KR20200066611A - 실장 구조체의 제조 방법 및 이것에 이용되는 적층 시트 - Google Patents
실장 구조체의 제조 방법 및 이것에 이용되는 적층 시트 Download PDFInfo
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Abstract
Description
도 2는, 본 발명의 1실시형태에 관계된 적층 시트를 모식적으로 도시하는 단면도이다.
도 3은, 봉지 공정 중의 실장 부재를 모식적으로 도시하는 단면도이다. 다만, 도 3a는 적층 시트가 경화하기 전의 상태를 도시하고 있고, 도 3b는 적층 시트가 경화한 후의 상태를 도시하고 있다.
도 4는, 본 발명의 1실시형태에 관계된 제조 방법을, 실장 부재 혹은 실장 구조체의 단면에 의해 모식적으로 도시하는 설명도이다.
1: 제1 회로 부재
2: 제2 회로 부재
3: 범프
4: 봉지재(적층 시트의 경화물)
41: 제1의 경화 열 전도층
42: 제2의 경화 열 전도층
4P: 적층 시트
41P: 제1의 열 전도층
42P: 제2의 열 전도층
20: 실장 칩
Claims (11)
- 제1 회로 부재와, 상기 제1 회로 부재에 탑재되는 복수의 제2 회로 부재를 구비함과 동시에, 상기 제1 회로 부재와 상기 제2 회로 부재 사이에 공간이 형성된 실장 부재를 준비하는 공정과,
제1의 열 전도층과 제2의 열 전도층을 구비하고, 상기 제1의 열 전도층이, 적어도 한쪽의 가장 외측(最外)에 배치되어 있는 적층 시트를 준비하는 공정과,
상기 제1의 열 전도층이 상기 제2 회로 부재와 대향하도록, 상기 적층 시트를 상기 실장 부재에 배치하는 배치 공정과,
상기 적층 시트를 상기 제1 회로 부재에 대해서 압압(押壓)함과 동시에, 상기 적층 시트를 가열해서, 상기 공간을 유지하면서 상기 제2 회로 부재를 봉지(封止)하고, 상기 적층 시트를 경화시키는 봉지 공정을 구비하고,
경화 후의 상기 제1의 열 전도층의 상온에 있어서의 두께 방향의 열 전도율이, 주면 방향의 열 전도율 이상이고,
경화 후의 상기 제2의 열 전도층의 상온에 있어서의 주면 방향의 열 전도율이, 두께 방향의 열 전도율보다도 큰, 실장 구조체의 제조 방법. - 제 1 항에 있어서,
경화 후의 상기 제1의 열 전도층의 상온에 있어서의 두께 방향의 열 전도율이, 1W/m·K 이상인, 실장 구조체의 제조 방법. - 제 1 항 또는 제 2 항에 있어서,
경화 후의 상기 제2의 열 전도층의 상온에 있어서의 주면 방향의 열 전도율이, 1W/m·K 이상인, 실장 구조체의 제조 방법. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 제1의 열 전도층은, 열 경화성 수지를 포함하는 제1 수지 조성물에 의해 구성되고,
상기 제2 회로 부재가 봉지될 때의 온도 t에 있어서,
상기 제1 수지 조성물의 손실 탄젠트(正接) tanδ1이, 1 이하인, 실장 구조체의 제조 방법. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 제2의 열 전도층은, 열 경화성 수지를 포함하는 제2 수지 조성물에 의해 구성되고,
상기 제2 회로 부재가 봉지될 때의 온도 t에 있어서,
상기 제2 수지 조성물의 손실 탄젠트 tanδ2가, 0.3보다도 큰, 실장 구조체의 제조 방법. - 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,
상기 실장 부재가, 제1 회로 부재에 탑재되고, 발열할 수 있는 상기 제2 회로 부재와는 다른 제3 회로 부재를 더 구비하고,
상기 배치 공정에 있어서, 상기 제1의 열 전도층을, 상기 제2 회로 부재 및 상기 제3 회로 부재와 대향하도록 배치하고,
상기 봉지 공정에 있어서, 상기 제2 회로 부재 및 상기 제3 회로 부재가 봉지되는, 실장 구조체의 제조 방법. - 제1 회로 부재와, 상기 제1 회로 부재에 탑재되는 복수의 제2 회로 부재를 구비함과 동시에, 상기 제1 회로 부재와 상기 제2 회로 부재 사이에 공간이 형성된 실장 부재를 봉지하기 위해서 이용되는 적층 시트로서,
제1의 열 전도층과 제2의 열 전도층을 구비하고,
상기 제1의 열 전도층이, 적어도 한쪽의 가장 외측에 배치되어 있고,
경화 후의 상기 제1의 열 전도층의 상온에 있어서의 두께 방향의 열 전도율이, 주면 방향의 열 전도율 이상이고,
경화 후의 상기 제2의 열 전도층의 상온에 있어서의 주면 방향의 열 전도율이, 두께 방향의 열 전도율보다도 큰, 적층 시트. - 제 7 항에 있어서,
경화 후의 상기 제1의 열 전도층의 상온에 있어서의 두께 방향의 열 전도율이, 1W/m·K 이상인, 적층 시트. - 제 7 항 또는 제 8 항에 있어서,
경화 후의 상기 제2의 열 전도층의 상온에 있어서의 주면 방향의 열 전도율이, 1W/m·K 이상인, 적층 시트. - 제 7 항 내지 제 9 항 중 어느 한 항에 있어서,
상기 제1의 열 전도층은, 열 경화성 수지를 포함하는 제1 수지 조성물에 의해 구성되고,
상기 제2 회로 부재가 봉지될 때의 온도 t에 있어서,
상기 제1 수지 조성물의 손실 탄젠트 tanδ1이, 1 이하인, 적층 시트. - 제 7 항 내지 제 10 항 중 어느 한 항에 있어서,
상기 제2의 열 전도층은, 열 경화성 수지를 포함하는 제2 수지 조성물에 의해 구성되고,
상기 제2 회로 부재가 봉지될 때의 온도 t에 있어서,
상기 제2 수지 조성물의 손실 탄젠트 tanδ2가, 0.3보다 큰, 적층 시트.
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