KR102335066B1 - 반도체 다이 어태치 분야를 위한 금속 로딩량이 많은 소결 페이스트 - Google Patents
반도체 다이 어태치 분야를 위한 금속 로딩량이 많은 소결 페이스트 Download PDFInfo
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- KR102335066B1 KR102335066B1 KR1020177034460A KR20177034460A KR102335066B1 KR 102335066 B1 KR102335066 B1 KR 102335066B1 KR 1020177034460 A KR1020177034460 A KR 1020177034460A KR 20177034460 A KR20177034460 A KR 20177034460A KR 102335066 B1 KR102335066 B1 KR 102335066B1
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Brazing of electronic components
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Abstract
Description
도 2는 제조된 그 상태와 T1에서의 열 처리 후의 본 발명 조성물의 변화를 도시한다.
Claims (15)
- 열 반응 후 금속 부피가 60%를 초과하는 반도체 다이 어태치 조성물로서,
a. i. Sn, Zn, Ga, In 및 이들의 조합으로 이루어진 군으로부터 선택되는 1종 이상의 저융점(LMP) 금속 Y를 포함하는 무연 LMP 금속 합금 입자 조성물 30∼55 중량%(wt%); 및
ii. Cu, Ag, Pd, Au, Al, Ni, Be, Rh, Co, Fe, Mo, W, Mn, Pt 및 이들의 조합으로 이루어진 군으로부터 선택되는 1종 이상의 금속 원소 M을 포함하는 고융점(HMP) 입자 조성물로서, 상기 M은 100℃ 내지 300℃ 범위의 공정 온도 T1에서 상기 1종 이상의 LMP 금속 Y와 반응성인 고융점(HMP) 입자 조성물 25∼50 wt%,
여기서, 조성물 중의 Y의 wt%에 대한 M의 wt%의 비는 1.0 이상임,
iii. M 또는 Y와 반응할 수 있는 금속에 의해 합금화, 유사 합금화, 또는 코팅된, Be, Rh, Co, Fe, Mo, W 또는 Mn을 포함하는 금속 분말 첨가제 A 20∼45 wt%
를 포함하는, 금속 입자의 혼합물 80∼99 wt%와,
b. i. 비반응성 용매로 이루어진 군으로부터 선택되는 휘발분, 및
ii. 카복실산, 페놀 및 이들의 조합으로 이루어진 군으로부터 선택되는 T1에서 비활성이 되는 비휘발분 50 wt% 이하
를 포함하고, 1∼20 wt%의 양으로 존재하는 플럭싱 비이클
을 포함하는 반도체 다이 어태치 조성물. - 제1항에 있어서, 상기 금속 원소 M은 T1에서 1종 이상의 LMP 금속 Y와 상호확산을 겪어, 이러한 상호확산으로부터 형성된 생성물이 T1보다 높은 융점을 갖는 것인 조성물.
- 제1항에 있어서, 상기 LMP 입자 조성물이 미량의 검출 가능한 수준보다 많은 비스무트를 포함하지 않는 것인 조성물.
- 제1항에 있어서, 상기 1종 이상의 M이 Cu, Ag, Pd, Au, Al, Ni, Pt 및 이들의 조합으로 이루어진 군으로부터 선택되는 것인 조성물.
- 제1항에 있어서, 상기 1종 이상의 Y가 Sn, In 및 이들의 조합으로 이루어진 군으로부터 선택되는 것인 조성물.
- 제1항에 있어서, T1이 150℃ 내지 280℃ 범위인 조성물.
- 제1항에 있어서, 상기 금속 분말 첨가제 A의 최대 입자 크기가 50 마이크론인 조성물.
- 하나 이상의 주 표면 상에 금속화를 갖는 반도체 다이와 하나 이상의 주 표면 상에 금속화를 갖는 패키지 부재 사이에 배치된 제1항의 조성물을 포함하는 구조체.
- 금속화를 갖는 반도체 다이로부터 금속화를 갖는 패키지 부재로 야금적으로 상호접속된 연속 통로가 형성되도록 피크 온도 T1에서 제8항의 구조체를 처리하는 단계를 포함하는 방법.
- 제9항에 있어서, T1이 150℃ 내지 280℃인 방법.
- 제9항에 있어서, 피크 온도 T1에서의 지속 시간이 15 내지 75분인 방법.
- 제9항에 있어서, 피크 온도 T1에 도달하기 위한 승온 속도가 분당 2.67 내지 4.4℃인 방법.
- 제9항에 있어서, T1으로부터 실온으로 복귀하기 위한 냉각 속도가 분당 2.17 내지 3.25℃인 방법.
- 삭제
- 삭제
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