UPDATED. 2024-04-16 11:15 (화)
Premium PCBs depend on Japan for ultra-thin copper laminate, ink
Premium PCBs depend on Japan for ultra-thin copper laminate, ink
  • Gijong Lee
  • 승인 2019.07.25 10:19
  • 댓글 0
이 기사를 공유합니다

Semiconductor, SLP substrates all use Mitsui’s copper foil
Ink comes from Japan’s Daiyo and Tamura

South Korean manufacturers of high-end printed circuit board (PCB) appear to be heavily dependent on Japanese imports, indicating this sector also could be hard hit should the Tokyo government widen its scope of export restrictions against the country.

Industry data showed on July 22 that components like ultra-thin copper foil and ink needed for making premium boards such as semiconductor package substrates and substrate-like-PCBs are mostly imported from Japan via companies such as Mitsui.

PCBs are a key part of most electronic devices, and ultra-thin copper foil is used as a laminate.

"Semiconductor package substrates such as FC-BGA(Flip Chip Ball Grid Array) and FC-CSP(Flip Chip Chip Scale Package) use 2㎛ ultra-thin copper foil, while SLP uses 3㎛ copper foil,” said an industry source knowledgeable on the matter. "Most PCB companies use products from Mitsui.”

He added that there are no local alternatives, as existing companies can’t manufacture copper foil that are 3㎛ or thinner. There are some Taiwanese suppliers that can produce this thickness, but the quality isn’t quite up to par.

One significant variable is that the copper foil from Mitsui is produced in Malaysia, and not Japan, consequently begging the question on whether it can be considered as being exported from Japan and could face a ban by the Tokyo government.

Another major component for manufacturing the substrates is ink, which is used to prevent oxidation. Japan’s Taiyo Ink and Tamura are the two largest suppliers in the world.

Some South Korean conglomerates have tried to develop the ink a few years back, but failed. Since then, nobody else has attempted to enter the market.

And because the Korea factories mix the ink based on materials imported from Japan, supplies could become scarce if these materials are banned from entering Korea.

Samsung Electro-mechanics, LG Innotek, Daeduk Electronics, Simmtech, Korea Circuit and Isu Exaboard are some of the South Korean firms producing semiconductor package substrates or SLP substrates that consider the ultra-thin copper foil and ink as key material.

“The impact may be limited, but the sector would still face some type of backlash,” said another market watcher.

The Elec is South Korea’s No.1 tech news platform.

삭제한 댓글은 다시 복구할 수 없습니다.
그래도 삭제하시겠습니까?
댓글 0
계정을 선택하시면 로그인·계정인증을 통해
댓글을 남기실 수 있습니다.

  • 515, Nonhyeon-ro, Gangnam-gu, Seoul, Republic of Korea 4F, Ahsung Bldg.
  • 대표전화 : 82-2-2658-4707
  • 팩스 : 82-2-2659-4707
  • 청소년보호책임자 : Stan LEE
  • 법인명 : The Elec Inc.
  • 제호 : THE ELEC, Korea Electronics Industry Media
  • 등록번호 : 서울, 아05435
  • 등록일 : 2018-10-15
  • 발행일 : 2018-10-15
  • 발행인 : JY HAN
  • 편집인 : JY HAN
  • THE ELEC, Korea Electronics Industry Media Prohibiting unauthorized duplication,publishing,modification and distribution the material on this Site for any purpose.
  • Copyright © 2024 THE ELEC, Korea Electronics Industry Media. All rights reserved. mail to powerusr@thelec.kr