KR100879255B1 - Accessory for cellular phone Having DMB Antenna using Electroconductive Fiber - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile phone accessory (Accessory) in which a digital multimedia broadcasting (DMB) antenna using conductive fibers is provided. A DMMB antenna that uses a conductive fiber coated with a conductive polymer having a property of conducting electricity due to its molecular structure as a conductor, and receives a DMB broadcast signal including audio and video signals; And a connecting part made of the conductive fiber and performing a function of connecting the DMB signal transmitting and receiving unit of the mobile phone to each other.

According to the present invention, by embedding or attaching a DM antenna made of a fiber material to a mobile phone accessory, while implementing the same or more performance as a conventional removable DM antenna, there is no worry of losing the DM antenna and detachable detachment There is no effect that can be designed to meet the various needs of the user.

Conductive Fibers, Cell Phone Accessories, DMB Antennas

Description

Mobile phone accessory with embedded DMB antenna using conductive fiber {Accessory for cellular phone Having DMB Antenna using Electroconductive Fiber}

1 is a perspective view of an upright DMB antenna of a conventional metal material.

Figure 2 is a state of use of the upright DMB antenna of the existing metal material.

3 is an exemplary view of various conductive fibers.

Figure 4 is an illustration of a conductive fiber for each manufacturer.

5 is an exemplary view of a DMB antenna made of a conductive fiber according to a preferred embodiment of the present invention.

6 is an exemplary view of a cellular phone connection portion according to a preferred embodiment of the present invention.

7 is an illustration of a mobile phone accessory.

8 is a schematic diagram showing a twisting step of a conductive fiber;

9 is an exemplary diagram of a mobile phone with DM reception function.

10 is another illustration of a DMB antenna made of a conductive fiber according to a preferred embodiment of the present invention.

11 is another illustration of a mobile phone accessory.

12 is a comparison of the performance of a conventional DM antenna and a DM antenna according to a preferred embodiment of the present invention.

13 is a directivity result diagram of a DM antenna according to a preferred embodiment of the present invention.

The present invention relates to a mobile phone accessory with a built-in DMB antenna using a conductive fiber, and more particularly, by inserting a DMB antenna using a conductive fiber made of a synthetic polymer as a conductor into the accessory of the mobile phone. The present invention relates to a mobile phone accessory incorporating a DM antenna using conductive fibers that can be designed to suit a variety of types of mobile phone accessories and to meet various user's preferences.

DMB (Digital Multimedia Broadcasting) is emerging as a new concept of next-generation broadcasting that can conveniently watch various broadcasts anytime, anywhere in the mobile state, and DMB broadcasting is a satellite DMB and terrestrial repeater that transmits broadcasts using satellites. The terrestrial DMB may be classified into a terrestrial DMB that transmits a broadcast through the TV, and the terrestrial DMB may be viewed through a mobile communication terminal for receiving a DMB such as a mobile phone, a personal digital assistant (PDA), or a vehicle receiver.

Most mobile phones have a digital multimedia broadcasting (DMB) reception function. In order to receive a terrestrial DMB using a mobile phone, a separate DMB antenna is required in addition to an antenna for a call function. Conventional Terrestrial-DMB (T-DMB) antennas for cellular phones are external monopole antennas, as shown in FIGS. 1 and 2, and use metal as a conductor.

In addition, mobile phones are now recognized as a necessity possessed by an absolute majority of people, and the majority of mobile phone users attach and use accessories such as phone wipes, strips or necklaces to the mobile phones.

However, since a conventional DMB antenna for a cellular phone must be connected to the cellular phone main body whenever the DMMB is watched, the antenna needs to be attached to the cellular phone main body separately from the cellular phone accessory that a cellular phone user generally possesses. There was a problem that it is not easy and detachable is inconvenient.

In addition, since a conventional DMB antenna for a mobile phone is an upright type antenna of a metal material which is not easily deformed, there is a problem in that it is difficult to apply to various accessories that can respond to various preferences of a user.

In addition, the conventional DMB antenna for a mobile phone has a problem in that it adversely affects the environment due to corrosion of metal used as a conductor of the antenna in the manufacturing process or plating during the manufacturing process and requires expensive manufacturing cost.

An object of the present invention is to solve the above problems, there is no fear of losing the DM antenna by embedding or attaching a DM antenna made of a fiber material to the mobile phone accessories and inconvenience of detaching the DM antenna separately from the mobile phone accessories The present invention provides a mobile phone accessory with a built-in DMB antenna using no conductive fiber.

Another object of the present invention is to solve the above problems, by embedding or attaching a DMB antenna made of a fiber material to a mobile phone accessory, a DMB using a conductive fiber that can be designed to meet various needs of a mobile phone user. It is to provide mobile phone accessories with built-in antenna.

Another object of the present invention is to solve the above problems, to provide a mobile phone accessories with a built-in DMB antenna using a conductive fiber that can be manufactured in an environmentally friendly process and can reduce the manufacturing cost.

Before explaining the configuration of the present invention, it should be noted that the configuration that is not directly related to the technical gist of the present invention has been omitted within the scope of not disturbing the technical gist of the present invention.

The present invention for achieving the above object (s) relates to a mobile phone accessory (Accessory) with a built-in digital multimedia broadcasting (DMB) antenna using a conductive fiber, the mobile phone accessory main body; A DMMB antenna using a conductive fiber coated with a conductive polymer having a property of conducting electricity due to its molecular structure as a conductor, and receiving a DMB broadcast signal including audio and video signals; And a connecting part made of the conductive fiber and performing a function of connecting the DMB signal transmitting and receiving unit of the mobile phone to each other.

Preferably, the conductive polymer is polyacetylene, polypyrrole, polythiophene, polyphenylene vinylene, polyphenylene and polythiophene [3-alkyl. ] (polythiophene [3-alkyl]), characterized in that any one of the conductive polymers or two or more are mixed in a predetermined ratio.

Also preferably, the conductive fibers may be coated by applying the conductive polymer in a solution state to the substrate fiber surface.

Also preferably, the conductive fiber is produced by coating a monomer of the conductive polymer in a gaseous state by adsorbing the surface of the substrate fiber and polymerizing the conductive polymer in the substrate fiber.

Also preferably, the conductive fiber is Hyosung HV-12QE.

Also preferably, the conductive fiber is characterized in that Kolon KC-220 W28T2.

Also preferably, the conductive fiber is characterized in that the Clacarbo (Clacarbo).

Also preferably, the Clacarbo is characterized in that coated with urethane (urethane).

Also preferably, a spring coil is formed in the Clacarbo.

Also preferably, the Clacarbo is characterized in that a predetermined proportion of Teflon fibers are added.

Also preferably, the Clacarbo is characterized in that it has undergone a twisting process.

Also preferably, the carbon fiber may be mixed in a predetermined ratio with the Clacarbo in the twisting process.

Also preferably, the DMB is terrestrial DMB (T-DMB).

And, preferably, the DMB is a satellite DMB (S-DMB: Satellite-DMB).

Hereinafter, the conductive fiber used as the conductor of the DMB antenna embedded or attached to the cellular phone accessory according to the present invention will be described with reference to FIGS. 3 and 4.

FIG. 3 is an exemplary view of various conductive fibers, and FIG. 4 is an exemplary view of conductive fibers for each manufacturer.

Advances in fiber and polymer engineering have raised the electrical conductivity of fibers made of organic polymers as insulators to the level of conductors such as metals. The manufacturing method of a conductive fiber includes the method of post-processing a conductive material to a substrate fiber, and providing a conductive performance, the method of putting a conductive material in a fiber, etc.

Among these, the manufacturing method of the conductive fiber by the post-treatment method means a method of coating the conductive polymer on the surface of the substrate fiber. The conductive polymer refers to an organic polymer through electricity due to its molecular structure, and includes polyacetylene, polypyrrole, polythiophene, polyphenylene vinylene, polyphenylene and Polythiophene [3-alkyl] and the like. In addition to coating one conductive polymer on the surface of the substrate fiber, two or more conductive polymers are mixed at a predetermined ratio to the surface of the substrate fiber. By coating, conductivity can be obtained.

Among the conductive polymers, polyacetylene, polypyrrole, and polythiophene have a property of not being melted, and polythiophene [3-alkyl] substituted with a side branch has high solubility and meltability, and thus can be easily processed.

The conductivity of the conductive polymer is due to conjugate double bonds, the presence of π-electrons, doping, and the like.

The conjugated double bond refers to a chain structure in which a single bond and a double bond of carbon atoms found in a polymer such as polyacetylene are alternately repeated. Since the π-electrons in such a chain structure can move freely to some extent, it is also called "π-conjugated polymer".

In addition, doping such polymers by chemical or electrochemical methods can control the electrical conductivity in a wide range from insulators to metals.

When the fiber is manufactured from the conductive polymer alone, the mechanical properties of the fiber are weak and difficult to manufacture. Therefore, the method of adding the fiber to the existing synthetic fiber is preferable. There is a method of polymerizing a conductive polymer in the fiber by adsorption on the fiber surface in a gaseous state.

In the method of manufacturing the conductive fiber, a method of injecting a conductive material into the fiber is a method of injecting the conductive material into the fiber in the process of spinning the conductive material, the conductive material is carbon black (mica), mica (mica) or talc (talc) ) Can be used. The conductivity of the fiber is influenced not only by the type and amount of the conductive material but also by the shape of the conductive material.

In addition, a method of imparting conductivity by incorporating a monomer capable of forming a conductive polymer in a spinning solution and then polymerizing the conductive polymer in the fiber may be performed. Examples thereof include a method of preparing polyester or nylon by melt spinning or a method of spinning rayon in solution.

In a preferred embodiment of the present invention as the conductive fiber was used Clacarbo manufactured by Kuraray, Japan. The clavico is a yarn made by polymerizing the conductive polymer in the fiber by adsorbing the monomer of the conductive polymer to the fiber surface in a gaseous state in a general fiber yarn (Fiber). The substrate fiber of the clacarbo was polyester (150D / 48F) and polypyrrole was used as the conductive polymer, and FeCl ₃ was used as the neutralization catalyst. The clavico exhibits an excellent resistance value of 2 × 10 ⁻² Ω · cm, and has a performance suitable for a DMB antenna according to the present invention.

In order to increase the tensile strength of the Clarabo, it is preferable to repeatedly perform the twisting process. In addition, as a method for reinforcing the elasticity of the clavico may be coated with a urethane (urethane) or to form a spring coil (coil), it is possible to add a teflon (teflon) fiber or a soft component at the time of twisting. have.

3 and 4 can be seen a variety of conductive fibers prepared using the above-described manufacturing method, in particular, it can be seen that the substrate fiber, conductive polymer and resistance value of the clacarbo.

Hereinafter, a mobile phone accessory having a DMB antenna using conductive fibers according to a preferred embodiment of the present invention will be described with reference to FIGS. 5 and 6.

5 is an exemplary diagram of a DMB antenna made of a conductive fiber according to an exemplary embodiment of the present invention, and FIG. 6 is an exemplary diagram of a mobile phone connection unit according to an exemplary embodiment of the present invention.

In the preferred embodiment of the present invention, the clavica yarn is used as the conductive fiber, and the accessory into which the DMB antenna is inserted is set to be used in a mobile phone, but the technical spirit of the present invention is not limited thereto.

The present invention can also be implemented as the conductive fiber, Hyosung HV-12QE fiber or Kolon KC-220 W28T2 fiber shown in FIG. 3 and FIG. 4, and a DMB viewer such as a personal digital assistant (PDA) or a vehicle receiver (Receiver). Of course, other communication devices may be attached with accessories inserted in the DM antenna.

A mobile phone accessory having a DMB antenna using conductive fibers according to a preferred embodiment of the present invention includes a DMB antenna, an accessory body, and a connection part.

The DMB antenna is inserted into the accessory body to receive a DMMB broadcast signal including audio and video signals. In the DMB antenna shown in FIG. 5, a feeder formed at both ends of the DMB antenna can be seen, and the feeder is connected to a DMB signal transmitting / receiving unit (not shown in the drawing) of the mobile phone through the connection unit. Since the DMB antenna according to the present invention is designed to be suitable for the shape of a mobile phone accessory, it is not limited to the shape shown in FIG.

The DMB antenna according to the preferred embodiment of the present invention is preferably an antenna for terrestrial-DMB (T-DMB) viewing, but may also be set as an antenna for viewing satellite DMB (S-DMB). Will be readily understood by those skilled in the art.

The accessory body is used to be attached to the mobile phone body through the connection portion, and the DMB antenna is inserted. The accessory body performs a function of transmitting and receiving a DMB signal in addition to a function of a normal accessory. In a preferred embodiment of the present invention, the DMB antenna is set to be inserted into the accessory body, but may be set to be attached to the outside of the accessory body as long as it maintains the function of transmitting / receiving a DMB signal.

The connection unit performs a function of connecting the DM signal transmission / reception unit and the DM antenna of the mobile phone to each other. It is preferable that the connection part is made of conductive fibers such as the clacarbo, so that the shape thereof is not fixed even when attached to the DMB signal transmitting / receiving part of the mobile phone, so that movement or deformation is easy.

The connection part may be manufactured in a shape as shown in FIG. 6. The hook-shaped connection shown in FIG. 6 is typically used for a mobile phone accessory, and the DM signal transmission / reception part of the mobile phone can be designed in a ring shape so that the connection can be detached. The connection part is designed to be suitable for the connection between the DMB signal transceiver and the DMB antenna, and is not limited to the shape illustrated in FIG. 6.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 7 to 11.

FIG. 7 is an exemplary view of a mobile phone accessory, FIG. 8 is a schematic diagram showing a twisting process of conductive fibers, FIG. 9 is an exemplary view of a mobile phone with a DM reception function, and FIG. 10 is a preferred embodiment of the present invention. Is another exemplary diagram of a DMB antenna made of a conductive fiber according to FIG. 11, and FIG. 11 is another exemplary diagram of a mobile phone accessory.

The inventor designed the DMB antenna pattern as shown in FIG. 5 using the clacarbo as the conductor. The substrate of the DMB antenna may be manufactured by the clacarbo and may be manufactured by a weaving process. The DMB antenna shown in FIG. 5 is designed to be suitable for the shape of the commonly used mobile phone phone wipe shown in FIG. 7, and is manufactured in a circular shape and inserted into the mobile phone phone wipe of FIG.

When designing the circuit of the DMB antenna with a single yarn of the clavico, since the area required for receiving the DMB signal may not be secured, it is preferable to twist a plurality of single yarns of the clavicabo. 8 shows a schematic diagram of the clavica twisting process, through which the effect of improving the conductivity and durability of the clavico itself can be obtained.

The manufactured DMB antenna was inserted into the mobile phone phone wipe as shown in FIG. 7 and connected to the mobile phone having the DMB receiving function as shown in FIG. 9 using the connection unit as shown in FIG. Since the connection part of FIG. 6 requires considerable durability, it is preferable to mix carbon fiber with high tensile strength or yarn of synthetic rubber (or natural rubber) system to increase elasticity in the twisting process.

In addition to the DMB antenna illustrated in FIG. 5, a rectangular DMMB antenna as illustrated in FIG. 10 was further manufactured. The DMB antenna of FIG. 10 is designed to fit the shape of the cellular phone accessory of FIG.

Hereinafter, the results of antenna performance experiments on the cellular phone accessory incorporating the DMB antenna using the conductive fiber manufactured by the above-described method will be described with reference to FIGS. 12 and 13.

12 is a performance comparison diagram of a conventional removable DM antenna and a DM antenna according to a preferred embodiment of the present invention, and FIG. 13 is a directivity result diagram of a DM antenna according to a preferred embodiment of the present invention.

In Figure 12, the upper graph is a channel-specific reception sensitivity graph for a circular DMB antenna designed to fit the shape of the mobile phone phone wipes using a conductive fiber according to a preferred embodiment of the present invention, the graph below is a conventional It is a reception sensitivity graph for each channel for a general mobile phone detachable upright DMB antenna.

As shown in FIG. 12, the DMB antenna according to the preferred embodiment of the present invention shows excellent reception sensitivity up to about 7 dB for each channel compared to the conventional removable antenna, and the DMB antenna according to the preferred embodiment of the present invention. Deviation sensitivity of each channel is within 3dB.

13 shows a directivity distribution of three channels of a DMB antenna according to a preferred embodiment of the present invention. Although a slight deviation occurs depending on a receiving angle of the DMB antenna, it is sufficiently applied to a conventional DMMB mobile phone. It can be seen that the performance is possible.

Through experiments on the DMB antenna according to the preferred embodiment of the present invention, it was possible to obtain satisfactory results improved in radio wave reception sensitivity and the like than the conventional removable DM antenna.

As described above and described with reference to a preferred embodiment for illustrating the technical idea of the present invention, the present invention is not limited to the configuration and operation as shown and described as described above, it is a deviation from the scope of the technical idea It will be understood by those skilled in the art that many modifications and variations can be made to the invention without departing from the scope of the invention. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

According to the present invention described above, by embedding or attaching a DM antenna made of a fiber material to a mobile phone accessory, while implementing the same or better antenna performance than a conventional removable DM antenna, there is no fear of losing the DM antenna and detachable separately There is no inconvenience to have an effect.

According to the present invention described above, since it is possible to embed or attach a DMB antenna made of a fiber material to a cellular phone accessory having various shapes, it is possible to design a DMB antenna capable of meeting various needs of a user.

According to the present invention described above, by using the fiber material, the manufacturing process of the DM antenna is environmentally friendly, and the manufacturing cost is also low.

Claims (14)

In a mobile phone accessory with a digital multimedia broadcasting (DMB) antenna using an electroconductive fiber, A mobile phone accessory body; A DMMB antenna that uses a conductive fiber coated with a conductive polymer having a property of conducting electricity due to its molecular structure as a conductor, and receives a DMB broadcast signal including audio and video signals; And A mobile phone accessory having a DMB antenna using conductive fibers, including; a conductive part made of the conductive fiber and having a function of connecting the DMB signal transmitting and receiving unit and the DMB antenna of the mobile phone to each other. The method of claim 1, The conductive polymer is polyacetylene, polypyrrole, polythiophene, polyphenylene vinylene, polyphenylene and polythiophene [3-alkyl] (polythiophene [ 3-alkyl]) a mobile phone accessory with a built-in DM antenna using conductive fibers, characterized in that any one of a conductive polymer or two or more are mixed in a predetermined ratio. The method of claim 1, And the conductive fiber is coated with the conductive polymer in a solution state by coating the surface of the substrate fiber. The method of claim 1, The conductive fiber is coated by a method of adsorbing the monomer of the conductive polymer in the gaseous state on the surface of the substrate fiber and produced by the method of polymerizing the conductive polymer in the substrate fiber, DMB antenna using a conductive fiber Phone accessories with built-in. delete delete delete delete delete delete delete delete The method of claim 1, The DMB is a terrestrial DMB (T-DMB: Terrestrial-DMB) characterized in that the mobile phone accessories with a built-in DMB antenna using a conductive fiber. The method of claim 1, The DMB is a satellite DMB (S-DMB: Satellite-DMB) characterized in that the mobile phone accessories with a built-in DMB antenna using a conductive fiber.

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