KR102565249B1 - Ag 페이스트 조성물 및 이를 이용하여 제조된 접합 필름 - Google Patents
Ag 페이스트 조성물 및 이를 이용하여 제조된 접합 필름 Download PDFInfo
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- KR102565249B1 KR102565249B1 KR1020210073962A KR20210073962A KR102565249B1 KR 102565249 B1 KR102565249 B1 KR 102565249B1 KR 1020210073962 A KR1020210073962 A KR 1020210073962A KR 20210073962 A KR20210073962 A KR 20210073962A KR 102565249 B1 KR102565249 B1 KR 102565249B1
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- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
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Abstract
Description
도 2는 본 발명의 실시예에 의한 Ag 페이스트 조성물을 접합 필름으로 제조한 단면도이다.
도 3은 본 발명의 실시예에 의한 Ag 페이스트 조성물의 제조방법을 설명하기 위한 순서도이다.
도 4는 본 발명의 실시예로 건식 플라즈마 분말 합성하는 단계를 설명하기 위한 구성도이다.
도 5는 본 발명의 실시예로 분급 후 Ag 분말의 입도분포를 보여주는 SEM 사진이다.
도 6은 본 발명의 실시예로 비드 밀링 공정을 설명하기 위한 구성도이다.
도 7은 본 발명의 실시예로 비드 밀링 공정을 수행한 Ag 분말의 입형을 보여주는 SEM 사진이다.
도 8은 도 7의 Ag 분말의 열분석 결과를 나타낸 그래프이다.
도 9는 분급과 비드 밀링 공정을 통하여 Ag 분말의 비표면적과 입형 및 수축율을 제어한 예를 보여주는 SEM 사진이다.
도 10은 본 발명의 실시예에 의한 Ag 페이스트 조성물의 접합 강도를 타사 제품(비교예)과 비교한 그래프이다.
도 11은 도 10의 실시예와 비교예의 파단 표면을 촬영한 사진이다.
도 12는 본 발명의 실시예의 접합층과 비교예(타사 제품)의 수축율, 휨 발생, 미세조직을 비교한 사진이다.
도 13은 본 발명의 실시예와 비교예의 수축율을 비교한 사진이다.
도 14는 본 발명의 실시예로 대상물을 기판에 접합한 접합층의 소결 후 수축된 모습을 설명하기 위한 도면이다.
도 15는 본 발명의 Ag 페이스트 조성물을 SiC 전력 반도체 칩과 DBC 기판의 사이에 배치하고 무가압 소결한 다음 소결된 접합층의 조직을 촬영한 사진이다.
| 구분 | Ag 페이스트 조성물의 Ag 분말 물성치 |
비고 | |
| BET(㎡/g) | 1.3~1.8 | 구형 입자로 환산시 325~420㎛ 수준 | |
| 입경 D50(㎛) | 장축-길이 | 0.80~1.30㎛ | |
| 단축-두께 | 0.04~0.08㎛ | 표면적 환산시 7~14 | |
| C 함량(ppm) | 1500~2000 | 유기물 0.01~0.2% | |
| O 함량 | 200~400 | ||
| 밀도(g/cc) | 10.2 이상 | ||
| 구분 | 실시예 Ag 페이스트 조성물 |
비교예 구형 나노입자 100nm |
|||
| 소결조건 |
압력(Mpa) | 15 | Pressure-less | 15 | Pressure-less |
| 온도(℃), 시간(Time) |
250/5 | 270/60 | 250/5 | 270/60 | |
| 소결 후 수축율(%) | 두께 | 43.8 | 11.48 | 62.5 | 20.54 |
| 폭 | 0.64 | 5.68 | 4.71 | 23.83 | |
| 구분 | 유기물 바인더 타는 개시온도(℃) | 감량 종료(℃) | Ag 반응온도(℃) |
| 실시예 | 160 | 313 | 307 |
| 비교예 | 165 | 315 | 319 |
| 소결 조건 | 무가압 소결 |
가압 소결 | |||
| 270℃/30min | 270℃/60min | 240℃/5min/ 15MPa |
250℃/5min/ 10MPa |
250℃/5min/ 15MPa |
|
| 실시예 (Ag 페이스트 조성물) |
152.92 | 151.01 | 265.82 | 236.20 | 288.08 |
| 비교예 (구형 나노입자 100nm) |
76.80 | 109.19 | - | - | 280.96 |
12,13: 금속층 20: 반도체 칩
30: Ag 페이스트 조성물 30': (소결된) 접합층
30": (소결전) 접합층 40: 접합 필름
41: 베이스 필름 41: 점착층
Claims (15)
- 제1 대상물에 코팅하고, 상기 제1 대상물을 제2 대상물측으로 가압 소결하여 상기 제1 대상물과 상기 제2 대상물의 사이에 소결된 접합층을 형성하는 Ag 페이스트 조성물이며,
Ag 분말 90~99 중량%; 및
유기물 바인더 1~10 중량%;
를 포함하고,
상기 Ag 분말은,
구형 나노입자와 플레이크상의 중간 입형이고,
비표면적(BET)이 1.3~1.8㎡/g 범위이며,
그 입형의 장축의 길이가 0.80㎛~1.3㎛ 범위이고,
그 입형의 단축의 길이가 0.04㎛~0.08㎛ 범위인,
Ag 페이스트 조성물. - 삭제
- 삭제
- 삭제
- 제1항에 있어서,
상기 Ag 페이스트 조성물은
전체 유기물 함량이 2 중량% 이하이고,
가압 소결 후 전체 유기물의 함량이 0.1 중량% 이하인 Ag 페이스트 조성물. - 제1항에 있어서,
상기 Ag 페이스트 조성물은 가압 소결시 소결 온도가 200℃~300℃ 범위인 Ag 페이스트 조성물. - 베이스 필름;
상기 베이스 필름 상에 형성된 점착층; 및
상기 점착층 상에 형성되고 Ag 페이스트 조성물로 이루어진 접합층;
을 포함하고,
Ag 분말 90~99 중량%; 및
유기물 바인더 1~10 중량%;
를 포함하고,
상기 Ag 분말은,
구형 나노입자와 플레이크상의 중간 입형이고,
비표면적(BET)이 1.3~1.8㎡/g 범위이며,
그 입형의 장축의 길이가 0.80㎛~1.3㎛ 범위이며,
그 입형의 단축의 길이가 0.04㎛~0.08㎛ 범위인,
접합 필름. - 제7항에 있어서,
상기 베이스 필름은 PET 필름, PI 필름, PU 필름 중 하나로 이루어지는 접합 필름. - 제7항에 있어서,
상기 점착층은 OCA(Optically Clear Adhesive) 또는 OCR(Optically Clear Resin)로 이루어지는 접합 필름. - 삭제
- 삭제
- 삭제
- 삭제
- 제7항에 있어서,
상기 Ag 페이스트 조성물은
전체 유기물 함량이 2 중량% 이하이고,
가압 소결 후 전체 유기물의 함량이 0.1 중량% 이하인 접합 필름. - 제7항에 있어서,
상기 접합층을 제1 대상물에 전사하고, 상기 제1 대상물을 제2 대상물측으로 가압 소결하여 상기 제1 대상물과 상기 제2 대상물의 사이에 소결된 접합층을 형성하며,
가압 소결시 소결 온도가 200℃~300℃ 범위인 접합 필름.
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| JP2003147317A (ja) * | 2001-11-16 | 2003-05-21 | Hitachi Chem Co Ltd | 接着用樹脂ペースト組成物及びこれを用いた半導体装置 |
| JP2007254845A (ja) * | 2006-03-24 | 2007-10-04 | Mitsui Mining & Smelting Co Ltd | フレーク銀粉及びその製造方法 |
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| JP3991218B2 (ja) * | 2002-12-20 | 2007-10-17 | 信越化学工業株式会社 | 導電性接着剤及びその製造方法 |
| JP4212035B2 (ja) * | 2003-06-05 | 2009-01-21 | 株式会社ノリタケカンパニーリミテド | 銀粉末を主体とする導体ペースト及びその製造方法 |
| KR100783102B1 (ko) | 2005-01-14 | 2007-12-07 | 삼성전자주식회사 | 솔더 기둥을 이용한 반도체 패키지의 기판 접합 구조 및방법 |
| JP2010236039A (ja) * | 2009-03-31 | 2010-10-21 | Dowa Electronics Materials Co Ltd | フレーク状銀粉及びその製造方法、並びに導電性ペースト |
| US20130192671A1 (en) * | 2011-08-11 | 2013-08-01 | E I Du Pont De Nemours And Company | Conductive metal paste and use thereof |
| KR101357592B1 (ko) * | 2011-09-28 | 2014-02-04 | 엘지이노텍 주식회사 | 터치윈도우 |
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| EP3608947A4 (en) * | 2017-03-29 | 2020-12-16 | Nitto Denko Corporation | THERMAL BONDING SHEET AND DICE CUTTING STRIP ATTACHED TO A THERMAL BONDING SHEET |
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| JP2003147317A (ja) * | 2001-11-16 | 2003-05-21 | Hitachi Chem Co Ltd | 接着用樹脂ペースト組成物及びこれを用いた半導体装置 |
| JP2007254845A (ja) * | 2006-03-24 | 2007-10-04 | Mitsui Mining & Smelting Co Ltd | フレーク銀粉及びその製造方法 |
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