JP2020150037A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP2020150037A JP2020150037A JP2019044106A JP2019044106A JP2020150037A JP 2020150037 A JP2020150037 A JP 2020150037A JP 2019044106 A JP2019044106 A JP 2019044106A JP 2019044106 A JP2019044106 A JP 2019044106A JP 2020150037 A JP2020150037 A JP 2020150037A
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- pad
- plug
- semiconductor device
- wafer
- insulating film
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 235000012431 wafers Nutrition 0.000 claims description 43
- 239000002184 metal Substances 0.000 description 63
- 229910052751 metal Inorganic materials 0.000 description 63
- 239000010410 layer Substances 0.000 description 51
- 239000011229 interlayer Substances 0.000 description 27
- 238000002161 passivation Methods 0.000 description 8
- 238000001020 plasma etching Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction 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
- 238000001039 wet etching Methods 0.000 description 1
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Abstract
Description
図1は、第1実施形態に係る半導体装置の構造を示す断面図である。図1の半導体装置は、アレイチップ1と回路チップ2が貼り合わされた3次元メモリである。
図11は、第2実施形態に係る半導体装置の構造を示す断面図である。
11:メモリセルアレイ、12:絶縁膜、13:層間絶縁膜、14:絶縁膜、
15:絶縁膜、16:層間絶縁膜、17:基板、18:基板、
21:階段構造部、22:コンタクトプラグ、23:ワード配線層、
24:コンタクトプラグ、25:ソース側選択ゲート配線層、
26:コンタクトプラグ、27:ドレイン側選択ゲート配線層、
28:プラグ、29:コンタクトプラグ、30:ソース配線層、
31:トランジスタ、32:ゲート電極、33:プラグ、
34:配線層、35:配線層、36:ビアプラグ、37:金属パッド、
41:金属パッド、42:ビアプラグ、43:配線層、
44:ビアプラグ、45:金属パッド、46:パッシベーション膜、
51:絶縁層、52:ブロック絶縁膜、53:電荷蓄積層、
54:トンネル絶縁膜、55:チャネル半導体層、56:コア絶縁膜
Claims (11)
- 第1基板と、
前記第1基板上に設けられた制御回路と、
前記制御回路の上方に設けられ、前記制御回路に電気的に接続された第1パッドと、
を有する第1チップと、
前記第1パッド上に設けられる第2パッドと、
前記第2パッドの上方に設けられ、第1方向に延び、前記第1方向に直交する断面における径が前記第1基板から離れるほど大きくなる部分を含むプラグと、
前記プラグ上に設けられ、前記第1方向に交差し、前記プラグにより前記第2パッドと電気的に接続されたボンディングパッドと、
を有する第2チップと、
を備える半導体装置。 - 前記第1チップは、
前記制御回路の上方に設けられ、前記制御回路に電気的に接続された第3パッド、
をさらに備え、
前記第2チップは、
前記第3パッド上に設けられる第4パッドと、
前記第4パッドに電気的に接続されるメモリセルアレイと、
をさらに備える、
請求項1に記載の半導体装置。 - 前記第2チップは、前記ボンディングパッド上に設けられた絶縁膜をさらに備え、
前記絶縁膜は、前記ボンディングパッドの上面を露出させる開口部を有する、
請求項1または2に記載の半導体装置。 - 前記開口部は、前記第1方向に前記プラグと重なり合う位置に設けられている、請求項3に記載の半導体装置。
- 前記開口部は、前記第1方向に前記プラグと重なり合わない位置に設けられている、請求項3に記載の半導体装置。
- 前記開口部は、前記第1方向に前記第2チップ内のメモリセルアレイと重なり合う位置に設けられている、請求項5に記載の半導体装置。
- 前記第2チップ内のメモリセルアレイは、前記第1方向に互いに離間して積層された複数の電極層を備え、前記プラグの前記第1チップ側の端部は、最下層の前記電極層の下面よりも低い位置に設けられ、前記プラグの前記第1チップの反対側の端部は、最上層の前記電極層の上面よりも高い位置に設けられている、請求項1から6のいずれか1項に記載の半導体装置。
- 前記第2チップは、前記第2パッドと前記ボンディングパッドとの間に複数本の前記プラグを備える、請求項1から7のいずれか1項に記載の半導体装置。
- 第1ウェハ上に制御回路を形成し、
前記第1ウェハの前記制御回路の上方に設けた貼合面に、前記制御回路に電気的に接続された第1パッドを形成し、
第2ウェハの上方に、第1方向に延び、前記第1方向に直交する断面における径が前記第2ウェハの上方に設ける貼合面から離れるほど大きくなる部分を含むプラグを形成し、
前記第2ウェハの前記貼合面に、前記プラグに電気的に接続される第2パッドを形成し、
前記第2パッドが前記第1パッド上に配置されるように、前記第2ウェハを前記第1ウェハに貼り合わせ、
貼り合わせた前記第2ウェハの前記貼合面とは反対の面に前記プラグを露出させ、
露出した前記プラグ上において、前記第1方向に交差するボンディングパッドを形成し、
貼り合わせたウェハからチップを切り出す、
ことを含む半導体装置の製造方法。 - 前記貼り合わせの後に前記第2ウェハの基板を除去することをさらに含み、
前記ボンディングパッドは、前記基板が除去された後に前記プラグ上に形成される、
請求項9に記載の半導体装置の製造方法。 - 前記ボンディングパッド上に、前記ボンディングパッドの上面を露出させる開口部を有する絶縁膜を形成することをさらに含む、請求項9または10に記載の半導体装置の製造方法。
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TW202034493A (zh) | 2020-09-16 |
CN111681988B (zh) | 2024-03-15 |
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