KR20060059062A - A fpcb structure of a cellular phone - Google Patents

A fpcb structure of a cellular phone Download PDF

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Publication number
KR20060059062A
KR20060059062A KR1020040098229A KR20040098229A KR20060059062A KR 20060059062 A KR20060059062 A KR 20060059062A KR 1020040098229 A KR1020040098229 A KR 1020040098229A KR 20040098229 A KR20040098229 A KR 20040098229A KR 20060059062 A KR20060059062 A KR 20060059062A
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South Korea
Prior art keywords
fpcb
lines
mobile communication
communication terminal
antenna
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KR1020040098229A
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Korean (ko)
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김두현
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엘지전자 주식회사
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Priority to KR1020040098229A priority Critical patent/KR20060059062A/en
Publication of KR20060059062A publication Critical patent/KR20060059062A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0206—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings
    • H04M1/0208—Portable telephones comprising a plurality of mechanically joined movable body parts, e.g. hinged housings characterized by the relative motions of the body parts
    • H04M1/0214—Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
    • H04M1/0216—Foldable in one direction, i.e. using a one degree of freedom hinge
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0277—Details of the structure or mounting of specific components for a printed circuit board assembly

Abstract

본 발명은 이동통신 단말기의 FPCB 구조에 관한 것으로, 특히 FPCB에 의한 커플링 현상으로 안테나 송수신 감도가 저하되는 문제를 해결한 이동통신 단말기의 FPCB 구조에 관한 것이다.The present invention relates to an FPCB structure of a mobile communication terminal, and more particularly, to an FPCB structure of a mobile communication terminal that solves a problem of deterioration in antenna transmission and reception sensitivity due to a coupling phenomenon caused by an FPCB.

상기한 목적을 달성하기 위한 본 발명에 따른 이동통신 단말기의 카메라로 신호를 전달하는 FPCB 구조는, 다수의 선로가 일정한 간격으로 패턴된 제1 FPCB와, 다수의 선로가 상기 제1 FPCB의 선로간 간격에 대응되는 위치에 패턴된 제2 FPCB가 겹쳐져 이루어진 것을 특징으로 한다.In order to achieve the above object, an FPCB structure for transmitting a signal to a camera of a mobile communication terminal includes a first FPCB having a plurality of lines patterned at regular intervals, and a plurality of lines between the lines of the first FPCB. The patterned second FPCB is superimposed on a position corresponding to the interval.

단말기, FPCB, 카메라, 안테나Terminal, FPCB, Camera, Antenna

Description

이동통신 단말기의 ＦＰＣＢ 구조{A FPCB Structure of a Cellular Phone}FPCB structure of a mobile terminal {A FPCB Structure of a Cellular Phone}

도 1은 이동통신 단말기의 일부 절개 사시도.1 is a partially cutaway perspective view of a mobile communication terminal.

도 2는 종래의 FPCB 구조를 나타내기 위하여 도 1의 A-A'의 단면을 나타낸 사시도.Figure 2 is a perspective view showing a cross section of AA 'of Figure 1 to show a conventional FPCB structure.

도 3은 본 발명에 따른 FPCB 구조를 나타내기 위하여 도 1의 A-A'의 단면을 나타낸 사시도.Figure 3 is a perspective view showing a cross-section of AA 'of Figure 1 in order to show the FPCB structure according to the present invention.

본 발명은 이동통신 단말기의 FPCB 구조에 관한 것으로, 특히 FPCB에 의한 커플링 현상으로 안테나 송수신 감도가 저하되는 문제를 해결한 이동통신 단말기의 FPCB 구조에 관한 것이다.The present invention relates to an FPCB structure of a mobile communication terminal, and more particularly, to an FPCB structure of a mobile communication terminal that solves a problem of deterioration in antenna transmission and reception sensitivity due to a coupling phenomenon caused by an FPCB.

근래의 이동통신 단말기는 디지털 카메라를 구비하면서 사진/동영상을 촬영하여 저장하거나 타 정보 단말기로 전송할 수 있도록 되어 있다.Recently, a mobile communication terminal is equipped with a digital camera to capture and store a picture / video or to transmit to another information terminal.

도 1을 참고하여 보면, 이러한 디지털 카메라(110)는 통상적으로 모듈화되어 이동통신 단말기(100)에 내장되고, FPCB(Flexible Printed Circuit Board: 가요성 인쇄회로기판, 120)에 의하여 단말기에 내장된 메인보드(130)와 연결되면서 전원을 비롯한 제어 및 화상 신호를 교환한다.Referring to FIG. 1, such a digital camera 110 is typically modularized and embedded in a mobile communication terminal 100, and a main board embedded in a terminal by a flexible printed circuit board (FPCB) 120. It is connected to the board 130 and exchanges control and image signals including power.

이와 같은 FPCB(120)는 다수의 선로가 내부에 패턴된 FPCB 두 장이 겹쳐진 채 카메라(110)와 메인보드(130)를 연결하는데, 이때 선로의 배치가 나타나도록 종래의 FPCB 의 단면을 나타낸 도 2를 참조하여 보면, 두 FPCB(210,220)는 동일하게 다수의 선로(211,212)가 서로 일정한 간격을 두고 FPCB 단면에 배치되면서 두 FPCB(210,220)가 겹치게 되면 각 FPCB 선로들(211)은 다른 FPCB 의 대응되는 선로들(212)과 겹쳐지게 된다.The FPCB 120 connects the camera 110 and the main board 130 with two lines of FPCBs having a plurality of lines patterned therein. In this case, FIG. 2 shows a cross section of a conventional FPCB so that the arrangement of the lines appears. Referring to FIG. 2, when two FPCBs 210 and 220 are identically arranged in cross-sections of FPCBs with a plurality of lines 211 and 212 spaced at regular intervals from each other, each of the FPCB lines 211 may correspond to another FPCB. Overlapping tracks 212.

이동통신 단말기(100)에는 기지국과 송수신을 하기 위한 안테나(140)가 도 1에서 도시된 바와 같이 구비되는데, FPCB(120)가 안테나(140)와 충분히 가까운 거리에 위치하게 되는 경우, 일예로 카메라(110)가 이동통신 단말기(100)의 중심부에 놓이게 되면서 FPCB(120)가 안테나(140)와 가깝게 위치하게 된다면 이러한 종래의 FPCB(120)와 안테나(140)사이에는 커플링 현상이 발생한다.The mobile communication terminal 100 is provided with an antenna 140 for transmitting and receiving with the base station as shown in Figure 1, when the FPCB 120 is located close enough to the antenna 140, for example, a camera When the 110 is located at the center of the mobile communication terminal 100 and the FPCB 120 is located close to the antenna 140, a coupling phenomenon occurs between the conventional FPCB 120 and the antenna 140.

즉, 상기한 바와 같은 전원을 비롯한 제어 및 화상 신호가 FPCB(120)의 선로를 통해 이동하면서 선로에서는 에너지가 전자파의 형태로 외부로 방사되고, 이러한 에너지는 충분히 가까운 거리에 위치한 안테나(140)에 직접 유입되거나 안테나(140)에 흐르는 송수신 신호와 간섭되면서, 안테나의 송수신 감도를 저하시키게 되는 것이다.That is, while the control and image signals, including the power supply as described above is moved through the line of the FPCB 120, energy is radiated to the outside in the form of electromagnetic waves, and such energy is transmitted to the antenna 140 located at a sufficiently close distance. While directly interfering with the transmission / reception signal flowing through the antenna 140, the transmission / reception sensitivity of the antenna is reduced.

이때, 종래의 FPCB(120)에서는 두 FPCB(210,220)의 대응되는 선로(211,221)가 겹쳐져 있으면서 상대적으로 선로를 흐르는 신호의 집중도가 높아 안테나(140)에 커플링되는 에너지가 많게 된다.In this case, in the conventional FPCB 120, the corresponding lines 211 and 221 of the two FPCBs 210 and 220 are overlapped with each other and the concentration of signals flowing along the line is relatively high, thereby increasing the energy coupled to the antenna 140.

본 발명의 목적은 이러한 종래 기술의 문제점을 해결하기 위하여 FPCB 내 선로의 구조를 변경하여 안테나에 커플링되는 에너지의 양을 감소시킴으로써, 안테나의 송수신 감도가 저하되는 문제를 해결하는 이동통신 단말기의 FPCB 구조를 제공하는 데에 있다.An object of the present invention is to reduce the amount of energy coupled to the antenna by changing the structure of the line in the FPCB to solve the problems of the prior art, the FPCB of the mobile communication terminal to solve the problem that the transmission and reception sensitivity of the antenna is lowered To provide a structure.

상기한 목적을 달성하기 위한 본 발명에 따른 이동통신 단말기의 카메라로 신호를 전달하는 FPCB 구조는, 다수의 선로가 일정한 간격으로 패턴된 제1 FPCB와, 다수의 선로가 상기 제1 FPCB의 선로간 간격에 대응되는 위치에 패턴된 제2 FPCB가 겹쳐져 이루어진 것을 특징으로 한다.In order to achieve the above object, an FPCB structure for transmitting a signal to a camera of a mobile communication terminal includes a first FPCB having a plurality of lines patterned at regular intervals, and a plurality of lines between the lines of the first FPCB. The patterned second FPCB is superimposed on a position corresponding to the interval.

상기 제1 FPCB의 선로가 안테나와 먼 방향의 선로간 간격으로 쉬프트된 위치에 대응되도록 상기 제2 FPCB의 선로가 패턴된 것을 특징으로 한다.The line of the second FPCB is patterned so that the line of the first FPCB corresponds to the shifted position at intervals between the antenna and the line in the distant direction.

이하, 본 발명에 따른 이동통신 단말기의 FPCB 구조의 바람직한 일 실시예를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, a preferred embodiment of an FPCB structure of a mobile communication terminal according to the present invention will be described in detail with reference to the accompanying drawings.

본 발명이 적용된 이동통신 단말기는 상기한 도 1에 도시된 것과 동일하게 일 측면에 안테나(140)가 구비되어 기지국과 무선으로 송수신을 하고, 카메라(110)는 이동통신 단말기(100)의 중심부에 힌지결합을 하여 회전이 가능하며 FPCB(120)에 의하여 메인보드(130)와 연결된다.The mobile communication terminal to which the present invention is applied is provided with an antenna 140 on one side in the same manner as shown in FIG. 1 to transmit and receive wirelessly with a base station, and the camera 110 is located at the center of the mobile communication terminal 100. The hinge is rotatable and connected to the main board 130 by the FPCB 120.

이때, 메인보드(130)는 PCB(Printed Circuit Board)에 MSM(Mobile Station Medem) 칩 등의 부품이 실장되어 이루어져, 이동통신 단말기의 전반적인 기능을 구 현하며 특히 안테나(140)를 통한 기지국과의 송수신, 카메라(110)와의 신호교환을 주도한다.At this time, the main board 130 is made by mounting components such as MSM (Mobile Station Medem) chip on a printed circuit board (PCB), and implements the overall functions of the mobile communication terminal, in particular with the base station through the antenna 140 Transmit and receive, and drive the signal exchange with the camera (110).

FPCB(120)는 일예로 폴리이미드(polyimid) 필름에 동박(copper foil)으로 선로를 패턴하여 이루어져 내열성 및 내약품성, 내곡성을 가지고, 카메라(110)가 회전함에 따라 자연스럽게 휘어지면서 카메라(110)와 메인보드(130)간에 안정적으로 신호를 연결한다.For example, the FPCB 120 is formed by patterning a line with a copper foil on a polyimide film, and has heat resistance, chemical resistance, and bending resistance, and the camera 110 naturally bends as the camera 110 rotates. And the signal between the main board 130 reliably.

도 3을 참고하여 보면, FPCB는 제1 FPCB(310)와 제2 FPCB(320) 두개가 겹쳐져 카메라(110)와 메인보드(130)를 동시에 연결하고, 각 FPCB(310,320)에는 직선형의 선로가 다수개 패턴되면서 병렬적으로 신호를 연결한다.Referring to FIG. 3, the FPCB overlaps the first FPCB 310 and the second FPCB 320 to connect the camera 110 and the main board 130 at the same time, and each FPCB 310 and 320 has a straight line. Multiple patterns are connected in parallel.

일예로 각 FPCB(310,320)에 세 선로가 패턴되어 있다고 할 때, 제1 FPCB(310)에 패턴된 선로를 일 방향으로부터 1A, 1B, 1C 라 하고, 제2 FPCB(320)에 패턴된 선로를 동일한 방향으로부터 2A, 2B, 2C 라 한다.For example, when three lines are patterned in each of the FPCBs 310 and 320, the lines patterned in the first FPCB 310 are referred to as 1A, 1B, and 1C from one direction, and the lines patterned in the second FPCB 320 are represented. It is called 2A, 2B, and 2C from the same direction.

1A, 1B, 1C는 제1 FPCB(310) 내에서 서로 일정한 간격을 유지하며 배열되어진다.1A, 1B, and 1C are arranged at regular intervals from each other in the first FPCB 310.

2A, 2B, 2C도 제2 FPCB(320) 내에서 서로 일정한 간격을 유지하며 배열되어지되, 그 위치는 제1 FPCB(310)와 제2 FPCB(320)가 겹쳐졌을 때 1A, 1B, 1C 간의 간격에 해당하는 위치이다.2A, 2B, and 2C are also arranged to be spaced apart from each other in the second FPCB 320, the position between the 1A, 1B, 1C when the first FPCB 310 and the second FPCB 320 overlap The position corresponding to the interval.

따라서 제1 FPCB(310)와 제2 FPCB(320)가 겹쳐질 때 전체적으로는 1A, 2A, 1B, 2B, 1C, 2C 와 같은 순서로 차례대로 놓이게 된다.Accordingly, when the first FPCB 310 and the second FPCB 320 overlap each other, the first FPCB 310 and the second FPCB 320 are sequentially placed in the same order as 1A, 2A, 1B, 2B, 1C, and 2C.

이러한 FPCB가 이동통신 단말기(100) 내의 안테나(140)에 영향을 미치는 커 플링 현상의 면에서 보자면, FPCB의 선로가 겹쳐있지 않고 분산되어 있으면서 FPCB 전체의 임피던스가 증가하는 듯한 효과를 나타내므로 안테나에 영향을 미치는 FPCB 신호의 에너지 양이 감소하여 안테나의 송수신 감도의 저하가 감소하게 된다.In view of the coupling phenomenon in which the FPCB affects the antenna 140 in the mobile communication terminal 100, the impedance of the entire FPCB is increased while the lines of the FPCB are not overlapped but distributed. The amount of energy of the affected FPCB signal is reduced, thereby decreasing the transmission / reception sensitivity of the antenna.

더욱 바람직하게는, 제1 FPCB(310)의 선로 1A, 1B, 1C 중에서 안테나에 가까운 선로가 1A 라고 할 때, 제2 FPCB의 선로 2A, 2B, 2C 는 1A, 1B, 1C 와 겹치는 위치에서 안테나와 먼 방향으로 쉬프트된 선로간 간격, 즉 2A는 1A와 1B의 사이에, 2B는 1B와 1C의 사이에, 2C는 1C 다음에 놓이도록 하여, 선로와 안테나의 거리가 전체적으로 멀어지는 효과를 얻음으로써 커플링 현상을 감소시킬 수 있게 된다.More preferably, when a line close to the antenna is 1A among the lines 1A, 1B, and 1C of the first FPCB 310, the lines 2A, 2B, and 2C of the second FPCB are overlapped with the antennas 1A, 1B, and 1C. The distance between the tracks shifted in the distant direction, i.e., 2A lies between 1A and 1B, 2B lies between 1B and 1C, and 2C follows 1C, thereby achieving the effect of the distance between the line and the antenna as a whole. It is possible to reduce the coupling phenomenon.

상기한 바와 같은 본 발명의 이동통신 단말기의 FPCB 구조에 의하면, 커플링 현상으로 FPCB가 안테나에 미치는 영향이 감소하게 되어 안테나의 송수신 감도가 저하되는 것을 막는 효과가 있다.According to the FPCB structure of the mobile communication terminal of the present invention as described above, the effect of the FPCB on the antenna due to the coupling phenomenon is reduced, there is an effect that the transmission and reception sensitivity of the antenna is reduced.

Claims (2)

이동통신 단말기의 카메라로 신호를 전달하는 FPCB 구조에 있어서,In the FPCB structure for transmitting a signal to the camera of the mobile communication terminal, 다수의 선로가 일정한 간격으로 패턴된 제1 FPCB와, A first FPCB in which a plurality of lines are patterned at regular intervals, 다수의 선로가 상기 제1 FPCB의 선로간 간격에 대응되는 위치에 패턴된 제2 FPCB가 겹쳐져 이루어진 것을 특징으로 하는 이동통신 단말기의 FPCB 구조.A plurality of lines of the FPCB structure of the mobile communication terminal, characterized in that the patterned second FPCB overlapping the position corresponding to the interval between the lines of the first FPCB. 청구항 1에 있어서, The method according to claim 1, 상기 제1 FPCB의 선로가 안테나와 먼 방향의 선로간 간격으로 쉬프트된 위치에 대응되도록 상기 제2 FPCB의 선로가 패턴된 것을 특징으로 하는 이동통신 단말기의 FPCB 구조.And a line of the second FPCB is patterned so that the line of the first FPCB corresponds to a position shifted at intervals between the antenna and the line in a distant direction.
KR1020040098229A 2004-11-26 2004-11-26 A fpcb structure of a cellular phone KR20060059062A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11570895B2 (en) 2020-06-02 2023-01-31 Samsung Electronics Co., Ltd. Electronic device including multiple printed circuit boards

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11570895B2 (en) 2020-06-02 2023-01-31 Samsung Electronics Co., Ltd. Electronic device including multiple printed circuit boards
US11864318B2 (en) 2020-06-02 2024-01-02 Samsung Electronics Co., Ltd. Electronic device including multiple printed circuit boards

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