KR20060121607A - Multi-layered flexible printed circuits board and reduction apparatus for radio frequency - Google Patents

Abstract

A multi-layered PCB of a mobile communication terminal is provided to offer an enough space to mount plural chip sets and electric parts for operating basic calculation functions and controlling electric signals, to minimize a size of the mobile communication terminal, and to offer a shielding structure which is capable of shielding wireless frequencies lowering a function of an antenna module of the terminal. A multi-layered PCB of a mobile communication terminal comprises a main body(120), an antenna module(300), an FPCB(Flexible PCB) and a shielding material. The main body(120) has a main PCB. The antenna module(300) is assembled at the main body(120) such that it can be electrically connected to the main PCB(120). The FPCB forms plural electric wiring with a certain pattern at an inner/outer layer, mounts plural chip sets and electric parts on a side selected between its one side or the other side, makes a vacant portion sequentially be folded such that the portions where the plural chip sets and electric parts are mounted are layered, and is electrically contacted to the main PCB. The shielding material is made of a material capable of shielding wireless frequencies discharged from the FPCB.

Description

MULTI-LAYERED FLEXIBLE PRINTED PRINCTED CIRCUITS BOARD AND REDUCTION APPARATUS FOR RADIO FREQUENCY}

1 is a side cross-sectional view showing the internal structure of a conventional slide type mobile communication terminal.

2 to 5 illustrate a radio frequency reduction device of a printed circuit board and a mobile communication terminal having a laminated structure according to an embodiment of the present invention.

2 is a side cross-sectional view illustrating an internal structure of a mobile communication terminal having a printed circuit board having a stacked structure according to an embodiment of the present invention.

3 is a perspective view showing the configuration of a printed circuit board having a laminated structure according to an embodiment of the present invention.

4 is a perspective view illustrating a radio frequency reduction apparatus of a mobile communication terminal according to an embodiment of the present invention.

5 is a perspective view illustrating a configuration of a printed circuit board having a laminated structure in which a radio frequency reduction device of a mobile communication terminal according to an embodiment of the present invention is mounted.

* Description of the symbols for the main parts of the drawings *

100: mobile communication terminal 110: cover part

111: display module 112: function keys

113: second printed circuit board 114: first printed circuit board

115: receiver hole 120: main body

121: key input unit 122: battery

123: microphone 124: third printed circuit board

125: main printed circuit board 200: receiver

300: antenna module 400: slide module

410: first slide rail 420: second slide rail

430: slider 500: chipset and electrical components

600: flexible circuit board 610: first surface

620: the second side 630: bent portion

640: electrical wiring 700: shielding material

710: adhesive material

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal, and more particularly, to a miniaturized main printed circuit board on which a plurality of chipsets and electrical components are mounted, and a printed circuit board having a laminated structure in which an antenna module can improve performance. It relates to a frequency reduction device.

In general, a mobile communication terminal is a wireless communication device that allows a user to carry a voice call with a specific person, and transmits a call message including a unique number of a receiver mobile communication terminal through a base station call channel to call a specific mobile communication terminal. After that, when a response is received from the mobile communication terminal, the system is configured to enable a call between the sender and the receiver.

In recent years, such mobile communication terminals have undergone many changes and developments in their functions and forms.In the functions of mobile communication terminals, only mobile phones can be used to play games, video on demand, electronic dictionary, and MP3. The latest mobile communication terminals capable of implementing the latest functions, such as players.

In addition, the mobile terminal has been developed from a bar-type mobile communication terminal to a flip-type, folder-type, and dual-foldable mobile terminal. In recent years, a slide type mobile communication terminal is developed in which a cover part of a mobile communication terminal is slidably moved. Recently, in the size of the mobile communication terminal, a small and thin mobile communication terminal has become the mainstream.

Herein, the structure of the mobile communication terminal of the slide type that has been recently developed and released among the above-described mobile communication terminals will be described with reference to FIG. 1.

1 is a side cross-sectional view illustrating an internal configuration of a conventional slide type mobile communication terminal. As shown in FIG. 1, a conventional mobile communication terminal 100 may display a liquid crystal display (LCD) for outputting an image signal. For convenience, control of various functions of the display module 111, such as a module), the first printed circuit board 114 for processing electrical signals of the display module 111, and the mobile communication terminal 100 is performed. And a cover 110 provided with a function key 112 capable of inputting data for the data and a second printed circuit board 115 for processing an electrical signal of the function key 112.

The cover 110 is a main printed circuit board 125 in which a plurality of chipsets and electrical components 500 are mounted to control basic arithmetic functions of the mobile communication terminal 100 and electrical signals of the display module 111 and the like. It is coupled to the main body portion 120 having a) and the cover 110 is configured to slide the movement relative to the main body portion 120 to open and close the front of the main body portion 1200.

In addition, the cover 110 is slide-coupled to the front of the main body 120, the cover 110 can be opened and closed the front of the main body 120 due to the sliding movement with respect to the main body 120. A slide module 400 is provided between the cover 110 and the main body 120 so as to slide the cover 110 and the main body 120.

Here, the main printed circuit board 125 provided in the conventional mobile communication terminal 100 has a plurality of basic control functions of the mobile communication terminal 100 and electrical signals of the display module 111 as described above. In order to allow the two chipsets and the electronic component 500 to be mounted, the width W1 is provided to correspond to the width of the main body.

That is, in the conventional mobile communication terminal 100, the main printed circuit board 125 provided in the main body 120 has a width W1 such that the plurality of chipsets and electrical components 500 can be mounted. Therefore, the main body 120 having the main printed circuit board 125 is formed to have a width sufficient to correspond to the width W1 of the main printed circuit board 125. There is a problem in that the overall size of the mobile communication terminal 100 acts as a factor of becoming larger.

Accordingly, an object of the present invention is to solve the above problems, and an object of the present invention is to provide a sufficient space for mounting a plurality of chipsets and electrical components for controlling basic arithmetic functions and electrical signals of a mobile communication terminal and moving at the same time. Reduced size of the communication terminal and reduced the printed circuit board and the radio frequency having a laminated structure to improve the performance of the antenna module by providing a shielding structure that can shield the radio frequency to reduce the function of the antenna module of the mobile communication terminal In providing a device.

In order to achieve the above object, a printed circuit board and a radio frequency reduction device having a laminated structure according to the present invention may be assembled to a main body part having a main printed circuit board, and to be electrically connected to the main printed circuit board. And a plurality of electrical wirings formed in a predetermined pattern on an inner layer or an outer layer thereof, and a plurality of chipsets and electrical components are mounted on a selected surface of one and the other surfaces, and the plurality of chipsets and electrical components are mounted. The flexible circuit board and the flexible circuit board is arranged so that the other parts are sequentially folded so that the plurality of chipset and the parts mounted with the electrical components can be laminated with each other and are in electrical contact with the main printed circuit board. Comprising a shielding material formed of a material that can shield the radio frequency emitted from the substrate Provided is a printed circuit board and a radio frequency reduction device having a laminated structure, characterized in that the.

According to the above configuration, while providing a sufficient space for mounting a plurality of chipsets and electrical components for controlling the basic arithmetic functions and electrical signals of the mobile communication terminal and at the same time downsizing the size of the mobile communication terminal and antenna of the mobile communication terminal By providing a shielding structure that can shield the radio frequency that degrades the function of the module has the effect of improving the performance of the antenna module.

Hereinafter, a mobile communication terminal according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 to 5 show a printed circuit board and a radio frequency reduction apparatus of a mobile communication terminal having a laminated structure according to an embodiment of the present invention, Figure 2 is a printed circuit having a laminated structure according to an embodiment of the present invention 3 is a side cross-sectional view illustrating an internal structure of a mobile communication terminal provided with a substrate, and FIG. 3 is a perspective view illustrating a configuration of a printed circuit board having a stacked structure according to an embodiment of the present invention.

As shown in FIG. 2, the mobile communication terminal 100 having a printed circuit board having a stacked structure according to an embodiment of the present invention includes a main body 120 having a main printed circuit board 125 and the main printing. The antenna module 300 assembled to the main body 120 to be electrically connected to the circuit board 125, and a plurality of electrical wiring 640 is formed in a predetermined pattern in the inner layer or the outer layer and a plurality of chipsets And an electric component 500 is mounted on one surface and a selected surface of the other surface, and a portion other than a portion where the plurality of chipsets and the electronic components 500 are mounted is sequentially folded to mount the plurality of chipsets and electrical components 500. The flexible parts of the flexible circuit board 600 are arranged to form a mutual stack and are in electrical contact with the main printed circuit board 125 and the radio frequency radiated from the flexible circuit board 600. It is configured to include a shielding material 700 formed of a material that can be discarded.

The printed circuit board having the laminated structure according to the embodiment of the present invention is a main printed circuit board 125 of a hard type, and is arranged in line with a battery provided in the mobile communication terminal 100. It is formed to a narrower width (W2) to reduce the width of the 120, the antenna module 300 may be composed of a built-in antenna module provided in the body portion 120.

In addition, a plurality of main surfaces of the main printed circuit board 125 is disposed to be in electrical contact with the main printed circuit board 125 and controls main functions of the mobile communication terminal 100 on one surface or a selected surface of the other surface of the main printed circuit board 125. Flexible circuit board 600 in which chipsets and electrical components 500 are mounted, and a plurality of electrical wirings for electrically connecting the plurality of chipsets and electrical components 500 to each other are formed in a predetermined pattern on an inner layer or an outer layer thereof. Is provided.

In this case, the main printed circuit board 125 has a narrower width W2 as described above, and thus the main printed circuit board 125 on which the plurality of chipsets and electrical components 500 can be mounted. The total area of the chipset is reduced, but the plurality of chipsets and electrical components 500 mounted on the main printed circuit board 125 having the large width W1 (see FIG. 1) are mounted on the front or the rear thereof. Since the plurality of chipsets and the electronic components 500 may be electrically connected to the main printed circuit board 125 because the plurality of chipsets and the electrical components 500 are disposed to be in electrical contact with the main printed circuit board 125 of the hard type. The structure and sufficient area can be provided.

In addition, the flexible printed circuit board 600 has a width in which the plurality of chipsets and the electrical components 500 can be mounted, and the width of the flexible printed circuit board 600 is the width of the main printed circuit board 125. (W2) is larger than the printed circuit board having a laminated structure according to an embodiment of the present invention is a flexible circuit board 600 having a larger width than the main printed circuit board 125 is shown in Figure 3 As shown in FIG. 5, the remaining layers 610 and 620 separated by the folded portions 630 are laminated to each other because the portions 630 are sequentially folded to form an upper side of the main printed circuit board 125. It is arranged to be in electrical contact with.

However, as described above, a part of the flexible circuit board 600 which is folded to form a stack is connected to a plurality of chipsets and electrical components 500 to connect electrical signals to the inner layer or the outer layer as shown in FIG. 3. Electrical wirings 640 are formed in a predetermined pattern, and the plurality of chipsets and electrical components 500 are driven when the plurality of chipsets and electrical components 500 mounted on the flexible circuit board 600 are driven. In the electrical wiring 640 which transmits an electrical signal of the antenna module 300 assembled to the main body 120 so that the radio frequency such as digital noise is discharged and electrically connected to the main printed circuit board. Decreases the communication signal transmission / reception characteristics.

Therefore, in the printed circuit board and the radio frequency reduction device having the laminated structure according to the embodiment of the present invention, a shielding material formed of a material capable of shielding the radio frequency emitted from the flexible circuit board 600 as shown in FIG. 4. To provide a 700, the shielding material 700 will be described with reference to Figs.

Figure 4 is a perspective view showing a radio frequency reduction device of a mobile communication terminal according to an embodiment of the present invention, Figure 5 is a printing having a laminated structure equipped with a radio frequency reduction device of a mobile communication terminal according to an embodiment of the present invention. It is a perspective view which shows the structure of a circuit board.

As shown in FIG. 4, a shielding material 700 provided in a printed circuit board having a laminated structure and a radio frequency reduction device of a mobile communication terminal according to an embodiment of the present invention is attached to one surface of the flexible circuit board 600. The conductive material may be formed of one selected from a conductive tape or a flux absorber coated with an adhesive material 710 on one surface thereof.

Here, the conductive tape or flux absorber is formed by melting the nickel (Ni) and the copper (Cu), and extruding it as a thin fiber, and then weaving it like a weave, and attaching one surface of the flexible circuit board 600 to one surface thereof. The adhesive material 710 may be applied to one surface thereof so as to be formed.

In addition, if the material capable of shielding the radio frequency in addition to the above-described conductive tape or flux absorber, the shielding material 700 may be configured.

The shielding material 700 having the above-described configuration is flexible so that the radio frequency radiated from the flexible circuit board 600 can be shielded from being transmitted to the built-in antenna module 300 as shown in FIG. 5. It is attached to the selected surface of the outer surface and the inner surface of the circuit board 600.

That is, the shielding material 700 is a radio frequency, such as digital noise emitted from a plurality of electrical wires 640 disposed in the portion 630 folded to form a plurality of layers to reach the antenna module 300 The shielding material 700 may be located between the flexible circuit board 600 and the built-in antenna module 300 in order to shield the shielding material, depending on the folded form or the position of the flexible circuit board 600. It is disposed between the substrate 600 and the antenna module 300 is attached to the selected surface of the outer surface and the inner surface of the flexible circuit board 600 to shield the radio frequency.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to

As described above, the printed circuit board and the radio frequency reduction device having the laminated structure according to the present invention provide a sufficient space for mounting a plurality of chipsets and electrical components for controlling basic arithmetic functions and electrical signals of a mobile communication terminal. At the same time, the size of the mobile communication terminal can be reduced, and the shielding structure capable of shielding the radio frequency that degrades the function of the antenna module of the mobile communication terminal can provide an effect of improving the performance of the antenna module.

Claims (4)

A main body having a main printed circuit board, An antenna module assembled to the main body to be electrically connected to the main printed circuit board; A plurality of electrical wirings are formed in a predetermined pattern on the inner layer or the outer layer, and a plurality of chipsets and electrical components are mounted on a selected surface of one side and the other side, and portions other than the portions where the plurality of chipsets and electrical components are mounted are sequentially. A flexible printed circuit board configured to be folded so that the plurality of chipsets and the mounted electronic components may be laminated with each other and disposed to be in electrical contact with the main printed circuit board; Printed circuit board and radio frequency reduction device having a laminated structure characterized in that it comprises a shielding material formed of a material capable of shielding the radio frequency radiated from the flexible circuit board. The method of claim 1, The antenna module is a printed circuit board and a radio frequency reduction device having a laminated structure, characterized in that the built-in antenna module provided in the main body. The method of claim 2, The shielding material is a printed circuit board and a radio frequency reduction device having a laminated structure, characterized in that formed on the one surface of the flexible circuit board to be attached to the adhesive material coated on one surface of the flexible material and the flux absorber. The method of claim 3, The shielding material is a printed circuit having a laminated structure, characterized in that the radio frequency radiated from the flexible circuit board is attached to a selected surface of the outer surface and the inner surface of the flexible circuit board to be shielded from being transmitted to the built-in antenna Substrate and Radio Frequency Reduction Device.

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