KR20020006462A - 범프가 부착된 배선회로기판 및 그 제조방법 - Google Patents
범프가 부착된 배선회로기판 및 그 제조방법 Download PDFInfo
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Abstract
Description
Claims (22)
- 배선회로의 편면에 커버코팅층이 형성되고, 타면에는 절연층이 형성되고, 상기 배선회로와 도통하고 있는 범프가 상기 절연층으로부터 돌출하도록 형성되어 있는 범프가 부착된 배선회로기판으로서, 상기 배선회로와 상기 범프가 하나의 금속박으로 일체적으로 형성되어 있고, 또한 상기 배선회로의 범프형성면과 상기 절연층 사이에 상기 금속박과 상이한 금속으로 이루어진 금속박막층이 형성되어 있는 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 1 항에 있어서, 상기 절연층이 폴리이미드전구체층을 이미드화한 폴리이미드막이며, 상기 금속박막층이 상기 금속박보다도 상기 폴리이미드전구체층에 대해 높은 접착력을 나타내는 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 1 항 또는 제 2 항에 있어서, 상기 금속박이 구리박이며, 상기 금속박막층이 Ni, Zn, Sn 또는 Ni-Co 합금의 박막인 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 3 항에 있어서, 상기 금속박막층의 층두께가 0.01 내지 4 ㎛ 인 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 3 항에 있어서, 상기 금속박막층이 Zn 또는 Sn 의 박막인 경우에, 상기 금속박막층의 막두께가 0.1 내지 0.5 ㎛ 인 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 3 항에 있어서, 상기 금속박막층이 Ni-Co 합금의 박막인 경우에, 상기 금속박막층의 막두께가 0.1 내지 4 ㎛ 인 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 3 항에 있어서, 상기 금속박막층이 Ni 의 박막인 경우에, 상기 금속박막층의 막두께가 0.01 내지 1 ㎛ 인 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 제 1 항 내지 제 7 항 중 어느 한 항에 있어서, 상기 커버코팅층이 상기 커버코팅측으로부터 상기 배선회로로 억세스가능하게 하기 위한 접속구를 갖는 것을 특징으로 하는 범프가 부착된 배선회로기판.
- 배선회로상에 범프가 형성된 범프가 부착된 배선회로기판의 제조방법에 있어서,(a) 상기 배선회로의 두께와 상기 배선회로에 형성되는 상기 범프의 높이를 합산한 두께를 갖는 금속박의 범프형성면에 보호필름을 적층하고, 상기 금속박의배선회로형성면에 배선회로형성용 에칭마스크를 형성하는 공정;(b) 상기 배선회로형성용 에칭마스크측으로부터 상기 금속박을 하프에칭하여 소기 두께의 상기 배선회로를 형성하는 공정;(c) 상기 배선회로형성용 에칭마스크를 제거한 후, 상기 배선회로에 커버코팅층을 형성하는 공정;(d) 상기 금속박의 상기 범프형성면에 형성된 상기 보호필름을 제거한 후, 상기 범프형성면에 범프형성용 에칭마스크를 형성하는 공정;(e) 상기 범프형성용 에칭마스크측으로부터 상기 금속박을 하프에칭하여, 소기 높이의 범프를 형성하는 공정;(f) 상기 범프형성용 에칭마스크를 제거한 후, 상기 금속박과 상이한 금속으로 이루어진 금속박막층을 형성하는 공정;(g) 상기 금속박막층상에 상기 범프를 메우도록 폴리이미드전구체층을 형성하는 공정; 및(h) 폴리이미드전구체층을 에칭백하고 이미드화하여, 소기 두께의 절연층을 형성하는 공정을 포함하여 이루어지는 것을 특징으로 하는 제조방법.
- 제 9 항에 있어서, 상기 공정 (f) 으로 형성되는 상기 금속박막층이 상기 금속박보다도 폴리이미드전구체층에 대해 높은 접착력을 나타내는 것을 특징으로 하는 제조방법.
- 제 9 항 또는 제 10 항에 있어서, 상기 금속박이 구리박이며, 상기 금속박막층이 Ni, Zn, Sn 또는 Ni-Co 합금의 박막인 것을 특징으로 하는 제조방법.
- 제 11 항에 있어서, 상기 금속박막층의 층두께가 0.01 내지 4 ㎛ 인 것을 특징으로 하는 제조방법.
- 제 11 항에 있어서, 상기 금속박막층이 Zn 또는 Sn 의 박막인 경우에, 상기 금속박막층의 막두께가 0.1 내지 0.5 ㎛ 인 것을 특징으로 하는 제조방법.
- 제 11 항에 있어서, 상기 금속박막층이 Ni-Co 합금의 박막인 경우에, 상기 금속박막층의 막두께가 0.1 내지 4 ㎛ 인 것을 특징으로 하는 제조방법.
- 제 11 항에 있어서, 상기 금속박막층이 Ni 의 박막인 경우에, 상기 금속박막층의 막두께가 0.01 내지 1 ㎛ 인 것을 특징으로 하는 제조방법.
- 배선회로상에 범프가 형성된 범프가 부착된 배선회로기판의 제조방법에 있어서,(aa) 상기 배선회로의 두께와 상기 배선회로에 형성되는 상기 범프의 높이를 합산한 두께를 갖는 금속박의 배선회로형성면에 보호필름을 적층하고, 상기 금속박의 범프형성면에 범프형성용 에칭마스크를 형성하는 공정;(bb) 상기 범프형성용 에칭마스크측으로부터 상기 금속박을 하프에칭하여 소기 높이의 범프를 형성하는 공정;(cc) 상기 범프형성용 에칭마스크를 제거한 후, 상기 금속박과 상이한 금속으로 이루어진 금속박막층을 형성하는 공정;(dd) 상기 금속박막층상에 상기 범프를 메우도록 폴리이미드전구체층을 형성하는 공정;(ee) 상기 폴리이미드전구체층을 에칭하고 이미드화하여, 소기 두께의 절연층을 형성하는 공정;(ff) 상기 금속박의 상기 배선회로형성면에 형성된 상기 보호필름을 제거한 후, 상기 배선회로형성면에 배선회로형성용 에칭마스크를 형성하는 공정;(gg) 상기 배선회로형성용 에칭마스크측으로부터 상기 금속박을 하프에칭하여 소기 두께의 배선회로를 형성하는 공정; 및(hh) 상기 배선회로형성용 에칭마스크를 제거한 후, 상기 배선회로에 커버코팅층을 형성하는 공정을 포함하여 이루어지는 것을 특징으로 하는 제조방법.
- 제 16 항에 있어서, 상기 공정 (cc) 으로 형성되는 상기 금속박막층이 상기 금속박보다도 상기 폴리이미드전구체층에 대해 높은 접착력을 나타내는 것을 특징으로 하는 제조방법.
- 제 16 항 또는 제 17 항에 있어서, 상기 금속박이 구리박이며, 상기 금속박막층이 Ni, Zn, Sn 또는 Ni-Co 합금의 박막인 것을 특징으로 하는 제조방법.
- 제 18 항에 있어서, 상기 금속박막층의 층두께가 0.01 내지 4 ㎛ 인 것을 특징으로 하는 제조방법.
- 제 18 항에 있어서, 상기 금속박막층이 Zn 또는 Sn 의 박막인 경우에, 상기 금속박막층의 층두께가 0.1 내지 0.5 ㎛ 인 것을 특징으로 하는 제조방법.
- 제 18 항에 있어서, 상기 금속박막층이 Ni-Co 합금의 박막인 경우에, 상기 금속박막층의 막두께가 0.1 내지 4 ㎛ 인 것을 특징으로 하는 제조방법.
- 제 18 항에 있어서, 상기 금속박막층이 Ni 의 박막인 경우에, 상기 금속박막층의 막두께가 0.01 내지 1 ㎛ 인 것을 특징으로 하는 제조방법.
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US7910446B2 (en) | 2007-07-16 | 2011-03-22 | Applied Materials, Inc. | Integrated scheme for forming inter-poly dielectrics for non-volatile memory devices |
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JP2002026489A (ja) | 2002-01-25 |
US7520053B2 (en) | 2009-04-21 |
JP3760731B2 (ja) | 2006-03-29 |
KR100771030B1 (ko) | 2007-10-29 |
US7020961B2 (en) | 2006-04-04 |
CN1335740A (zh) | 2002-02-13 |
US20030034173A1 (en) | 2003-02-20 |
US6518510B2 (en) | 2003-02-11 |
US20060070978A1 (en) | 2006-04-06 |
TW511431B (en) | 2002-11-21 |
US20020005292A1 (en) | 2002-01-17 |
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