KR20210039744A - 두꺼운 금속층을 갖는 반도체 소자들 - Google Patents
두꺼운 금속층을 갖는 반도체 소자들 Download PDFInfo
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- KR20210039744A KR20210039744A KR1020190122357A KR20190122357A KR20210039744A KR 20210039744 A KR20210039744 A KR 20210039744A KR 1020190122357 A KR1020190122357 A KR 1020190122357A KR 20190122357 A KR20190122357 A KR 20190122357A KR 20210039744 A KR20210039744 A KR 20210039744A
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Abstract
Description
도 2 내지 도 4는 도 1의 부분들을 보여주는 확대도들이다.
도 5 내지 도 8은 본 개시에 따른 실시예로서, 반도체 소자들을 설명하기 위한 단면도들이다.
도 9 및 도 10은 도 5의 일부분을 보여주는 확대도들이다.
도 11 내지 도 13은 본 개시에 따른 실시예로서, 반도체 소자들을 설명하기 위한 단면도들이다.
도 14 및 도 15는 본 개시에 따른 실시예로서, 반도체 소자들을 설명하기 위한 단면도들이다.
도 16은 도 14 및 도 15의 일부분을 보여주는 확대도이다.
도 17 내지 도 21은 본 개시에 따른 실시예로서, 반도체 소자들의 형성 방법들을 설명하기 위한 단면도들이다.
24: 게이트 유전층 25: 게이트 전극
26: 게이트 캐핑층 27: 소스/드레인 영역
28: 비트 플러그 29: 비트 라인
32: 매립 콘택 플러그 33: 랜딩 패드
35: 제1 전극 36: 캐패시터 유전층
37: 제2 전극 30: 하부 절연층
38: 콘택 스페이서 39: 관통 전극
40: 층간 절연층 45: 중간 배선
47: 중간 플러그 50: 상부 절연층
61: 제1 상부 플러그 65: 제1 상부 배선
71: 제2 상부 플러그 75: 제2 상부 배선
55W: 개구부 85: 필라 구조체
87: 솔더 89: 제1 범프
91: 기판 절연층 93: 돌출 전극
95: 접착층 96: 봉지재
489: 제2 범프 589: 제3 범프
689: 제4 범프
MC: 메모리 셀 PC: 인쇄 회로 기판
PC2: 패키지 기판 IP: 중계 기판
CP: 마이크로프로세서(Microprocessor)
BD: 버퍼 칩 MD1~MD4: 메모리 칩
Claims (20)
- 기판 상의 층간 절연층;
상기 층간 절연층 내의 다수의 중간 배선;
상기 층간 절연층 내에 배치되고 상기 다수의 중간 배선 사이의 다수의 중간 플러그;
상기 층간 절연층 상의 상부 절연층;
상기 상부 절연층 내에 배치되고 상기 다수의 중간 배선 중 제1 두께를 갖는 하나에 접속된 제1 상부 플러그;
상기 상부 절연층 내에 배치되고 상기 제1 상부 플러그 상에 상기 제1 두께보다 두꺼운 제2 두께를 갖는 제1 상부 배선;
상기 상부 절연층 내에 배치되고 상기 제1 상부 배선 상의 제2 상부 플러그;
상기 상부 절연층 내에 배치되고 상기 제2 상부 플러그 상에 상기 제1 두께보다 두꺼운 제3 두께를 갖는 제2 상부 배선; 및
상기 상부 절연층을 관통하여 상기 제2 상부 배선을 노출하는 개구부를 포함하되,
상기 제3 두께는 상기 제1 두께의 2배 내지 100배 이고,
상기 제2 상부 배선은 상기 제2 상부 플러그와 다른 물질을 포함하는 반도체 소자. - 제1 항에 있어서,
상기 제3 두께는 상기 제2 두께와 동일하거나 상기 제2 두께보다 두꺼운 반도체 소자. - 제1 항에 있어서,
상기 제3 두께는 2㎛ 내지 10㎛ 인 반도체 소자. - 제1 항에 있어서,
상기 다수의 중간 플러그의 각각은 제1 높이를 가지고, 상기 제1 상부 플러그는 상기 제1 높이보다 큰 제2 높이를 가지며, 상기 제2 상부 플러그는 상기 제1 높이보다 큰 제3 높이를 갖는 반도체 소자. - 제4 항에 있어서,
상기 제3 높이는 상기 제2 높이와 동일하거나 상기 제2 높이보다 큰 반도체 소자. - 제1 항에 있어서,
상기 제1 상부 배선 및 상기 제2 상부 배선의 각각은 상기 다수의 중간 배선과 다른 물질 층을 포함하는 반도체 소자. - 제6 항에 있어서,
상기 다수의 중간 배선은 Cu층을 포함하고,
상기 제2 상부 배선은 Al층을 포함하는 반도체 소자. - 제6 항에 있어서,
상기 제1 상부 배선은 Al층을 포함하는 반도체 소자. - 제6 항에 있어서,
상기 제2 상부 플러그는 W층을 포함하는 반도체 소자. - 제1 항에 있어서,
상기 상부 절연층은
제1 상부 절연층;
상기 제1 상부 절연층 상의 상기 제1 상부 절연층과 다른 물질을 갖는 제2 상부 절연층; 및
상기 제2 상부 절연층 상의 상기 제2 상부 절연층과 다른 물질을 갖는 제3 상부 절연층을 포함하되,
상기 제1 상부 절연층, 상기 제2 상부 절연층, 및 상기 제3 상부 절연층은 상기 제1 상부 배선 및 상기 제2 상부 배선 사이에 배치되고,
상기 제2 상부 플러그는 상기 제1 상부 절연층, 상기 제2 상부 절연층, 및 상기 제3 상부 절연층을 관통하여 상기 제1 상부 배선 및 상기 제2 상부 배선에 접촉된 반도체 소자. - 제10 항에 있어서,
상기 제1 상부 절연층은 산화물 층을 포함하고, 상기 제2 상부 절연층은 질화물 층을 포함하고, 상기 제3 상부 절연층은 산화물 층을 포함하는 반도체 소자. - 제1 항에 있어서,
상기 기판 내에 연장되고 상기 다수의 중간 배선에 접속된 관통 전극을 더 포함하는 반도체 소자. - 제12 항에 있어서,
상기 관통 전극의 직경은 1㎛ 내지 20㎛ 인 반도체 소자. - 제1 항에 있어서,
상기 기판 및 상기 층간 절연층 사이의 하부 절연층; 및
상기 하부 절연층 내의 메모리 셀을 더 포함하는 반도체 소자. - 제14 항에 있어서,
상기 메모리 셀은 DRAM 셀, SRAM 셀, 플래시 메모리 셀, MRAM 셀, PRAM 셀, FeRAM 셀, RRAM 셀, 또는 이들의 조합을 포함하는 반도체 소자. - 인쇄 회로 기판 상에 차례로 적층된 다수의 반도체 칩을 포함하되,
상기 다수의 반도체 칩 중 적어도 하나는
기판 상의 하부 절연층;
상기 하부 절연층 내의 메모리 셀;
상기 하부 절연층 상의 층간 절연층;
상기 층간 절연층 내의 다수의 중간 배선;
상기 층간 절연층 내에 배치되고 상기 다수의 중간 배선 사이의 다수의 중간 플러그;
상기 층간 절연층 상의 상부 절연층;
상기 상부 절연층 내에 배치되고 상기 다수의 중간 배선 중 제1 두께를 갖는 하나에 접속된 제1 상부 플러그;
상기 상부 절연층 내에 배치되고 상기 제1 상부 플러그 상에 상기 제1 두께보다 두꺼운 제2 두께를 갖는 제1 상부 배선;
상기 상부 절연층 내에 배치되고 상기 제1 상부 배선 상의 제2 상부 플러그;
상기 상부 절연층 내에 배치되고 상기 제2 상부 플러그 상에 상기 제1 두께보다 두꺼운 제3 두께를 갖는 제2 상부 배선;
상기 상부 절연층 상에 배치되고 상기 상부 절연층 내로 연장되어 상기 제2 상부 배선에 접촉된 범프(bump); 및
상기 기판 내에 연장되고 상기 다수의 중간 배선에 접속된 관통 전극을 포함하되,
상기 제3 두께는 상기 제1 두께의 2배 내지 100배 이고,
상기 제2 상부 배선은 상기 제2 상부 플러그와 다른 물질을 포함하는 반도체 소자. - 제16 항에 있어서,
상기 범프(bump)의 직경은 10㎛ 내지 50㎛ 인 반도체 소자. - 제16 항에 있어서,
상기 제3 두께는 상기 제2 두께와 동일하거나 상기 제2 두께보다 두꺼운 반도체 소자. - 제16 항에 있어서,
상기 다수의 중간 플러그의 각각은 제1 높이를 가지고, 상기 제1 상부 플러그는 상기 제1 높이보다 큰 제2 높이를 가지며, 상기 제2 상부 플러그는 상기 제1 높이보다 큰 제3 높이를 갖는 반도체 소자. - 중계 기판;
상기 중계 기판 상의 마이크로프로세서;
상기 중계 기판 상의 버퍼 칩; 및
상기 버퍼 칩 상에 차례로 적층된 다수의 반도체 칩을 포함하되,
상기 다수의 반도체 칩 중 적어도 하나는
기판 상의 하부 절연층;
상기 하부 절연층 내의 메모리 셀;
상기 하부 절연층 상의 층간 절연층;
상기 층간 절연층 내의 다수의 중간 배선;
상기 층간 절연층 내에 배치되고 상기 다수의 중간 배선 사이의 다수의 중간 플러그;
상기 층간 절연층 상의 상부 절연층;
상기 상부 절연층 내에 배치되고 상기 다수의 중간 배선 중 제1 두께를 갖는 하나에 접속된 제1 상부 플러그;
상기 상부 절연층 내에 배치되고 상기 제1 상부 플러그 상에 상기 제1 두께보다 두꺼운 제2 두께를 갖는 제1 상부 배선;
상기 상부 절연층 내에 배치되고 상기 제1 상부 배선 상의 제2 상부 플러그;
상기 상부 절연층 내에 배치되고 상기 제2 상부 플러그 상에 상기 제1 두께보다 두꺼운 제3 두께를 갖는 제2 상부 배선;
상기 상부 절연층 상에 배치되고 상기 상부 절연층 내로 연장되어 상기 제2 상부 배선에 접촉된 범프(bump); 및
상기 기판 내에 연장되고 상기 다수의 중간 배선에 접속된 관통 전극을 포함하되,
상기 제3 두께는 상기 제1 두께의 2배 내지 100배 이고,
상기 제2 상부 배선은 상기 제2 상부 플러그와 다른 물질을 포함하는 반도체 소자.
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