KR102311487B1 - 반도체 패키지의 제조 방법 - Google Patents
반도체 패키지의 제조 방법 Download PDFInfo
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- KR102311487B1 KR102311487B1 KR1020180039326A KR20180039326A KR102311487B1 KR 102311487 B1 KR102311487 B1 KR 102311487B1 KR 1020180039326 A KR1020180039326 A KR 1020180039326A KR 20180039326 A KR20180039326 A KR 20180039326A KR 102311487 B1 KR102311487 B1 KR 102311487B1
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Abstract
(해결 수단) 배선 기판 (11) 상의 반도체 칩 (12) 을 봉지제로 봉지한 반도체 패키지 (10) 의 제조 방법으로서, 반도체 패키지 기판 (15) 의 수지층 (13) 측으로부터 V 블레이드 (28) 로 분할 예정 라인을 따라 V 홈 (29) 을 형성하고, V 홈을 따라 배선 기판을 분할하여 개개의 반도체 패키지로 분할하여 패키지 측면 (23) 에 경사면 (25) 과 연직면 (26) 을 형성하고, 패키지 상면 (22) 및 패키지 측면에 실드층 (16) 을 형성하였다. 이 때, 패키지 간격의 연직면측에서 애스펙트비를 조정함으로써, 패키지 상면 및 패키지 경사면에 적당한 실드층을 형성하여 실드 효과를 확보하고, 패키지의 연직면 및 패키지 사이의 홈 바닥에 실드층을 얇게 형성하여 버의 발생을 억제하도록 하였다.
Description
도 2 는 비교예의 반도체 패키지의 제조 방법을 나타내는 모식적 단면도이다.
도 3 은 제 1 실시형태의 반도체 패키지의 제조 방법을 나타내는 모식적 단면도이다.
도 4 는 제 1 실시형태의 반도체 패키지의 제조 방법을 나타내는 모식적 단면도이다.
도 5 는 제 2 실시형태의 반도체 패키지의 제조 방법을 나타내는 모식적 단면도이다.
도 6 은 제 2 실시형태의 반도체 패키지의 제조 방법을 나타내는 모식적 단면도이다.
도 7 은 반도체 패키지의 측면 형상의 바리에이션의 일례를 나타내는 모식적 단면도이다.
도 8 은 시험체의 모식적 단면도이다.
도 9 는 시험체의 스텝 커버리지와 애스펙트비의 관계를 나타내는 도면이다.
도 10 은 반도체 패키지의 변형예를 나타내는 모식적 단면도이다.
도 11 은 반도체 패키지 기판에 대한 홈 형성의 변형예를 나타내는 모식적 단면도이다.
도 12 는 반도체 패키지의 변형예를 나타내는 모식적 단면도이다.
도 13 은 절삭 블레이드의 변형예를 나타내는 단면도이다.
11 : 배선 기판
12 : 반도체 칩
13 : 수지층 (봉지제)
15 : 반도체 패키지 기판
16 : 실드층
22 : 패키지 상면 (봉지제 상면)
23 : 패키지 측면 (측면)
24 : 봉지제
25 : 경사면 (측면의 경사)
28 : V 블레이드 (가공 공구)
29 : V 홈 (홈)
35 : 점착 테이프
36 : 절삭 블레이드
37 : 사각형 홈
38 : 사각형 홈의 홈 바닥
41 : 보호 테이프
42 : 얕은 홈 (홈)
55 : 단차
Claims (3)
- 교차하는 복수의 분할 예정 라인에 의해 구획된 배선 기판 상의 복수 영역에 복수의 반도체 칩이 마운트되고 봉지제에 의해 봉지된 반도체 패키지 기판을 상기 분할 예정 라인을 따라 분할된 반도체 패키지를 제조하는 반도체 패키지의 제조 방법으로서,
상기 반도체 패키지 기판의 상기 배선 기판측을, 점착층을 갖는 지지 부재 상에 첩착하는 첩착 공정과,
상기 첩착 공정을 실시한 후에, 상기 봉지제측으로부터 상기 분할 예정 라인을 따라 가공 공구로 적어도 상기 봉지제의 도중까지 절입하고, 상기 봉지제의 적어도 상면이 제 1 폭인 홈을 형성하는 홈 형성 공정과,
상기 홈 형성 공정을 실시한 후에, 상기 봉지제측으로부터 상기 제 1 폭보다 가는 제 2 폭의 절삭 블레이드를 사용하여 상기 홈을 따라 상기 지지 부재의 도중까지 절입하고, 인접하는 상기 반도체 패키지 사이가 소정 간격 X ㎜ 이간되도록 분할하는 분할 공정과,
상기 분할 공정을 실시한 후에, 상기 봉지제측 상방으로부터 도전성 재료로, 상기 반도체 패키지의 측면 및 상기 봉지제 상면에 실드층을 형성하는 실드층 형성 공정과,
상기 실드층 형성 공정을 실시한 후에, 상기 실드층이 형성된 반도체 패키지를 픽업하는 픽업 공정을 구비하고,
상기 제 1 폭과 상기 제 2 폭은, 분할 후의 각 반도체 패키지의 상기 봉지제 상면으로부터 하면을 향하는 도중에, 상기 봉지제 상면보다 외형 사이즈가 커지도록 각 측면에 경사 또는 단차가 발생하는 폭으로 설정되고,
상기 반도체 패키지의 상기 경사 또는 상기 단차의 하단으로부터 상기 지지 부재에 절입한 홈 바닥까지의 측면 길이를 Y ㎜ 로 했을 때에, 상기 실드층 형성시에 상기 실드층이 상기 측면에는 형성되지만 상기 반도체 패키지 사이의 상기 홈 바닥에 형성되는 실드층의 두께가 상기 경사 또는 상기 단차에 형성되는 실드층의 두께보다 얇게 되는 애스펙트비 Y/X 가 되도록, 상기 제 1 폭, 상기 제 2 폭, 상기 측면 길이 Y ㎜ 및 실드층 형성 조건이 설정되는 것을 특징으로 하는 반도체 패키지의 제조 방법. - 교차하는 복수의 분할 예정 라인에 의해 구획된 배선 기판 상의 복수 영역에 복수의 반도체 칩이 마운트되고 봉지제에 의해 봉지된 반도체 패키지 기판을 상기 분할 예정 라인을 따라 분할된 반도체 패키지를 제조하는 반도체 패키지의 제조 방법으로서,
상기 반도체 패키지 기판을 상기 분할 예정 라인을 따라 분할함과 함께, 각 반도체 패키지의 상기 봉지제 상면으로부터 하면을 향하는 도중에, 상기 봉지제 상면보다 외형 사이즈가 커지도록 각 측면에 경사 또는 단차를 형성하는 분할 공정과,
상기 분할된 개개의 반도체 패키지의 인접하는 상기 반도체 패키지끼리를 소정 간격 X ㎜ 이간시켜 정렬하고, 상기 배선 기판측을 유지 지그에 유지 또는 지지 부재에 첩착하는 반도체 패키지 정렬 공정과,
상기 봉지제측 상방으로부터 도전성 재료로, 상기 반도체 패키지의 측면 및 상기 봉지제 상면에 실드층을 형성하는 실드층 형성 공정과,
상기 실드층 형성 공정을 실시한 후에, 상기 실드층이 형성된 반도체 패키지를 픽업하는 픽업 공정을 구비하고,
상기 반도체 패키지의 상기 경사 또는 상기 단차의 하단으로부터 상기 유지 지그 또는 상기 지지 부재까지의 측면 길이를 Y ㎜ 로 했을 때에, 상기 실드층 형성시에 상기 실드층이 상기 측면에는 형성되지만 상기 반도체 패키지 사이 바닥면에 형성되는 실드층의 두께가 상기 경사 또는 상기 단차에 형성되는 실드층의 두께보다 얇게 되는 애스펙트비 Y/X 가 되도록, 상기 경사 또는 상기 단차, 상기 측면 길이 Y ㎜, 상기 소정 간격 X ㎜ 및 실드층 형성 조건이 설정되는 것을 특징으로 하는 반도체 패키지의 제조 방법. - 제 2 항에 있어서,
상기 반도체 패키지 정렬 공정에서는, 상기 유지 지그 또는 상기 지지 부재의 유지면을 격자상의 홈으로 구획한 각 영역에 상기 반도체 패키지가 재치되고, 인접하는 상기 반도체 패키지끼리가 상기 소정 간격 X ㎜ 이간되어 정렬되고,
상기 홈의 홈 폭이 상기 반도체 패키지끼리의 상기 소정 간격 X ㎜ 보다 크게 형성되어 있는 것을 특징으로 하는 반도체 패키지의 제조 방법.
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