the first wireless communication device, further includes a plurality of transparent thin films, and the plurality of transparent thin films are provided in a stacked state. A plurality of transparent planar antennas, each of the plurality of transparent planar antennas having a transparent planar radiating element, sharing the first transparent planar ground plane, and each of the transparent planar radiating elements of the plurality of transparent planar antennas; Is a configuration formed on a plurality of corresponding transparent thin films.

A twentieth wireless communication apparatus according to the present invention, in the structure of the second wireless communication apparatus, further includes a user-activated transparent touch panel formed on the flat panel electric display. The transparent touch panel is configured to include a transparent planar antenna and a user-activated sensor corresponding to a display prompt displayed on the flat panel electric display, which is visible through the transparent touch panel.

In a twenty-first wireless communication apparatus according to the present invention, in the configuration of the twentieth wireless communication apparatus, both the transparent touch panel and the first transparent planar antenna are formed on a first transparent thin film. Configuration.

A twenty-second wireless communication apparatus according to the present invention is the same as the first wireless communication apparatus, further comprising: a first transparent thin film having a first transparent radiating element mounted on an upper surface thereof; A second transparent thin film formed below the transparent thin film, and having a first transparent planar ground plane mounted on its upper surface.
Thereby, the first transparent planar antenna is formed on the two stacked first and second transparent thin films.

A twenty-third wireless communication apparatus according to the present invention, in the configuration of the first wireless communication apparatus, further operates at the second frequency and is on the same plane as the first transparent plane radiating element. A second transparent planar radiating element having a second transparent planar radiating element formed therein, wherein the first and second transparent planar radiating elements coexist in an inter-digital metal film structure. The metal film structure of the mutual arrangement type is a grid structure composed of a plurality of metal lines arranged in parallel with each other, or a plurality of metal lines arranged in parallel with each other, so as to be orthogonal to the metal lines. It forms a net structure composed of a plurality of metal wires arranged in parallel with each other, the width of each metal wire is in the range of 1 to 30 μm, and the gap between the metal wires arranged in parallel is 30 μm to 1 mm. The configuration is a range.

A twenty-fourth wireless communication apparatus according to the present invention is a wireless communication apparatus for communicating information in a plurality of frequency bands, and has a first unit provided with an input unit for receiving information at a first frequency.
, A second receiving unit having an input unit for receiving information at a second frequency different from the first frequency, a highly conductive planar radiating element and a highly conductive transparent plane ground plane A first transparent planar antenna operatively connected to the first receiving unit but not connected to the second receiving unit; a highly conductive transparent planar radiating element; A second transparent planar antenna that is operably connected to the second receiving unit, but is not connected to the first receiving unit. And the transparent plane ground plane is a grid structure composed of a plurality of metal wires arranged in parallel to each other, or a plurality of metal wires arranged in parallel to each other, and a plurality of Metal film structure that forms a net structure consisting of multiple metal wires Has, by using two transparent planar antennas described above, a configuration in which it is possible to omit the antenna duplexer.

[0139] A twenty-fifth radio communication apparatus according to the present invention is a radio communication apparatus for performing information communication in a plurality of frequency bands, comprising: a receiving section having an input section for receiving information at a first frequency; A transmitting section having an output section for transmitting information at a second frequency different from the first frequency, a highly conductive transparent plane radiating element, and a highly conductive transparent plane ground plane; A first transparent planar antenna operatively connected to the transmitter, but not connected to the transmitter, including a highly conductive transparent planar radiating element and a highly conductive transparent planar ground plane; A second transparent planar antenna operatively connected to the transmitting unit but not connected to the receiving unit, wherein the transparent planar radiating element and the transparent planar ground plane are:
A grid structure composed of a plurality of metal wires arranged in parallel with each other, or a mesh composed of a plurality of metal wires arranged in parallel with each other and a plurality of metal wires arranged in parallel with each other so as to be orthogonal to the metal wires; The structure has a metal film structure, and the antenna duplexer can be omitted by using the above two transparent planar antennas.

The specific embodiments or examples described in the detailed description of the invention are intended to clarify the technical contents of the present invention, and are limited to such specific examples only in a narrow sense. Should not be interpreted as
Various modifications can be made within the spirit of the invention and the scope of the appended claims.

[0141]

As described above, the transparent antenna according to the first aspect of the present invention has a configuration including a transparent thin film and a transparent planar radiating element which operates at a predetermined frequency and is formed on the transparent thin film. is there.

According to the above arrangement, when the transparent antenna of the present invention is provided in a wireless device, the display portion, which is one of the wireless devices having the largest surface area, can be used as the antenna installation surface. The degree of freedom increases. Further, since the transparent antenna of the present invention has a hemispherical radio wave output range when used alone and is not omnidirectional output, the transparent antenna is designed to minimize the radio wave output in the direction where the user is in use by the user. The effect that the influence on the human body can be minimized is provided by installing the.

The transparent antenna according to the second aspect of the present invention comprises:
As described above, in the transparent antenna according to claim 1,
Further, the configuration includes a transparent plane ground plane.

According to the above configuration, in addition to the effect of the first aspect of the present invention, an effect that a high-performance planar transparent antenna can be obtained can be obtained.

[0145] The transparent antenna according to the third aspect of the present invention comprises:
As described above, in the transparent antenna according to claim 2,
The transparent plane ground plane is formed on the transparent thin film, so that the transparent plane radiating element and the transparent plane ground plane are formed on the same plane.

According to the above configuration, in addition to the effect of the second aspect of the present invention, an effect that a transparent antenna having a small thickness and high transparency can be obtained can be obtained.

A transparent antenna according to a fourth aspect of the present invention comprises:
As described above, in the transparent antenna according to claim 2,
Further, the semiconductor device includes a second transparent thin film laminated on the transparent thin film, wherein the transparent plane ground plane is formed on the second transparent thin film.

According to the above configuration, in addition to the effect of the second aspect of the present invention, since the transparent plane radiating element and the transparent plane ground plane are formed on separate transparent thin films to form a laminated structure, the antenna Even when the installation area is relatively small, a high gain transparent antenna can be obtained.

A transparent antenna according to a fifth aspect of the present invention
As described above, in the transparent antenna according to claim 1,
The transparent plane radiating element is configured to form a metal film structure including a plurality of metal wires provided at predetermined intervals.

According to the above configuration, a transparent and highly conductive radiating element can be obtained. Thereby, the above claim 1
In addition to the effects of the invention according to the above, there is an effect that a flat transparent antenna having the same characteristics as the conventional wedge-shaped antenna and mountable on the display unit can be obtained.

The transparent antenna according to the sixth aspect of the present invention comprises:
As described above, in the transparent antenna according to claim 5,
The metal film structure may be a grid structure including a plurality of metal wires arranged in parallel with each other, or a plurality of metal wires arranged in parallel with each other and a plurality of metals arranged in parallel with each other so as to be orthogonal to the metal wires. This is a configuration that is a network structure composed of lines.

According to the above construction, in addition to the effect of the fifth aspect of the invention, in addition to the effect that a uniform metal film structure with less variation in conductivity can be easily obtained relatively easily. Play.

A transparent antenna according to a seventh aspect of the present invention comprises:
As described above, in the transparent antenna according to claim 5 or 6, the metal wire having the metal film structure is made of copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, magnesium, cobalt, or platinum. , Tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium, and an alloy of the above substances.

According to the above configuration, in addition to the effect of the invention according to the fifth or sixth aspect, a metal film having a metal film structure is formed by each of the highly conductive metal materials or their alloys. So that the film thickness is thin (that is, high in transparency)
In addition, the transparent antenna having a high antenna gain can be obtained.

The transparent antenna according to the eighth aspect of the present invention comprises:
As described above, in the transparent antenna according to any one of claims 5 to 7, the width of each of the metal wires is 1 to 30 μm.
m, and the gap between the metal wires is 30 μm to 1 mm.
In the range of

According to the above configuration, in addition to the effects of the invention according to the fifth, sixth, or seventh aspect, in addition to having sufficient transparency for visually observing the structure below, and having a high antenna gain. The effect that a transparent antenna can be obtained is also exhibited.

A transparent antenna according to a ninth aspect of the present invention is
As described above, in the transparent antenna according to claim 5 or 6, the metal wire forming the metal film structure is formed of a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide. The film is configured to have a thickness of 0.1 to 10 μm.

According to the above configuration, in addition to the effects of the fifth or sixth aspect of the present invention, a transparent antenna having sufficient transparency for observing the structure below and having a high antenna gain is provided. It also has the effect that it can be obtained.

The transparent antenna of the present invention has higher transparency and higher conductivity than the conventional transparent conductive indium tin oxide disclosed in Woo et al. US Pat. No. 5,627,548. (That is, a high antenna gain).

As described above, the transparent antenna according to the tenth aspect of the present invention is the transparent antenna according to the third aspect, wherein a plurality of the transparent planar radiating elements are provided, and a plurality of the transparent planar radiating elements are connected to the transparent planar radiating element. This is a configuration formed on the same plane as the ground.

According to the above configuration, in addition to the effect of the third aspect of the present invention, even when a plurality of transparent plane radiating elements are provided (that is, a plurality of antenna units are provided), a thin film having a low degree of transparency is obtained. The effect that a high transparent antenna can be obtained is also exhibited.

As described above, the wireless communication apparatus according to the eleventh aspect of the present invention includes the flat panel display unit and the transparent antenna provided on the flat panel display unit and operating at a predetermined frequency. The transparent antenna is configured to include a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane.

According to the above arrangement, by providing the flat panel display, which is one of the wireless communication devices having the largest surface area, as the antenna installation surface, a sufficient antenna installation space can be secured outside the device. This eliminates the need for an antenna installation space inside the device. Also, since the transparent antenna has a hemispherical output range when used alone and is not an omnidirectional output, the transparent antenna is displayed so that the radio output in the direction in which the user is located at the time of user use is minimized. If formed on the part, the effect that the influence on the human body can be minimized can be achieved.

As described above, the wireless communication apparatus according to the twelfth aspect of the present invention is the wireless communication apparatus according to the eleventh aspect, further including a transparent thin film, wherein the transparent plane radiating element and the transparent plane of the transparent antenna are provided. The ground plane is formed on the transparent thin film.

According to the above configuration, in addition to the effect of the invention of claim 11, since the transparent plane radiating element and the transparent plane ground plane are formed on one transparent thin film, the film thickness is small. A transparent antenna having high transparency can be obtained, and the effect of improving the visibility of the flat panel display portion can be obtained.

According to a thirteenth aspect of the present invention, in the wireless communication apparatus according to the eleventh or twelfth aspect, the transparent plane radiating element and the transparent plane ground plane are spaced apart from each other by a predetermined distance. And a metal film structure composed of a plurality of metal wires provided.

According to the above configuration, in addition to the effects of the invention according to the eleventh or twelfth aspect, a highly conductive transparent plane radiating element and transparent plane ground plane can be obtained. As a result, there is an effect that it is possible to obtain a high-performance wireless communication device equipped with a planar transparent antenna having the same characteristics as the conventional whip antenna.

According to a fourteenth aspect of the present invention, as described above, in the wireless communication device according to the thirteenth aspect, the metal film structure includes a grid made of a plurality of metal wires arranged in parallel with each other. This is a structure or a structure that forms a net structure composed of a plurality of metal wires arranged in parallel with each other and a plurality of metal wires arranged in parallel with each other so as to be orthogonal to the metal wires.

According to the above configuration, in addition to the effect of the invention according to the eleventh aspect, in addition to the effect that a uniform metal film structure with less variation in conductivity can be easily obtained relatively easily. Play.

According to a fifteenth aspect of the present invention, in the wireless communication apparatus according to the thirteenth or fourteenth aspect, the metal wire having the metal film structure is
From the group consisting of copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium and alloys of the above substances This is a configuration formed of a selected material.

According to the above configuration, in addition to the effect of the invention according to the thirteenth or fourteenth aspect, a metal wire having a metal film structure is formed by each of the highly conductive metal substances or their alloys. Therefore, a wireless communication device equipped with a transparent antenna having a small thickness (that is, high transparency) and a high antenna gain can be obtained.

As described above, the wireless communication device according to the sixteenth aspect of the present invention is the wireless communication device according to any one of the thirteenth to fifteenth aspects, wherein the line width of each metal wire is
1 to 30 μm, and the gap between the metal wires is 30 μm.
The configuration is in the range of m to 1 mm.

According to the above arrangement, the above-mentioned claims 13 and 1 are provided.
In addition to the effects of the invention according to 4 or 15, it is possible to obtain a wireless communication device equipped with a transparent antenna having sufficient transparency for visually observing the display state of the flat panel display unit and having a high antenna gain. It also has the effect of being able to do so.

As described above, in the wireless communication device according to the seventeenth aspect of the present invention, in the wireless communication device according to the thirteenth or fourteenth aspect, the metal wire forming the metal film structure is formed of indium tin, indium tin oxide, And a material selected from the group consisting of tin oxide and tin oxide, and the film is configured to have a thickness of 0.1 to 10 μm.

According to the above arrangement, in addition to the effects of the thirteenth or fourteenth aspect, in addition to having sufficient transparency for visually observing the display state of the flat panel display unit, and having a high antenna gain. The present invention also has an effect that a wireless communication device equipped with the transparent antenna can be obtained.
The transparent antenna mounted on the wireless communication device of the present invention is a Wooet
al. Higher transparency and higher conductivity (that is, higher antenna gain) than the conventional antenna using a conductive film made of transparent indium tin oxide disclosed in US Pat. No. 5,627,548 and the like.
Antenna.

As described above, the wireless communication device according to the eighteenth aspect of the present invention is the wireless communication device according to the thirteenth or fourteenth aspect, further comprising a non-conductive film having substantially the same transparency as the metal film structure. A dummy portion having a structure, wherein the dummy portion has a group of metal lines similar to the plurality of metal lines of the metal film structure, and each line of the group of metal lines is partially cut to form a non-conductive film. This is the configuration that makes up the structure.

According to the above construction, claim 13 or 1
In addition to the effect of the invention according to 4, the uniformity of the transparency of the entire transparent antenna is improved and the visibility of the display state of the flat panel display unit is improved.

A wireless communication apparatus according to a nineteenth aspect of the present invention is the wireless communication apparatus according to any one of the eleventh to eighteenth aspects, wherein the plurality of transparent antennas are provided. Has a transparent plane radiating element provided for each transparent antenna and a transparent plane ground plane commonly used for a plurality of transparent antennas, and each transparent plane radiating element of the plurality of transparent antennas has a plurality of transparent antennas. This is a configuration that is formed on the same plane as a transparent plane ground plane commonly used in the present invention.

According to the above configuration, in addition to the effects of the inventions according to the above-described claims 11 to 18, even when a plurality of transparent antennas are provided, a transparent antenna group having a small thickness and high transparency is obtained. This has the effect of improving the visibility of the flat panel display unit.

A wireless communication device according to a twentieth aspect of the present invention is the wireless communication device according to the eleventh aspect, wherein a plurality of the transparent thin films are provided, and the plurality of transparent thin films are provided in a stacked manner. Along with the plurality of transparent antennas, the plurality of transparent antennas, having a transparent plane radiating element provided for each transparent antenna, and a transparent plane ground plane commonly used for a plurality of transparent antennas, Each transparent planar radiating element of the plurality of transparent antennas is formed on a corresponding plurality of transparent thin films.

According to the above configuration, in addition to the effect of the invention according to claim 11, in the configuration having a plurality of transparent antennas, each transparent planar radiating element of the plurality of transparent antennas is formed on a separate transparent thin film. Because it has a laminated structure,
Even when the flat panel display unit (that is, the antenna installation surface) is relatively small, a high-gain transparent antenna group can be obtained.

As described above, the wireless communication device according to claim 21 of the present invention is the wireless communication device according to claim 11, further comprising the first transparent flat-surface radiating element mounted on the surface thereof. A thin film is laminated with the first transparent thin film, and includes a second transparent thin film on which the transparent plane ground plane is mounted.

According to the above configuration, since the transparent plane radiating element and the transparent plane ground plane are formed on separate transparent thin films to form a laminated structure, the flat panel display unit (ie, the antenna installation surface) is relatively small. Even in such a case, a high gain transparent antenna can be obtained.

As described above, the wireless communication device according to claim 22 of the present invention is the wireless communication device according to claim 11, further comprising a second transparent element formed on the same plane as the transparent plane radiating element. A second transparent antenna having a planar radiating element, wherein the two transparent planar radiating elements coexist in an interleaved metal film structure, wherein the metal film structure is provided at a predetermined interval; And a plurality of metal wires.

According to the above configuration, when two transparent antennas are provided, the transparent plane radiating elements of each transparent antenna coexist in a single metal film structure as mutual arrangement, so that the film thickness is small. In addition, it is possible to obtain a wireless communication device equipped with two transparent antennas (that is, having high transparency) and high gain.

A wireless communication apparatus according to a twenty-third aspect of the present invention is a wireless communication apparatus for communicating information in a plurality of frequency bands as described above, and includes an input unit for receiving information at a first frequency. A first receiving unit, a second receiving unit including an input unit for receiving information at a second frequency different from the first frequency, a highly conductive transparent planar radiating element, and a highly conductive A first transparent antenna operatively connected to the first receiver, but not connected to the second receiver, and a highly conductive transparent plane radiating element And a second transparent antenna operatively connected to the second receiver, but not connected to the first receiver, and a transparent flat ground plane having high conductivity. The plane radiating element and the transparent plane ground plane are provided at predetermined intervals. It is configured to form a metal film structure composed of the number of metal wires.

According to the above configuration, since the first and second transparent antennas are used as dedicated antennas for the first and second receiving units, respectively, it is necessary to use one antenna as in the conventional case. A simple antenna duplexer or a time division multiplex antenna switch can be omitted. As a result, it is possible to not only improve the antenna performance, but also to reduce the manufacturing cost of the device and save the space in the device chassis.

A wireless communication apparatus according to a twenty-fourth aspect of the present invention is a wireless communication apparatus that performs information communication in a plurality of frequency bands, and includes an input unit that receives information at a first frequency. A transmitting unit having an input unit for receiving information at a second frequency different from the first frequency, a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane. A first transparent antenna operatively connected to the receiving unit, but not connected to the transmitting unit, including a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane, A second transparent antenna that is operably connected to the transmission unit and is not connected to the reception unit, wherein the transparent plane radiating element and the transparent plane ground plane are provided at predetermined intervals. Metal film structure consisting of multiple metal wires It is an eggplant configuration.

According to the above configuration, the first and second transparent antennas are used as dedicated antennas for the receiving unit and the transmitting unit, respectively, so that the antenna sharing required when one antenna is used as in the related art is used. The device or the time division multiplex antenna switch can be omitted. As a result, it is possible to not only improve the antenna performance, but also to reduce the manufacturing cost of the device and save the space in the device chassis.

As described above, the wireless communication apparatus according to the twenty-fifth aspect of the present invention has the following features.
23. The wireless communication device according to any one of 7 and 22, wherein each metal line of the metal film structure is formed corresponding to a non-display portion between pixels in the flat panel display unit.

According to the above arrangement, each metal line of the metal film structure is formed in accordance with the pixel pitch of the flat panel display section (that is, the non-display portion between pixels in the flat panel display section and the metal film). By matching the opaque portion of the structure with the metal wire), the visibility of the flat panel display section is improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a planar transparent antenna of a wireless communication device according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating details of a transparent antenna shown in FIG.

FIG. 3 is a plan view showing a schematic plan structure of a transparent antenna having a grid-like metal film structure.

FIG. 4 is a plan view showing a schematic plan structure of a transparent antenna having a net-like metal film structure.

FIG. 5 is an enlarged plan view showing details of a grid shown in FIG. 3;

FIG. 6 is a schematic plan view showing a plurality of transparent antennas formed on the same plane.

FIG. 7 is a schematic partial cross-sectional perspective view showing a plurality of transparent antennas formed on different planes.

FIG. 8 is a schematic perspective view showing a planar transparent antenna of a wireless communication device provided with a transparent touch panel.

FIG. 9 is a schematic perspective view showing a planar transparent antenna having a laminated structure.

FIG. 10 is a schematic plan view schematically showing a mutual arrangement type transparent antenna according to another embodiment of the present invention.

FIG. 11 is a schematic plan view of a transparent antenna schematically showing a grid and a mesh-like non-conductive dummy portion.

FIG. 12 is a schematic block diagram illustrating a wireless communication device capable of performing information communication in a plurality of frequency bands.

FIG. 13 is a plan view showing a schematic plan structure of a conventional panel antenna.

FIG. 14 is a schematic partial sectional view of the conventional antenna shown in FIG.

[Explanation of symbols]

Reference Signs List 30 wireless communication device 32 flat panel electric display (flat panel display unit) 34 first transparent antenna (transparent antenna) 36 first transparent flat radiating element (transparent flat radiating element) 38 first transparent flat antenna ground plane ( Transparent plane ground plane) 40 First transparent thin film 44 Metal film structure 50 Second transparent antenna 52 Second transparent plane radiating element (Transparent plane radiating element) 54 Third transparent antenna 56 Fourth transparent antenna 58 Third 60 4th transparent plane radiation element (transparent plane radiation element) 62 2nd transparent thin film 70 3rd transparent thin film 74 transparent touch panel 76 4th transparent thin film 78 5th Transparent thin film 80 Non-conductive metal film structure (dummy part) 90 First receiving part (receiving part) 94 Second receiving part 98 Transmitting part

Claims (25)

[Claims] 1. A transparent antenna, comprising: a transparent thin film; and a transparent planar radiating element that operates at a predetermined frequency and is formed on the transparent thin film. 2. The transparent antenna according to claim 1, further comprising a transparent flat ground plane. 3. The transparent plane radiating element and the transparent plane ground plane are formed on the same plane by forming the transparent plane ground plane on the transparent thin film. 2. The transparent antenna according to 2. 4. The method according to claim 2, further comprising a second transparent thin film laminated with the transparent thin film, wherein the transparent plane ground plane is formed on the second transparent thin film. Transparent antenna. 5. The transparent antenna according to claim 1, wherein said transparent planar radiating element has a metal film structure comprising a plurality of metal wires provided at predetermined intervals. 6. The metal film structure may be a grid structure composed of a plurality of metal wires arranged in parallel with each other, or a plurality of metal wires arranged in parallel with each other and arranged in parallel with each other so as to be orthogonal to the metal wires. The transparent antenna according to claim 5, wherein the transparent antenna has a net structure including a plurality of metal wires formed. 7. The metal wire having the metal film structure includes copper, aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, 7. The transparent antenna according to claim 5, wherein the transparent antenna is made of a material selected from the group consisting of niobium, hafnium, indium, and an alloy of the above substances. 8. A transparent material according to claim 5, wherein the width of each metal line is in the range of 1 to 30 μm, and the gap between the metal lines is in the range of 30 μm to 1 mm. antenna. 9. The metal wire forming the metal film structure is formed of a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide, and the film has a thickness of 0.1 to 10 μm. The transparent antenna according to claim 5, wherein the transparent antenna is set. 10. The transparent antenna according to claim 3, further comprising a plurality of said transparent plane radiating elements, wherein said plurality of transparent plane radiating elements are formed on the same plane as said transparent plane ground plane. 11. A flat panel display unit, and a transparent antenna provided on the flat panel display unit and operating at a predetermined frequency, wherein the transparent antenna includes a highly conductive transparent plane radiating element and a highly conductive A wireless communication device comprising: a transparent flat ground plane. 12. The wireless communication apparatus according to claim 11, further comprising a transparent thin film, wherein the transparent plane radiating element and the transparent plane ground plane of the transparent antenna are formed on the transparent thin film. . 13. The transparent plane radiating element and the transparent plane ground plane have a metal film structure composed of a plurality of metal wires provided at predetermined intervals.
13. The wireless communication device according to 1 or 12. 14. The metal film structure may be a grid structure composed of a plurality of metal lines arranged in parallel with each other, or a plurality of metal lines arranged in parallel with each other and arranged in parallel with each other so as to be orthogonal to the metal lines. 14. The wireless communication device according to claim 13, wherein the wireless communication device has a network structure including a plurality of metal wires. 15. The metal wire having the metal film structure is made of copper,
Selected from the group consisting of aluminum, gold, silver, nickel, chromium, titanium, molybdenum, tin, tantalum, magnesium, cobalt, platinum, tungsten, manganese, silicon, zirconium, vanadium, niobium, hafnium, indium and alloys of the above substances The wireless communication device according to claim 13, wherein the wireless communication device is formed of a material. 16. The wireless communication device according to claim 13, wherein a width of each of the metal wires is in a range of 1 to 30 μm, and a gap between the metal wires is in a range of 30 μm to 1 mm. Communication device. 17. The metal wire forming the metal film structure,
The film is formed from a material selected from the group consisting of indium tin, indium tin oxide, and tin oxide, and the film is set to a thickness of 0.1 to 10 μm. Wireless communication device. 18. The semiconductor device according to claim 18, further comprising a dummy portion having a non-conductive film structure having substantially the same transparency as the metal film structure, wherein the dummy portion has a metal line group similar to the plurality of metal lines having the metal film structure. 15. The wireless communication device according to claim 13, wherein each of the metal wire groups is partially cut to form a non-conductive film structure. 19. A transparent antenna having a plurality of said transparent antennas, said plurality of transparent antennas having a transparent plane radiating element provided for each transparent antenna, and a transparent plane ground plane commonly used for a plurality of transparent antennas. 19. The method according to claim 11, wherein each transparent plane radiating element of the plurality of transparent antennas is formed on the same plane as a transparent plane ground plane commonly used by the plurality of transparent antennas. The wireless communication device according to claim 1. 20. A plurality of transparent thin films, wherein the plurality of transparent thin films are provided in a stacked manner, and wherein the plurality of transparent antennas are provided, wherein the plurality of transparent antennas are provided for each transparent antenna. It has a plane radiating element and a transparent plane ground plane commonly used for a plurality of transparent antennas, and each transparent plane radiating element of the plurality of transparent antennas is formed on a corresponding plurality of transparent thin films, respectively. The wireless communication device according to claim 11, wherein: 21. Further, a first transparent thin film on which the transparent plane radiating element is mounted, and a second transparent thin film laminated with the first transparent thin film and mounted with the transparent plane ground plane. The wireless communication device according to claim 11, further comprising a thin film. 22. A semiconductor device according to claim 22, further comprising a second transparent plane radiating element formed on the same plane as said transparent plane radiating element.
Wherein the two transparent planar radiating elements coexist in an interleaved metal film structure, and the metal film structure includes a plurality of metal wires provided at predetermined intervals. The wireless communication device according to claim 11, wherein: 23. A wireless communication device for communicating information in a plurality of frequency ranges, comprising: a first receiving unit having an input unit for receiving information at a first frequency; A second receiver having an input for receiving information at a second different frequency; a highly conductive transparent planar radiating element; and a highly conductive transparent planar ground plane, wherein the second receiver operates in conjunction with the first receiver. A first transparent antenna not connected to the second receiver while being connected as possible, a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane, A second transparent antenna that is operatively connected to the receiving unit and is not connected to the first receiving unit; the transparent plane radiating element and the transparent plane ground plane are spaced apart from each other by a predetermined distance To form a metal film structure consisting of a plurality of provided metal wires. Wireless communication apparatus according to symptoms. 24. A wireless communication device for communicating information in a plurality of frequency ranges, comprising: a receiving unit having an input unit for receiving information at a first frequency; and a second unit different from the first frequency. A transmitting unit having an input unit for receiving information at a frequency of, including a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane, while being operatively connected to the receiving unit;
A first transparent antenna not connected to the transmitting unit, including a highly conductive transparent plane radiating element and a highly conductive transparent plane ground plane, and operatively connected to the transmitting unit;
A second transparent antenna that is not connected to the receiving unit, wherein the transparent plane radiating element and the transparent plane ground plane form a metal film structure including a plurality of metal wires provided at predetermined intervals. A wireless communication device characterized by the above-mentioned. 25. The method according to claim 13, wherein each metal line of the metal film structure is formed corresponding to a non-display portion between pixels in the flat panel display section.
The wireless communication device according to any one of 4, 15, 16, 17, and 22.