KR20170062404A - 웨이퍼 가공체 및 웨이퍼 가공 방법 - Google Patents
웨이퍼 가공체 및 웨이퍼 가공 방법 Download PDFInfo
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Abstract
[해결 수단] 지지체 위에 가접착재층이 적층되며, 또한 상기 가접착재층 위에, 표면에 회로면을 갖고 이면을 가공해야 하는 웨이퍼가 적층된 웨이퍼 가공체이며, 상기 가접착재층은, 상기 웨이퍼의 표면에 적층된 열 가소성 수지층 (A)를 포함하는 제1 가접착층과, 해당 제1 가접착층에 적층된 열 경화성 수지층 (B)를 포함하는 제2 가접착층을 포함하고, 상기 열 가소성 수지층 (A)는 웨이퍼의 가공 후에 세정 용제 (D)에 대하여 가용의 것이며, 상기 열 경화성 수지층 (B)는 열 경화 후, 상기 세정 용제 (D)에 대하여 불용이지만 상기 세정 용제 (D)를 흡수하여 상기 세정 용제 (D)가 침투하는 것을 특징으로 하는 웨이퍼 가공체.
Description
도 2는 본 발명의 웨이퍼 가공체의 다른 예를 도시하는 단면도이다.
2…가접착재층
(A)…열 가소성 수지층(제1 가접착층)
(B)…열 경화성 수지층(제2 가접착층)
(C)… 분리층(제3 가접착층)
3…지지체
Claims (18)
- 지지체 위에 가접착재층이 적층되며, 또한 상기 가접착재층 위에, 표면에 회로면을 갖고 이면을 가공해야 하는 웨이퍼가 적층된 웨이퍼 가공체이며, 상기 가접착재층은, 상기 웨이퍼의 표면에 적층된 열 가소성 수지층 (A)를 포함하는 제1 가접착층과, 해당 제1 가접착층에 적층된 열 경화성 수지층 (B)를 포함하는 제2 가접착층을 포함하고, 상기 열 가소성 수지층 (A)는 웨이퍼의 가공 후에 세정 용제 (D)에 대하여 가용의 것이며, 상기 열 경화성 수지층 (B)는 열 경화 후, 상기 세정 용제 (D)에 대하여 불용이지만 상기 세정 용제 (D)를 흡수하여 상기 세정 용제 (D)가 침투하는 것을 특징으로 하는 웨이퍼 가공체.
- 제1항에 있어서, 상기 가접착재층은, 상기 지지체 위에 적층되며, 또한 상기 열 경화성 수지층 (B)에 적층된 분리층 (C)를 포함하는 제3 가접착층을 더 포함하고, 상기 분리층 (C)를 개재하여 상기 웨이퍼 가공체로부터 상기 지지체를 분리시켰을 때, 상기 분리층 (C)는 상기 열 경화성 수지층 (B) 위에는 잔존하지 않는 것을 특징으로 하는 웨이퍼 가공체.
- 제1항에 있어서, 상기 가접착재층은, 상기 지지체 위에 적층되며, 또한 상기 열 경화성 수지층 (B)에 적층된 분리층 (C)를 포함하는 제3 가접착층을 더 포함하고, 상기 분리층 (C)를 개재하여 상기 웨이퍼 가공체로부터 상기 지지체를 분리시켰을 때, 상기 분리층 (C)는 그의 일부 또는 전부가 상기 열 경화성 수지층 (B) 위에 잔존하며, 또한 상기 분리층 (C)는 상기 세정 용제 (D)에 대하여 가용의 것이거나, 또는 상기 세정 용제 (D)에 대하여 불용이지만 상기 세정 용제 (D)를 흡수하여 상기 세정 용제 (D)가 침투하는 것을 특징으로 하는 웨이퍼 가공체.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 열 가소성 수지층 (A)가 지방족 탄화수소계 수지 및 방향족 탄화수소계 수지 중 어느 1종 이상을 포함하는 것을 특징으로 하는 웨이퍼 가공체.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 열 경화성 수지층 (B)가 실리콘 수지, 에폭시 수지, 폴리이미드 수지, 아크릴 수지 및 페놀 수지 중 어느 1종 이상을 포함하는 것을 특징으로 하는 웨이퍼 가공체.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 상기 세정 용제 (D)가 지방족 탄화수소계 유기 용제, 방향족 탄화수소계 유기 용제, 케톤계 유기 용제, 알코올계 유기 용제, 에테르계 유기 용제, 에스테르계 유기 용제, 아민계 유기 용제, 암모늄계 유기 용제 및 유기산계 유기 용제로부터 선택되는 1종 이상의 유기 용제, 또는 해당 유기 용제와 염기계 수용액, 산계 수용액 및 물 중 어느 1종 이상과의 혼합액인 것을 특징으로 하는 웨이퍼 가공체.
- 제2항 또는 제3항에 있어서, 상기 분리층 (C)가 열 가소성 실리콘계 재료, 열 경화성 실리콘계 재료, 불소계 재료, 지방족 탄화수소계 재료 및 방향족 탄화수소계 재료 중 어느 1종 이상을 포함하는 것을 특징으로 하는 웨이퍼 가공체.
- 제2항 또는 제3항에 있어서, 상기 지지체와 상기 분리층 (C)의 접착력, 상기 열 경화성 수지층 (B)와 상기 분리층 (C)의 접착력 및 상기 분리층 (C)의 응집 파괴력 중 어느 1개 이상이, 상기 열 가소성 수지층 (A)와 상기 열 경화성 수지층 (B)의 접착력보다 낮은 것을 특징으로 하는 웨이퍼 가공체.
- 제2항 또는 제3항에 있어서, 상기 분리층 (C)가 X선, 자외광, 가시광, 적외광 중 어느 하나, 또는 특정 범위의 파장이 혼합된 광의 면 조사 또는 레이저 조사에 의해, 상기 지지체와 상기 분리층 (C)의 접착력, 상기 열 경화성 수지층 (B)와 상기 분리층 (C)의 접착력 및 상기 분리층 (C)의 응집 파괴력 중 어느 1개 이상이 저하되는 것을 특징으로 하는 웨이퍼 가공체.
- (a) 표면에 회로면을 갖고 이면을 가공해야 하는 웨이퍼의 표면을, 웨이퍼의 가공을 행한 후에도 세정 용제 (D)에 대하여 가용인 열 가소성 수지층 (A)를 포함하는 제1 가접착층과, 열 경화 후, 상기 세정 용제 (D)에 대하여 불용이지만 상기 세정 용제 (D)를 흡수하여 상기 세정 용제 (D)가 침투하는 것인 열 경화성 수지층 (B)를 포함하는 제2 가접착층을 포함하는 가접착재층을 개재하여 지지체에 접합하여, 웨이퍼 가공체를 제작하는 공정과,
(b) 상기 열 경화성 수지층 (B)를 열 경화시키는 공정과,
(c) 상기 웨이퍼의 이면을 연삭 또는 연마하는 공정과,
(d) 상기 웨이퍼의 이면에 가공을 실시하는 공정과,
(e) 상기 웨이퍼 가공체로부터 상기 지지체를 제거 또는 분리하는 공정과,
(f) 상기 지지체가 제거 또는 분리된 상기 웨이퍼 가공체를 상기 세정 용제 (D)로 처리함으로써, 상기 열 가소성 수지층 (A)의 용해 및 상기 열 경화성 수지층 (B)의 분리를 일괄 처리로 행하는 공정과,
(g) 상기 공정 (f)를 행한 후, 남은 상기 웨이퍼만을 취출하는 공정
을 포함하는 것을 특징으로 하는 웨이퍼 가공 방법. - 제10항에 있어서, 상기 가접착재층을, 상기 지지체 위에 적층되며, 또한 상기 열 경화성 수지층 (B)에 적층된 분리층 (C)를 포함하는 제3 가접착층을 더 포함하는 것으로 하고, 상기 분리층 (C)를 개재하여 상기 웨이퍼 가공체로부터 상기 지지체를 분리시켰을 때, 상기 분리층 (C)를 상기 열 경화성 수지층 (B) 위에는 잔존하지 않는 것으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
- 제10항에 있어서, 상기 가접착재층을, 상기 지지체 위에 적층되며, 또한 상기 열 경화성 수지층 (B)에 적층된 분리층 (C)를 포함하는 제3 가접착층을 더 포함하는 것으로 하고, 상기 분리층 (C)를 개재하여 상기 웨이퍼 가공체로부터 상기 지지체를 분리시켰을 때, 상기 분리층 (C)를 그의 일부 또는 전부가 상기 열 경화성 수지층 (B) 위에 잔존하는 것으로 하며, 또한 상기 분리층 (C)를 상기 세정 용제 (D)에 대하여 용해하거나, 또는 상기 세정 용제 (D)에 대하여 불용이지만 상기 세정 용제 (D)를 흡수하여 상기 세정 용제 (D)가 침투하는 것으로 하고,
상기 공정 (f)에 있어서, 상기 열 가소성 수지층 (A)의 용해, 상기 열 경화성 수지층 (B)의 분리 및 상기 분리층 (C)의 용해 또는 분리를 일괄 처리로 행하는 것을 특징으로 하는 웨이퍼 가공 방법. - 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 열 가소성 수지층 (A)를, 지방족 탄화수소계 수지 및 방향족 탄화수소계 수지 중 어느 1종 이상을 포함하는 것으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 열 경화성 수지층 (B)를, 실리콘 수지, 에폭시 수지, 폴리이미드 수지, 아크릴 수지 및 페놀 수지 중 어느 1종 이상을 포함하는 것으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 세정 용제 (D)를, 지방족 탄화수소계 유기 용제, 방향족 탄화수소계 유기 용제, 케톤계 유기 용제, 알코올계 유기 용제, 에테르계 유기 용제, 에스테르계 유기 용제, 아민계 유기 용제, 암모늄계 유기 용제 및 유기산계 유기 용제로부터 선택되는 1종 이상의 유기 용제, 또는 해당 유기 용제와 염기계 수용액, 산계 수용액 및 물 중 어느 1종 이상과의 혼합액으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
- 제11항 또는 제12항에 있어서, 상기 분리층 (C)를, 열 가소성 실리콘계 재료, 열 경화성 실리콘계 재료, 불소계 재료, 지방족 탄화수소계 재료 및 방향족 탄화수소계 재료 중 어느 1종 이상을 포함하는 것으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
- 제11항 또는 제12항에 있어서, 상기 지지체와 상기 분리층 (C)의 접착력, 상기 열 경화성 수지층 (B)와 상기 분리층 (C)의 접착력 및 상기 분리층 (C)의 응집 파괴력 중 어느 1개 이상을, 상기 열 가소성 수지층 (A)와 상기 열 경화성 수지층 (B)의 접착력보다 낮은 것으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
- 제11항 또는 제12항에 있어서, 상기 분리층 (C)를, X선, 자외광, 가시광, 적외광 중 어느 하나, 또는 특정 범위의 파장이 혼합된 광을 면 조사 또는 레이저 조사함으로써, 상기 지지체와 상기 분리층 (C)의 접착력, 상기 열 경화성 수지층 (B)와 상기 분리층 (C)의 접착력 및 상기 분리층 (C)의 응집 파괴력 중 어느 1개 이상이 저하되는 것으로 하는 것을 특징으로 하는 웨이퍼 가공 방법.
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US20190027391A1 (en) | 2019-01-24 |
US10991611B2 (en) | 2021-04-27 |
KR102728596B1 (ko) | 2024-11-12 |
TW201732869A (zh) | 2017-09-16 |
EP3174091A1 (en) | 2017-05-31 |
TWI703613B (zh) | 2020-09-01 |
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