KR20180090536A - Arrangement structure for antenna module in electronic device and electronic device including the same - Google Patents

Abstract

Provided is an arrangement structure of an antenna module in an electronic device. The arrangement structure of an antenna module in an electronic device according to an exemplary embodiment of the present invention includes a circuit board which mounts at least one circuit element and is embedded in a main body of the electronic device; a cut part which is formed on the circuit board by being cut into a preset area; and the antenna module arranged in the cut part. Accordingly, the present invention can prevent the performance of the antenna module from being reduced.

Description

[0001] The present invention relates to an arrangement structure of an antenna module in an electronic device, and an electronic device including the antenna module.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an antenna module, and more particularly, to an antenna module arrangement structure in an electronic device applicable to an electronic device including an antenna module and an electronic device including the same.

The keyless entry system is a system for releasing the door lock without any operation of a separate key or a remote control. When the driver holds a key, the key and the electronic authentication device in the vehicle communicate with each other. The lock is released.

The modern keyless entry system, first introduced in the 1980s, uses circuit boards, coded RFID technology chips, batteries, and small antennas. Dual batteries and small antennas are used to send signals to vehicles that are a few feet away.

An antenna module used in such a keyless entry system is generally configured such that a coil is wound around a bar-type ferrite core and a plurality of antenna modules are mounted at predetermined positions.

Accordingly, when the reception antenna of the smart key is constituted by a single antenna coil, the communication distance (the distance at which data can be received at the vehicle side) is extremely high depending on the positional relationship with the direction of the magnetic field generated in the transmission antenna of the vehicle And there is a problem that communication can not be performed in the worst case.

That is, the reception antenna built in the smart key has a problem that reception sensitivity becomes worse when the axial direction of the antenna coil and the direction of the magnetic field generated by the transmission antenna of the vehicle are parallel to each other and the reception sensitivity is good and when they are orthogonal to each other.

Therefore, it is necessary to provide a non-directional characteristic so that the signal transmitted from the vehicle at all times can be received in a stable state at the receiving antenna of the smart key regardless of the position of the vehicle with respect to the antenna.

To this end, a three-axis antenna module has been proposed in which three coils are wound orthogonally to the magnetic core so as to be able to receive in all directions.

Meanwhile, as a portable device such as a smart phone develops, a method of implementing a keyless entry system by incorporating a receiving antenna in a smart phone instead of a smart key has been proposed.

However, since the conventional three-axis antenna module requires a minimum thickness of the magnetic core in order to secure reception characteristics in all directions, if the same is applied to a smartphone having a small size and a small size, There is a limit that can not be bound. Accordingly, there is a desperate need to maintain the performance of the 5-axis antenna module without increasing the thickness of the smartphone.

KR 10-1542000 B1

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna module arrangement structure in an electronic device capable of maintaining the performance of an antenna module without increasing the thickness of the electronic device and an electronic device including the same. There is a purpose.

According to an aspect of the present invention, there is provided an electronic apparatus comprising: a circuit board on which at least one circuit element is mounted and embedded in an electronic apparatus main body; A cut-out portion formed on the circuit board at a predetermined area; And an antenna module disposed in the cut-out portion.

Also, the antenna module may be disposed in the cut-out portion such that a side portion of the circuit board is positioned at an intermediate height.

Also, the antenna module may be a three-axis antenna module that is wound such that three coils are orthogonal to each other around the magnetic core.

For example, the cut-out portion may be formed on a corner side of the circuit board, and the circuit board may have an electrically connected auxiliary circuit board protruded toward the cut-out portion, and the antenna module is disposed on one side of the auxiliary circuit board . Here, the circuit board may be a hard circuit board, and the auxiliary circuit board may be a flexible circuit board.

At this time, the antenna module includes a plurality of terminal portions, and the antenna module may be mounted on one surface of the auxiliary circuit board so that the plurality of terminal portions are electrically connected to the corresponding terminal portions formed on the auxiliary circuit board.

Alternatively, the antenna module may be attached to one surface of the auxiliary circuit board via an adhesive layer, and a pair of lead portions drawn out from the plurality of coils constituting the antenna module may be electrically connected to the circuit pattern formed on the auxiliary circuit board .

As another example, the cut-out portion may be formed at a middle portion or a middle portion of the width of the circuit board, and the antenna module is maintained in a state of being disposed in the cut-out portion via a pair of fixed frames connected to the circuit board .

In this case, the circuit board includes a fixing hole formed at a position adjacent to the cut-out portion, and one end side of the fixing frame may be fixed to the circuit board through the fixing hole.

The pair of lead portions drawn out from the plurality of coils constituting the antenna module may be electrically connected to the circuit pattern formed on the circuit board.

Meanwhile, the antenna module arrangement structure in the above-described electronic device can be applied to an electronic device, and the electronic device can be a portable terminal.

According to the present invention, it is possible to minimize the space required for installing the antenna module even if the antenna module is incorporated in a portable device having a small size and a small size such as an electronic device, particularly a smart phone. Therefore, the overall thickness of the antenna module can be increased by the thickness of the circuit board while maintaining the overall thickness of the portable device, thereby preventing degradation of the performance of the antenna module.

FIG. 1 is an exemplary view showing an antenna module stacked on a circuit board, FIG.
FIG. 2 is a schematic view showing a structure of an antenna module arrangement in an electronic device according to an embodiment of the present invention,
Figure 3 is an illustration of the separation of Figure 2,
Fig. 4 is a side view of Fig. 2,
FIG. 5 is a schematic view showing an antenna module arrangement structure in an electronic device according to another embodiment of the present invention, FIG.
FIG. 6 is a sectional view of FIG. 5,
FIG. 7 is a schematic view showing an antenna module arrangement structure in an electronic device according to another embodiment of the present invention, FIG.
8 shows the separation diagram of Fig. 7,
FIG. 9 is a partial side view showing a state in which the antenna module is disposed in the incision portion in FIG. 7;
10 is a schematic view showing an antenna module that can be applied to the present invention,
11 is a schematic view showing another form of an antenna module applicable to the present invention,
FIG. 12 is an exemplary view illustrating a portable terminal to which an antenna module arrangement structure in an electronic device according to the present invention is applied.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In the drawings, parts not relating to the description are omitted for clarifying the present invention, and the same reference numerals will be added to the same or similar components throughout the specification.

The antenna module arrangement structure 100, 200, 300 in the electronic device according to an embodiment of the present invention includes the circuit boards 110 and 210, the cutouts 120 and 220, and the antenna modules 130 and 230 as shown in FIGS. do.

The circuit boards 110 and 210 are formed of a plate-shaped member having a predetermined area, and a circuit pattern for electrically connecting various circuit elements to each other may be formed on at least one surface. For example, the circuit boards 110 and 210 may be known rigid circuit boards such as phenol resin type, epoxy resin type, or composite resin type

12, the circuit boards 110 and 210 are built in the main body 1 of the electronic apparatus and are used to drive the main body 1 of the electronic apparatus or various functional modules At least one circuit element 12 may be mounted for driving the semiconductor device 10 (not shown). For example, the circuit element 12 may be a keyless entry system for controlling the locking or unlocking of at least one of the door or steering of the vehicle via wireless communication or a keyless entry system for controlling the starting, And a microcontroller for implementing the start system.

Here, the main body 1 of the electronic device may be various electronic devices such as a DMB, a notebook computer, a VR device, and an AR device, and may be a known portable terminal including a smart phone, a mobile phone, and a tablet PC.

The circuit boards 110 and 210 may be a main circuit board on which the AP chip is mounted or another circuit board on which circuit elements for driving various functional modules are mounted.

2 to 8, the circuit boards 110 and 210 may include cutouts 120 and 220 formed at a predetermined area on one side thereof, and the antenna modules 130 and 230 may be formed on the cutouts 220, 220).

Accordingly, the antenna module arrangement structures 100, 200, and 300 in the electronic device according to the present invention are configured such that the antenna modules 130 and 230 having a predetermined thickness are disposed on the cut-away portions 120 and 220, the thickness t1 of a part of the t2 can be accommodated (see Figs. 4 and 9).

That is, according to the present invention, since the antenna modules 130 and 230 are disposed on the side of the cutouts 120 and 220 without being stacked on one side of the circuit boards 110 and 210, even if the antenna modules 130 and 230 are embedded, (or thickness) of the same size as the thickness t2.

Accordingly, when the antenna module arrangement structures 100, 200, 300 according to the present invention are applied, the thickness t1 (t1, t2) of the circuit board is smaller than the thickness ) Can reduce the size of the installation space.

Therefore, even if the antenna modules 130 and 230 are embedded in the main body 1 of the electronic device together with the circuit boards 110 and 210, the space for installing the antenna modules 130 and 230 can be reduced, thereby realizing the thinness.

In addition, when the antenna modules 130 and 230 are disposed on the cutouts 120 and 220, the bottom surfaces of the antenna modules 130 and 230 and the bottom surfaces of the circuit boards 110 and 210 may be arranged to be flush with each other. The antenna module 130 and the antenna module 230 may be disposed at the same height. As a result, the antenna modules 130 and 230 having a relatively thicker thickness than the circuit boards 110 and 210 protrude from the upper surface and the lower surface of the circuit boards 110 and 210, respectively, The protrusion thickness t3 of the antenna modules 130 and 230 can be minimized.

In particular, as shown in FIG. 12, even if the antenna modules 130 and 230 are embedded in the mobile terminal body 1 having a small size and a small size, the space required for installing the antenna modules 130 and 230 can be minimized. Therefore, the total thickness of the antenna modules 130 and 230 can be increased by the thickness of the circuit boards 110 and 210 while maintaining the overall thickness of the portable terminal body 1, thereby preventing the performance of the antenna modules 130 and 230 from degrading .

In the present invention, the antenna modules 130 and 230 are electrically connected to the circuit boards 110 and 210 to be driven, and wireless communication can be performed through a predetermined frequency band. For example, the antenna modules 130 and 230 may transmit or receive signals regarding engine start, operation and stop of the vehicle, door opening, door lock, and vehicle position notification.

As shown in FIGS. 10 and 11, the antenna modules 130 and 230 may be three-axis antenna modules wound such that three coils 131, 132 and 133 are orthogonal to each other with the magnetic core 134 as a center. The antenna module 130 may have a plurality of terminal portions 135 for electrical connection with the circuit board 110 as shown in FIG. 11, a pair of lead portions 136 are drawn out from the respective coil bodies wound around the magnetic core 134 without a separate terminal portion as shown in FIG. 11, And the lead portion 136 may be electrically connected to the circuit boards 110 and 210.

However, the antenna modules 130 and 230 applicable to the present invention are not limited thereto, and the antenna modules 130 and 230 shown in FIGS. 10 and 11 may be combined with each other. The shape of the magnetic core 134, The position of the terminal portion 135 and the formation method of the terminal portion 135 can be appropriately changed. It is also noted that all of the known three-axis antenna modules can be applied if the three coils 131, 132 and 133 are in the form of a three-axis antenna module wound around the magnetic core 134 to be orthogonal to each other. In addition, it is noted that the three coils 131, 132 and 133 may be processed through the resin material to prevent the three coils 131, 132 and 133, which are arranged perpendicular to each other, from being exposed to the outside.

As shown in FIGS. 2 to 6, the antenna module arrangement structures 100 and 200 in an electronic device according to an exemplary embodiment of the present invention may include a cut-out portion 120 formed at a corner of the circuit board 110, And the auxiliary circuit board 140 electrically connected to the circuit board 110 protrudes toward the cutout 120. The antenna modules 130 and 230 may be disposed on the auxiliary circuit board 140 may be electrically connected to the auxiliary circuit board 140 in a state in which they are disposed on one side of the auxiliary circuit board 140. Here, the auxiliary circuit board 140 may be a known flexible circuit board, and a circuit pattern 142 for electrical connection with the antenna modules 130 and 230 may be formed on at least one surface.

At this time, the antenna module 130 may be electrically connected to the auxiliary circuit board 140 through the SMT method, as shown in FIGS. In this case, the antenna module 130 may have a plurality of terminal portions 135 electrically connected to both ends of the plurality of coils 131, 132, and 133 (see FIG. 10) A plurality of corresponding terminal portions 144 corresponding to the terminal portions 135 may be formed. Accordingly, the antenna module 130 is attached to one surface of the auxiliary circuit board 140 through the SMT method so that the terminal portions 135 and the corresponding terminal portions 144 can be electrically connected to each other.

5 and 6, a pair of lead portions 136 drawn out from the plurality of coil bodies may be formed on the circuit pattern 142 formed on the auxiliary circuit board 140. In other words, ). In this case, the antenna module 230 may be attached to one surface of the auxiliary circuit board 140 via a separate adhesive layer (not shown).

As another example, an antenna module arrangement structure 300 in an electronic device according to an embodiment of the present invention may have a configuration in which the cutouts 220 are formed in a length of the circuit board 210 And the antenna module 230 may be supported by a pair of fixed frames 150 in a state where the antenna module 230 is disposed in the cut-out portion 220.

The pair of fixing frames 150 may be a frame structure having a horizontal portion 151 and a vertical portion 152. The horizontal portions 151 and the vertical portions 152 may be formed on the circuit board 210 such that the vertical portions 152 face each other. 151 may be fixed. When the antenna module 230 is inserted between the pair of vertical portions 152 facing each other, the side portions of the antenna module 230 are respectively inserted into the vertical portions 152, As shown in Fig.

In addition, the fixing frame 150 may be formed with a latch 153 extending downward on the free end side of the horizontal part 151, and the circuit board 210 may be positioned at a position adjacent to the cut- The fixing hole 116 may be formed through the through hole. Accordingly, the fixing frame 150 can be fixed to the circuit board 210 by inserting the latching hole 153 into the fixing hole 116. Meanwhile, a filling material such as a solder ball may be filled in the fixing hole 116 to prevent the locking hole 153 from being detached from the fixing hole 116. In addition, the pair of fixed frames 150 may have a configuration in which the end portions of the vertical portions 152 facing each other are connected to each other through separate connection portions (not shown) and the antenna module 230 is disposed on the upper surface of the connection portion Lt; / RTI > However, the fixing method of the circuit board 210 and the fixing frame 150 is not limited thereto, and the end of the horizontal part 151 may be directly fixed to the circuit board 210 through a method such as soldering have.

In this case, the antenna module 230 may be electrically connected directly to the circuit pattern 112 formed on the circuit board 210 by a pair of lead portions 136 drawn out from the plurality of coil bodies.

Although the cutouts 120 and 220 are illustrated as being drawn inward from the edge of the circuit boards 110 and 210, the positions of the cutouts 120 and 220 may be appropriately changed . For example, the cutouts 120 and 220 may be in the form of perforations having a predetermined area inside the circuit boards 110 and 210.

In addition, the antenna module arrangement structure (100, 200, 300) in the electronic device according to the present invention can be applied to a known electronic device, and particularly applicable to a known portable terminal including a smart phone, a mobile phone, and a tablet PC have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100, 200, 300: antenna module arrangement structure 110, 210: circuit board
112: Circuit pattern 116: Fixed hole
120, 220: cutout 130, 230: antenna module
131, 132, 133: Coil 134:
135: terminal portion 136: lead portion
140: Auxiliary circuit board 142: Circuit pattern
144: corresponding terminal portion 150: fixed frame
151: horizontal part 152: vertical part
153:

Claims (12)

A circuit board on which at least one circuit element is mounted and embedded in the main body of the electronic apparatus;
A cut-out portion formed on the circuit board at a predetermined area; And
And an antenna module disposed in the cut-out portion. The method according to claim 1,
Wherein the antenna module is disposed in the cut-out portion such that a side portion of the circuit board is positioned at an intermediate height. The method according to claim 1,
Wherein the antenna module is a three-axis antenna module wound with three coils orthogonal to each other around a magnetic core. The method according to claim 1,
Wherein the cut-out portion is formed on an edge side of the circuit board, and an auxiliary circuit board electrically connected to the circuit board protrudes toward the cut-out portion, and the antenna module is disposed on one side of the auxiliary circuit board, Module layout structure. 5. The method of claim 4,
Wherein the circuit board is a rigid circuit board, and the auxiliary circuit board is a flexible circuit board. 5. The method of claim 4,
The antenna module includes a plurality of terminal portions, and the antenna module is mounted on one surface of the auxiliary circuit board so that the plurality of terminal portions are electrically connected to corresponding terminal portions formed on the auxiliary circuit board. Layout structure. 5. The method of claim 4,
Wherein the antenna module is attached to one surface of the auxiliary circuit board via an adhesive layer,
Wherein a pair of lead portions drawn out from a plurality of coils constituting the antenna module are electrically connected to a circuit pattern formed on the auxiliary circuit board. The method according to claim 1,
Wherein the cut-out portion is formed in a middle portion or a middle portion of the width of the circuit board,
Wherein the antenna module is maintained in a state where it is disposed in the cut through a pair of fixed frames connected to the circuit board. 9. The method of claim 8,
Wherein the circuit board includes a fixing hole formed at a position adjacent to the cut-out portion, the fixing frame having one end fixed to the circuit board through the fixing hole. 9. The method of claim 8,
Wherein a pair of lead portions drawn out from a plurality of coils constituting the antenna module are electrically connected to a circuit pattern formed on the circuit board. An electronic device comprising an antenna module arrangement structure in an electronic device according to any one of claims 1 to 10. A portable terminal comprising an antenna module arrangement structure in an electronic device according to any one of claims 1 to 10.

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