UPDATED. 2024-04-11 10:05 (목)
PI and SK supplies CoF material for Galaxy A smartphones
PI and SK supplies CoF material for Galaxy A smartphones
  • Gijong Lee
  • 승인 2021.04.07 17:33
  • 댓글 0
이 기사를 공유합니다

Image: SK Nexilis
Image: SK Nexilis

PI Advanced Materials and SK Nexilis are supplying materials used for chip on film (CoF) in Samsung’s Galaxy A smartphones, TheElec has learned.

PI Advanced Materials is supplying the polyimide film for the CoF, while SK Nexilis is providing flexible copper clad laminate (FCCL).

It marks the first time that the pair is supplying the key materials for CoF.

Samsung has previously procured them from Japanese companies.

CoF is a film that connects the display panel with the flexible printed circuit board. It is where the display driver IC is installed. 

FCCL is made by sputtering the copper on the polyimide film. Circuits are drawn on the FCCL where the display driver is attached.

Samsung is using CoF for higher tier Galaxy A models.

The actual CoF is assembled by LG InnoTek.

These South Korean companies has been developing CoF and related materials since Japan’s export ban against South Korean in 2019. They have been working to develop the materials and gain customer approval for a year since then.

LG InnoTek is planning to supply tens of millions of CoF for use in Galaxy A52 and A72 this year. Samsung has previously used CoF of Japan’s Toray Industries and Stemco, a joint venture between Toray (70% stake) and Samsung Electro-Mechanics (30% stake).

Besides CoF, display driver ICs can be installed on display panels through chip on plastic (CoP) or chip on glass (CoG). Display driver IC are installed in different places and the way the display panel substrate and FPCB are connected differ for each method.

Samsung uses CoP for its flagship smartphones, where the display driver IC are embedded on the polyimide substrate of the OLED panel. Lower tier Galaxy A models and Galaxy M series use CoG.

Image: PI Advanced Materials
Image: PI Advanced Materials


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