JP2007067332A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2007067332A JP2007067332A JP2005254852A JP2005254852A JP2007067332A JP 2007067332 A JP2007067332 A JP 2007067332A JP 2005254852 A JP2005254852 A JP 2005254852A JP 2005254852 A JP2005254852 A JP 2005254852A JP 2007067332 A JP2007067332 A JP 2007067332A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 105
- 239000011229 interlayer Substances 0.000 claims abstract description 87
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 38
- 239000010410 layer Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 14
- 239000002356 single layer Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 18
- 238000012986 modification Methods 0.000 description 44
- 230000004048 modification Effects 0.000 description 44
- 239000000523 sample Substances 0.000 description 25
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Abstract
【解決手段】半導体装置はパッド1と、パッド1の下に形成された、配線が埋め込まれた第1の層間絶縁膜3及び第2の層間絶縁膜4とを備えている。第1の層間絶縁膜3及び第2の層間絶縁膜4には、複数の第1の配線12及び複数の第2の配線13がそれぞれ埋め込まれている。各第1の配線12は、互いに間隔をおいてパッド1の下側に形成された平面方形状の導電膜である。パッド1の下側において、各第1の配線12は直線状に形成されており、屈曲及び分岐を有していない。また、パッド1の下側において、第1の層間絶縁膜3には、第1の配線12同士を電気的に接続する配線は設けられていない。
【選択図】図1
Description
本発明の第1の実施形態について図面を参照して説明する。図1は第1の実施形態に係る半導体装置のパッドメタル部分の平面構成を示しており、図2は図1のII−II線における断面構造を示している。図1及び図2はパッドの下に2層の配線が形成されている例を示しており、拡散層及びトランジスタ構造の記載は省略している。
以下に、第1の実施形態の第1変形例について図面を参照して説明する。図8は本変形例に係る半導体装置のパッドメタル部分の平面構成を示しており、図9は図8のIX−IX線における断面図を示している。図8及び図9において図1及び図2と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第1の実施形態の第2変形例について図面を参照して説明する。図10は本変形例に係る半導体装置のパッドメタル部分の平面構成を示しており、図11は図10のXI−XI線における断面図を示している。図10及び図11において図1及び図2と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第1の実施形態の第3変形例について図面を参照して説明する。図13は本変形例に係る半導体装置の平面構成を示している。図13において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第1の実施形態の第4変形例について図面を参照して説明する。図14は本変形例に係る半導体装置の平面構成を示している。図14において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第1の実施形態の第5変形例について図面を参照して説明する。図15は本変形例に係る半導体装置の平面構成を示している。図15において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第1の実施形態の第6変形例について図面を参照して説明する。図16は本変形例に係る半導体装置の平面構成を示している。図16において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、第1の実施形態の第7変形例について図面を参照して説明する。図17は本変形例に係る半導体装置のパッドメタル部分の平面構成を示し、図18は図17のXVIII−XVIII線における断面構成を示している。図17及び図18において図1及び図2と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、本発明の第2の実施形態について図面を参照して説明する。図19は第2の実施形態に係る半導体装置の平面構成を示している。図19において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
以下に、本発明の第3の実施形態について図面を参照して説明する。図20は第2の実施形態に係る半導体装置の平面構成を示している。図20において図1と同一の構成要素には同一の符号を附すことにより説明を省略する。
1a 側部
1A 第1のパッドメタル
1B 第2のパッドメタル
3 第1の層間絶縁膜
4 第2の層間絶縁膜
5 ビアコンタクト
6 ビアコンタクト
8 第3の層間絶縁膜
11 半導体基板
12 第1の配線
12a 側部
12A 第1の配線
12B 第1の配線
13 第2の配線
14 第3の配線
21 半導体チップ
22 超音波の振動方向
31 入出力回路領域
32 ロジック回路領域
Claims (24)
- 半導体基板と
前記半導体基板の上に形成された第1の層間絶縁膜と、
前記第1の層間絶縁膜の上に形成されたパッドと、
前記第1の層間絶縁膜中の前記パッドの下側部分に、それぞれが互いに間隔をおいて形成された複数の第1の配線とを備え、
前記各第1の配線は、前記パッドの下側において、平面方形状に形成されていることを特徴とする半導体装置。 - 前記各第1の配線は、その2組の対辺のうちの少なくとも1組の対辺の長さが、前記パッドの幅よりも短いことを特徴とする請求項1に記載の半導体装置。
- 前記パッドの下側において前記複数の第1の配線が占める面積は、前記パッドの面積の30%以上であることを特徴とする請求項1又は2に記載の半導体装置。
- 前記複数の第1の配線は、前記パッドの下側においてそれぞれが直線状に延びていることを特徴とする請求項1から3のいずれか1項に記載の半導体装置。
- 前記各第1の配線の延びる方向は、すべて同一の方向であることを特徴とする請求項4に記載の半導体装置。
- 前記パッドは平面長方形状であり、
前記パッドの下側において前記第1の配線が延びる方向は、前記パッドの長辺と直交する方向であることを特徴とする請求項5に記載の半導体装置。 - 前記パッドは平面長方形状であり、
前記パッドの下側において前記第1の配線が延びる方向は、前記パッドの長辺と平行な方向であることを特徴とする請求項5に記載の半導体装置。 - 前記複数の第1の配線のうちの一部は、前記パッドの下側において、第1の方向に延び、前記複数の第1の配線のうちの残りは、前記パッドの下側において、前記第1の方向と直交する第2の方向に延びることを特徴とする請求項1から7のいずれか1項に記載の半導体装置。
- 前記パッドは平面長方形状であり、
前記第1の方向は、前記パッドの短辺と直交する方向であり、
前記第2の方向は、前記パッドの短辺と平行な方向であることを請求項8に記載の半導体装置。 - 前記各第1の配線は、それぞれ島状に形成されていることを特徴とする請求項1から4のいずれか1項に記載の半導体装置。
- 前記各第1の配線は、角部が面取りされた平面形状を有していることを特徴とする請求項1から10のいずれか1項に記載の半導体装置。
- 前記第1の絶縁膜を貫通する少なくとも1つの第1のビアプラグをさらに備え、
前記第1のビアプラグは、前記パッドと前記複数の第1の配線のうちのいずれか1つとを電気的に接続することを特徴とする請求項1から11のいずれか1項に記載の半導体装置。 - 前記第1のビアプラグは、前記パッドの中央部と接するように形成されていることを特徴とする請求項12に記載の半導体装置。
- 前記第1のビアプラグは、複数であり、それぞれが前記複数の第1の配線のうちの前記パッドの中央部の下側を通る第1の配線に沿って形成されていることを特徴とする請求項12又は13に記載の半導体装置。
- 前記第1のビアプラグは、複数であり、それぞれが前記パッドの外縁部において前記パッドの一の辺に沿って形成されていることを特徴とする請求項12に記載の半導体装置。
- 前記複数の第1のビアプラグは、それぞれが前記複数の第1の配線のうちの前記一の辺の側において、前記一の辺に沿って形成された第1の配線と接していることを特徴とする請求項15に記載の半導体装置。
- 前記各第1の配線は、該各第1の配線の側部と前記パッドの側部とが互いにずれて形成されていることを特徴とする請求項1から16のいずれか1項に記載の半導体装置。
- 前記基板と前記第1の層間絶縁膜との間に形成された第2の層間絶縁膜と、
前記第2の層間絶縁膜中に形成された複数の第2の配線と、
前記第2の層間絶縁膜における前記パッドの下側部分に形成され、前記複数の第1の配線のいずれか1つと前記複数の第2の配線のいずれか1つとを接続する第2のビアプラグとをさらに備えていることを特徴とする請求項1から17のいずれか1項に記載の半導体装置。 - 前記複数の第1の配線のうちの一部は、前記パッドと前記第2の配線との間を電気的にシールドするシールド信号線であることを特徴とする請求項18に記載の半導体装置。
- 前記シールド信号線は接地信号線又は電源信号線であることを特徴とする請求項19に記載の半導体装置。
- 前記第1の層間絶縁膜と前記パッドとの間に形成された第3の層間絶縁膜をさらに備え、
前記第3の層間絶縁膜の前記パッドの下側を除く領域には、第3の配線が形成されていることを特徴とする請求項1から20のいずれか1項に記載の半導体装置。 - 前記パッドは、金属からなる単層膜であることを特徴とする請求項1から21のいずれか1項に記載の半導体装置。
- 前記パッドは、複数層の金属膜からなることを特徴とする請求項1から21のいずれか1項に記載の半導体装置。
- 前記複数の第1の配線のうちの少なくとも2本は、前記第1の層間絶縁膜とは異なる層間絶縁膜に形成された接続配線を介在させて、互いに電気的に接続されていることを特徴とする請求項1から23のいずれか1項に記載の半導体装置。
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