KR102391661B1 - 반도체 칩의 제조 방법, 표면 보호 테이프 - Google Patents
반도체 칩의 제조 방법, 표면 보호 테이프 Download PDFInfo
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- KR102391661B1 KR102391661B1 KR1020197027213A KR20197027213A KR102391661B1 KR 102391661 B1 KR102391661 B1 KR 102391661B1 KR 1020197027213 A KR1020197027213 A KR 1020197027213A KR 20197027213 A KR20197027213 A KR 20197027213A KR 102391661 B1 KR102391661 B1 KR 102391661B1
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Abstract
Description
도 1b는 반도체 웨이퍼(1)로의 표면 보호 테이프(3)의 첩합까지의 공정에서, 표면 보호 테이프(3)를 반도체 웨이퍼(1)에 첩합하는 모습을 나타내는 개략 단면도이다.
도 1c는 반도체 웨이퍼(1)로의 표면 보호 테이프(3)의 첩합까지의 공정에서, 표면 보호 테이프(3)를 첩합한 반도체 웨이퍼(1)를 나타내는 개략 단면도이다.
도 2a는 반도체 웨이퍼(1)의 박막화와 고정까지의 공정에서, 반도체 웨이퍼(1)의 박막화 처리를 나타내는 개략 단면도이다.
도 2b는 반도체 웨이퍼(1)의 박막화와 고정까지의 공정에서, 반도체 웨이퍼(1)를 정전 척(9)에 배치하는 모습을 나타내는 개략 단면도이다.
도 2c는 반도체 웨이퍼(1)의 박막화와 고정까지의 공정에서, 반도체 웨이퍼(1)가 정전 척(9)에 고정된 상태를 나타내는 개략 단면도이다.
도 3a는 마스크 형성까지의 공정에서, 마스크 테이프(11)를 첩합한 상태를 나타내는 개략 단면도이다.
도 3b는 마스크 형성까지의 공정에서, 레이저(L)로 스트리트에 해당하는 부위의 마스크 테이프(11)를 절제하는 공정을 나타내는 개략 단면도이다.
도 4a는 플라즈마 다이싱 공정에서, 플라즈마 다이싱을 실시하는 모습을 나타내는 개략 단면도이다.
도 4b는 플라즈마 다이싱 공정에서, 칩(7)으로 개편화된 상태를 나타내는 개략 단면도이다.
도 5a는 애싱 공정에서, 애싱을 실시하는 모습을 나타내는 개략 단면도이다.
도 5b는 애싱 공정에서, 마스크 테이프(11)가 제거된 상태를 나타내는 개략 단면도이다.
도 6a는 칩(7)을 칩 고정 테이프(4)에 고정시키는 공정에서, 칩(7)을 칩 고정 테이프(4)에 첩합하는 모습을 나타내는 개략 단면도이다.
도 6b는 칩(7)을 칩 고정 테이프(4)에 고정시키는 공정에서, 칩(7)이 칩 고정 테이프(4)에 고정된 상태를 나타내는 개략 단면도이다.
도 6c는 칩(7)을 칩 고정 테이프(4)에 고정시키는 공정에서, 표면 보호 테이프(3)를 벗기는 모습을 나타내는 개략 단면도이다.
도 7a는 칩(7)을 픽업할 때까지의 공정에서, 표면 보호 테이프(3)가 제거된 상태를 나타내는 개략 단면도이다.
도 7b는 칩(7)을 픽업할 때까지의 공정에서, 칩(7)을 픽업하는 모습을 나타내는 개략 단면도이다.
2 : 패턴면
3 : 표면 보호 테이프
3a : 기재 필름
3b : 점착제층
4 : 칩 고정 테이프
5 : 스트리트
7 : 칩
9 : 정전 척
11 : 마스크 테이프
12 : 웨이퍼 연삭 장치
13 : 링 프레임
15 : SF6 플라즈마
17 : 핀
18 : 콜릿
19 : O2 플라즈마
S : 표면
B : 이면
L : 레이저
Claims (10)
- 반도체 칩의 제조 방법으로서,
반도체 웨이퍼의 패턴면 측에, 적어도 기재 필름과 점착제층을 갖는 표면 보호 테이프가 첩합된 상태에서 상기 반도체 웨이퍼의 이면을 연삭하는 공정 a와,
상기 표면 보호 테이프가 첩합된 상태에서 연삭된 상기 반도체 웨이퍼의 이면에 마스크재층을 형성하는 공정 b와,
상기 반도체 웨이퍼의 스트리트에 해당하는 부분을 레이저로 절단하여, 상기 반도체 웨이퍼의 상기 마스크재층 측으로부터 스트리트를 개구하는 공정 c와,
SF6 플라즈마에 의해, 상기 반도체 웨이퍼를 상기 스트리트에서 분단하여 반도체 칩으로 개편화하는 플라즈마 다이싱 공정 d와,
O2 플라즈마에 의해 상기 마스크재층을 제거하는 애싱 공정 e와,
애싱된 상기 반도체 웨이퍼의 이면에 칩 고정 테이프를 첩합하여, 링 프레임으로 지지 고정시키는 공정 f와,
상기 표면 보호 테이프를 박리하는 공정 g,
를 구비하고,
상기 마스크재층을 형성하는 공정 b는 상기 반도체 웨이퍼의 이면에 마스크 테이프를 첩부하여 마스크재층을 형성하는 공정이고,
상기 마스크 테이프는 굽힘 탄성률이 200MPa 이상이고, 폴리올레핀계 수지로 이루어지고,
상기 기재 필름에서 상기 점착제층이 형성되어 있지 않은 쪽의 표면 저항율이 1013Ω/sq 미만이고,
상기 점착제층은 방사선 경화형 점착제 및 감압형 점착제가 적층된 구조를 가지는 것을 특징으로 하는 반도체 칩의 제조 방법. - 제1항에 있어서,
상기 점착제층 중 방사선 경화형 점착제는 측쇄에 에틸렌성 불포화 결합을 갖는 (메타)아크릴 공중합체를 포함하고, 상기 (메타)아크릴 공중합체 및 그 가교물의 함유율이 90% 이상인 것을 특징으로 하는, 반도체 칩의 제조 방법. - 제1항에 있어서,
상기 점착제층 중 방사선 경화형 점착제는 (메타)아크릴 공중합체 100질량부에 대하여 이소시아네이트기를 갖는 경화제 또는 에폭시기를 갖는 경화제 0.5∼5질량부를 사용하여 적어도 일부를 가교시키고 있는 것을 특징으로 하는, 반도체 칩의 제조 방법. - 제1항에 있어서,
상기 기재 필름의 굽힘 탄성율이 5.0×108Pa 이상 1.0×1010Pa 이하인 것을 특징으로 하는, 반도체 칩의 제조 방법. - 제1항에 있어서,
상기 기재 필름을 형성하고 있는 수지의 융점이 90℃ 이상인 것을 특징으로 하는, 반도체 칩의 제조 방법. - 제1항에 있어서,
상기 기재 필름에서 상기 점착제층이 형성되어 있지 않은 쪽의 표면 거칠기(Ra)가 0.1㎛ 이상 2.0㎛ 이하인 것을 특징으로 하는, 반도체 칩의 제조 방법. - 삭제
- 제1항에 있어서,
상기 점착제층 중 방사선 경화형 점착제의 저장 탄성률이 25℃에서 5.0×104Pa 이상 2.0×105Pa 이하인 것을 특징으로 하는, 반도체 칩의 제조 방법.
- 삭제
- 삭제
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