KR19990057553A - Mounting Method and Jig of Circuit Board Using Conductive Film - Google Patents

Mounting Method and Jig of Circuit Board Using Conductive Film Download PDF

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Publication number
KR19990057553A
KR19990057553A KR1019970077611A KR19970077611A KR19990057553A KR 19990057553 A KR19990057553 A KR 19990057553A KR 1019970077611 A KR1019970077611 A KR 1019970077611A KR 19970077611 A KR19970077611 A KR 19970077611A KR 19990057553 A KR19990057553 A KR 19990057553A
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South Korea
Prior art keywords
semiconductor device
conductive film
circuit board
substrate
jig
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KR1019970077611A
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Korean (ko)
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KR100275440B1 (en
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김원규
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구자홍
엘지전자 주식회사
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Priority to KR1019970077611A priority Critical patent/KR100275440B1/en
Publication of KR19990057553A publication Critical patent/KR19990057553A/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04Mounting of components, e.g. of leadless components
    • H05K13/046Surface mounting
    • H05K13/0469Surface mounting by applying a glue or viscous material

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

본 발명은 전도성 필림을 이용하여 반도체부품을 회로기판에 간단히 접합할 수 있도록 한 전도성 필림을 이용한 회로기판의 실장 방법 및 지그에 관한 것으로, 기판의 반도체 디바이스 대응 동박패드상에 전도성 필림을 접착하고, 반도체 디바이스의 리드의 풋프린트가 상기 전도성 필림상에 위치하도록 상기 반도체 디바이스를 기판상에 장착한 후, 반도체 디바이스의 리드의 풋프린트를 가열가압하여 반도체 디바이스와 기판의 패턴을 접속하는 것이다.The present invention relates to a method for mounting a circuit board and a jig using a conductive film that allows a semiconductor component to be easily bonded to a circuit board using a conductive film. The conductive film is bonded onto a copper foil pad corresponding to a semiconductor device of a substrate, The semiconductor device is mounted on a substrate so that the footprint of the lead of the semiconductor device is located on the conductive film, and then the footprint of the lead of the semiconductor device is heated and pressed to connect the pattern of the semiconductor device and the substrate.

Description

전도성 필림을 이용한 회로기판의 실장 방법 및 지그Mounting Method and Jig of Circuit Board Using Conductive Film

본 발명은 회로기판의 실장방법에 관한 것으로, 특히 전도성 필림을 이용하여 반도체부품을 회로기판에 간단히 접합할 수 있도록 한 전도성 필림을 이용한 회로기판의 실장 방법 및 지그에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a circuit board, and more particularly, to a method and a jig for mounting a circuit board using a conductive film to enable a semiconductor component to be easily bonded to the circuit board using a conductive film.

회로기판의 패드와 부품의 전기적 접속을 위한 종래의 회로기판의 실장방법은, 도 1 내지 도 10에 도시된 바와 같이, 베어보드(bare board)(3)상에 개구부(2)가 형성된 마스크(1)를 장착하고, 상기 보드(3)의 동박패드(7)상에 스퀴이즈(4)를 이용하여 마스크(1)의 개구부(2)를 통해 솔더 페이스트(5)를 인쇄한 다음, 그 위에 반도체 집적회로 및 전자 부품등의 상면부품(8)를 마운팅하고 리플로우 솔더링하여 동박패드(7)상에 인쇄된 솔더 페이스트(5)를 용융시키어 납땜한다. 이어서, 기판(3)을 반전한 후 다시 상기 과정을 반복하여 하면부품(8')을 실장하여, 회로기판의 양면에 부품을 실장 접속한다.A conventional method of mounting a circuit board for electrical connection between a pad of a circuit board and a component includes a mask having an opening 2 formed on a bare board 3 as shown in FIGS. 1 to 10. 1), the solder paste 5 is printed on the copper foil pad 7 of the board 3 using the squeeze 4 through the opening 2 of the mask 1, and then on it. Top components 8, such as semiconductor integrated circuits and electronic components, are mounted and reflow soldered to melt and solder the solder paste 5 printed on the copper foil pad 7. Subsequently, after inverting the board 3 and repeating the above process, the lower surface component 8 'is mounted to mount and connect the components on both sides of the circuit board.

그런데, 피치가 0.4nn이하의 초미세 부품이 회로기판에 실장되는 경우, 피치간의 거리가 매우 짧아서, 부품리드와 기판의 패드를 접하는 솔더페이스트의 인쇄가 매우 어렵고, 인쇄후 부품의 마운팅공정에서 인쇄된 솔더페이스트가 무너져 단락간 숏트되는 현상이 다발하게 되며, 수리도 대단히 곤란하여 생산성이 저하되는 문제점이 있었다.However, when ultra-fine components having a pitch of 0.4 nn or less are mounted on a circuit board, the distance between the pitches is very short, and it is very difficult to print the solder paste in contact with the component leads and the pads of the substrate, and to print in the mounting process of the components after printing. As a result, the solder paste collapses, causing short-circuit to be short-circuited, and repair is very difficult, resulting in a decrease in productivity.

본 발명은 이러한 종래기술의 문제점을 해결하기 위한 것으로, 전도성 필림을 이용하여 회로기판에 회로부품을 간단히 접합할 수 있는 전도성 필림을 이용한 회로 기판의 실장 방법 및 지그의 제공을 목적으로 한다.The present invention has been made to solve the problems of the prior art, and an object of the present invention is to provide a method of mounting a circuit board and a jig using a conductive film which can easily bond a circuit component to a circuit board using a conductive film.

상기 목적을 달성하기 위하여, 본 발명의 전도성 필림을 이용한 회로기판의 실장 방법은, 기판의 반도체 디바이스 대응 동박패드상에 전도성 필림을 접착하고, 반도체 디바이스의 리드의 풋프린트가 상기 전도성 필림상에 위치하도록 상기 반도체 디바이스를 장착한 후, 상기 반도체 디바이스의 리드의 풋프린트를 가열가압하여 반도체 디바이스와 기판의 패턴을 접속하는 것을 특징으로 한다.In order to achieve the above object, in the method of mounting a circuit board using the conductive film of the present invention, a conductive film is adhered onto a copper foil pad corresponding to a semiconductor device of a substrate, and a footprint of a lead of the semiconductor device is positioned on the conductive film. After mounting the semiconductor device, the footprint of the lead of the semiconductor device is heated and pressed to connect the semiconductor device and the pattern of the substrate.

도 1 은 솔더페이스트 인쇄용 마스크의 사시도.1 is a perspective view of a mask for solder paste printing;

도 2 는 회로기판의 패드상에 솔더페이스트를 인쇄하는 상태의 단면도.2 is a cross-sectional view of a state where solder paste is printed on a pad of a circuit board.

도 3 내지 도 10은 종래의 회로기판의 실장방법의 공정도.3 to 10 is a process diagram of a mounting method of a conventional circuit board.

도 11 는 본 발명의 지그의 측면도.11 is a side view of the jig of the present invention.

도 12 는 본 발명의 지그의 평면도,12 is a plan view of the jig of the present invention,

도 13 는 본 발명의 회로기판의 패드상에 전도성필림이 부착된 상태도.Figure 13 is a state attached to the conductive film on the pad of the circuit board of the present invention.

도 15 내지 도 25 는 본 발명의 회로기판의 실장방법의 공정도.15 to 25 are process diagrams of a method for mounting a circuit board of the present invention.

도 26 내지 도 28 는 전도성 필림에 의한 접속원리의 설명도.26 to 28 are explanatory diagrams of a principle of connection by a conductive film.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

3 : 회로기판7 : 동박패드3: circuit board 7: copper foil pad

7' : 반도체디바이스 대응 패드8 : 반도체디바이스7 ': semiconductor device compatible pad 8: semiconductor device

8a : 풋프린트10 : 지그8a: Footprint 10: Jig

11 : 돌출리드12 : 공간부11: protrusion lead 12: space part

20 : 전도성 필림21 : 접착제20 conductive film 21 adhesive

22 : 대전입자22: charged particle

이하, 첨부 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 회로기판의 실장용 지그(10)는, 도 11 내지 도 14에 도시된 바와 같이, 반도체 디바이스의 형상과 대응하도록 형성되고, 반도체 디바이스를 수납하기 위한 공간부(12)와, 상기 공간부(12)의 둘레에 형성되어, 상기 디바이스의 리드의 풋프린트를 가압 가열하기 위한 돌출리드부(11)를 구비하고 있다.The mounting jig 10 of the circuit board of the present invention is formed to correspond to the shape of the semiconductor device, as shown in Figs. 11 to 14, and includes a space portion 12 for accommodating the semiconductor device, and the space. It is formed around the part 12, and has the protrusion lead part 11 for pressurizing and heating the footprint of the lead of the said device.

본 발명의 전도성 필림을 이용한 회로기판의 실장 방법은, 도 15 내지 도 25에 도시된 바와 같이, 기판(3)의 반도체 디바이스 대응 동박패드(7')상에 전도성 필림(20)을 접착하고, 반도체 디바이스(8)의 리드의 풋프린트(8a)가 상기 전도성 필림(20)상에 위치하도록 상기 반도체 디바이스(8)를 기판상에 장착한 후, 상기 지그(10)을 이용하여 반도체 디바이스의 리드의 풋프린트(8a)를 가열가압하여 반도체 디바이스와 기판의 패턴을 접속하는 것이다.In the method of mounting a circuit board using the conductive film of the present invention, as shown in FIGS. 15 to 25, the conductive film 20 is adhered onto the copper foil pad 7 ′ corresponding to the semiconductor device of the substrate 3. After mounting the semiconductor device 8 on a substrate such that the footprint 8a of the lead of the semiconductor device 8 is located on the conductive film 20, the lead of the semiconductor device is used using the jig 10. The footprint 8a is heated and pressed to connect the pattern of the semiconductor device and the substrate.

한편, 이방성 도전성 필림(Anisotropic Conductive Film)(20)은, 도 26에 도시된 바와 같이, 수마이크로미터 내지 수십마이크로미터의 미소 도전입자(22)를 절연성 접착제(21)중에 분산시킨 접속재료로서, 이형성을 갖는 분리필림위에 도전재료를 포함한 접착제가 수십마이크로미터의 두께로 형성되어 있다. 도 27 및 28은, 상기 전도성 필림에 의한 전극의 접속방법을 설명하기 위한 것으로, 전도성 필릴(20)을 기판(23)의 접속전극(24)간에 넣고, 쌍방의 전극(24)을 위치맞춤한 후, 가열가압시키면, 접착제(21)는 용융되고, 쌍방의 기판(23)간의 접근에 따라 전극(24)간의 공간에 유동되어 간다. 기판(23)의 접근에 의해 도전입자(22)는 전극(24)에 의해 고정되고 압축편평하여 도통이 이루어진다. 한편, 인접하는 전극간은 도전입자(22)가 접착제(21)중에 분산된 상태로 있기 때문에 절연이 확보된다. 접착제(21)는 경화에 의해 기판(23)을 고정하고 장기신뢰성을 확보한다.Meanwhile, as shown in FIG. 26, the anisotropic conductive film 20 is a connection material in which micro conductive particles 22 of several micrometers to several tens of micrometers are dispersed in the insulating adhesive 21. An adhesive containing a conductive material is formed on the separation film having a release property to a thickness of several tens of micrometers. 27 and 28 illustrate a method of connecting the electrodes by the conductive film, in which the conductive peeler 20 is inserted between the connecting electrodes 24 of the substrate 23 and the electrodes 24 are aligned. Then, when heated and pressurized, the adhesive 21 melts and flows into the space between the electrodes 24 as the two substrates 23 approach each other. By the approach of the substrate 23, the conductive particles 22 are fixed by the electrode 24 and are compressed and flat to conduct. On the other hand, insulation is ensured between the adjacent electrodes because the conductive particles 22 are dispersed in the adhesive 21. The adhesive 21 fixes the board | substrate 23 by hardening, and ensures long-term reliability.

이하, 상기 지그를 이용한 본 발명의 회로기판의 실장방법을 설명하면, 도 15 내지 도 25에 도시된 바와 같이, 위에 파인피치의 반도체를 제외한 일반 각형 표준부품용 솔더페이스트를 기판(3)의 일반동박패드(7)상에 스퀴이즈등를 이용하여 솔더 페이스트(5)를 인쇄한 다음, 상면부품을 마운팅하고 리플로우 솔더링하여 패드(7)상에 인쇄된 솔더 페이스트(5)를 용융시키어 납땜한다. 이어서, 기판을 반전한 후 다시 상기 과정을 반복하여 하면부품을 실장하여, 회로기판의 양면에 부품을 실장 접속하고, 기판(3)의 반도체 디바이스 대응 동박패드(7')상에 전도성 필림(20)을 접착하고, 반도체 디바이스, 특히 파인피치의 반도체디방이스(8)의 리드의 풋프린트(8a)가 상기 전도성 필림(20)상에 위치하도록 상기 반도체 디바이스(20)를 기판상에 장착한 후, 상기 지그(10)의 돌출리드(11)를 상기 반도체 디바이스(8)의 풋프린트(8a)상에 위치시키고, 상기 지그의 리드(11)를 통해 반도체 디바이스의 리드의 풋프린트(8a)를 가열가압함으로서, 반도체 디바이스와 기판의 패턴을 접속한다.Hereinafter, the method for mounting the circuit board of the present invention using the jig will be described. As shown in FIGS. 15 to 25, the solder paste for the general square standard parts except for the fine pitch semiconductor is generally used for the substrate 3. The solder paste 5 is printed on the copper foil pad 7 using a squeeze or the like, and then the upper part is mounted and reflow soldered to melt and solder the solder paste 5 printed on the pad 7. Subsequently, after inverting the substrate and repeating the above process, the component is mounted, the component is mounted on both surfaces of the circuit board, and the conductive film 20 is mounted on the copper foil pad 7 'corresponding to the semiconductor device of the substrate 3. The semiconductor device 20 is mounted on a substrate such that the semiconductor device, in particular the footprint 8a of the lead of the semiconductor device 8 of the fine pitch, is positioned on the conductive film 20. Thereafter, the protruding lead 11 of the jig 10 is placed on the footprint 8a of the semiconductor device 8, and the footprint 8a of the lead of the semiconductor device is through the lead 11 of the jig. By heating and pressurizing, the pattern of a semiconductor device and a board | substrate is connected.

이상, 설명한 바와 같이, 본 발명에 따르면, 솔더페이스트를 사용하지 않고, 전도성 필림을 이용하여 반도체 디바이스의 리드를 기판의 패턴과 간단히 접합함으로서, 특히 파인피치의 반도체디바이스의 실장에 있어서, 솔더페이스트의 무너짐에 의한 숏트불량을 방지할 수 있고, 공정이 단순화되어 생산성을 향상시킬 수 있다.As described above, according to the present invention, the solder paste is simply bonded to the pattern of the substrate by using a conductive film without using a solder paste, and in particular, when mounting a semiconductor device of fine pitch, Short defects due to collapse can be prevented, and the process can be simplified to improve productivity.

Claims (2)

기판의 반도체 디바이스 대응 동박패드상에 전도성 필림을 접착하고, 반도체 디바이스의 리드의 풋프린트가 상기 전도성 필림상에 위치하도록 상기 반도체 디바이스를 기판상에 장착한 후, 반도체 디바이스의 리드의 풋프린트를 가열가압하여 반도체 디바이스와 기판의 패턴을 접속하는 것을 특징으로 하는 전도성 필림을 이용한 회로기판의 실장 방법.After attaching the conductive film on the copper foil pad corresponding to the semiconductor device of the substrate, and mounting the semiconductor device on the substrate so that the footprint of the lead of the semiconductor device is located on the conductive film, the footprint of the lead of the semiconductor device is heated. A method of mounting a circuit board using a conductive film, wherein the circuit board is pressed to connect a pattern between the semiconductor device and the substrate. 반도체 디바이스의 형상과 대응하도록 형성되고, 반도체 디바이스를 수납하기 위한 공간부와, 상기 공간부의 둘레에 형성되어, 상기 디바이스의 리드의 풋프린트를 가압가열하기 위한 돌출리드부를 구비한 것을 특징으로 하는 전도성 필림을 이용한 회로기판의 실장 지그.A conductive portion formed to correspond to the shape of the semiconductor device, and having a space portion for accommodating the semiconductor device, and a protruding lead portion formed around the space portion to pressurize and heat the footprint of the lead of the device. Mounting jig for circuit board using film.
KR1019970077611A 1997-12-30 1997-12-30 Method and jig for mounting components on printed circuit board using conductive film KR100275440B1 (en)

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KR100275440B1 KR100275440B1 (en) 2001-01-15

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Publication number Priority date Publication date Assignee Title
KR100813474B1 (en) * 2001-09-12 2008-03-13 삼성전자주식회사 Method for fabricating a pcb

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KR101181983B1 (en) 2010-08-04 2012-09-11 삼성전기주식회사 Jig for electroplating of printed circuit board and method of electro plating using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100813474B1 (en) * 2001-09-12 2008-03-13 삼성전자주식회사 Method for fabricating a pcb

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