JP2023518275A - メモリ及びメモリの製造方法 - Google Patents
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- 230000015654 memory Effects 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 230000006870 function Effects 0.000 claims abstract description 92
- 238000005192 partition Methods 0.000 claims abstract description 90
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 239000003990 capacitor Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000001668 ameliorated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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Abstract
Description
本願は、2020年08月06日に提出された、出願番号が202010784622.3であり、出願名称が「メモリ及びメモリの製造方法」である中国特許出願を援用し、そして、当該中国特許出願に基づく優先権を主張し、その全内容が参照として本願に組み込まれる。
本願の第3実施例は、メモリの製造方法を提供する。該方法は、第1実施例によるメモリを製造するために用いられる。図6~図9は、本願の第3実施例によるメモリの製造方法における各ステップに対応する構造概略図である。
Claims (13)
- メモリであって、
基板であって、前記基板上に第1フィン及び第2フィンが分立され、少なくとも2つの前記第1フィンは、隣接する前記第2フィンの間に位置し、隣接する前記第1フィンの間の間隔は、前記第1フィンと前記第2フィンとの間隔よりも小さく、前記基板の表面は、仕切構造を有し、前記仕切構造は、第1仕切構造と、第2仕切構造と、を含み、前記第1仕切構造は、隣接する前記第1フィンの間に位置し、前記第2仕切構造は、前記第1フィンと前記第2フィンとの間に位置し、誘電体層は、前記第1フィンの頂部及び前記仕切構造によって露出される側壁表面を覆い、且つ前記第2フィンの頂部及び前記仕切構造によって露出される側壁表面を更に覆う、基板と、
仕事関数層であって、前記誘電体層の表面に位置し、且つ前記第1フィン及び前記第2フィンの配列方向に平行な方向に、前記少なくとも2つの第1フィンの対向する側壁上の前記仕事関数層は、第1厚さを有し、前記第1フィンの、前記第2フィンに向かう側壁上の前記仕事関数層は、第2厚さを有し、且つ前記第1厚さは、前記第2厚さよりも大きい、仕事関数層と、
前記仕事関数層の表面に位置する導電層と、を備える、メモリ。 - 前記基板が前記第1フィンに指向する方向において、隣接する前記第1フィンの対向する領域内に、前記誘電体層と前記第1仕切構造は、第1充填領域を囲み、前記仕事関数層は、前記第1充填領域を満たす
請求項1に記載のメモリ。 - 前記少なくとも2つの第1フィンの対向する側壁上の前記仕事関数層の間に隙間を有する
請求項1に記載のメモリ。 - 前記仕事関数層は、前記誘電体層の表面全体を覆う第1仕事関数層と、前記少なくとも2つの第1フィンの対向する側壁上の前記第1仕事関数層上に位置する第2仕事関数層と、を含む
請求項1に記載のメモリ。 - 前記第1仕事関数層の材料は、前記第2仕事関数層の材料と同じである
請求項4に記載のメモリ。 - 前記第1厚さは、5-50nmであり、前記第2厚さは、2-30nmである
請求項1に記載のメモリ。 - 前記第1厚さと前記第2厚さとの差は、3nm~30nmである
請求項1に記載のメモリ。 - 前記仕事関数層の仕事関数は、前記導電層の仕事関数よりも大きい
請求項1に記載のメモリ。 - 前記仕事関数層の材料は、窒化チタン、コバルト又はニッケルを含む
請求項8に記載のメモリ。 - メモリの製造方法であって、
基板を提供することであって、前記基板上に第1フィン及び第2フィンが分立され、少なくとも2つの前記第1フィンは、隣接する前記第2フィンの間に位置し、隣接する前記第1フィンの間の間隔は、前記第1フィンと前記第2フィンとの間隔よりも小さく、前記基板の表面は、仕切構造を有し、前記仕切構造は、第1仕切構造と、第2仕切構造と、を含み、前記第1仕切構造は、隣接する前記第1フィンの間に位置し、前記第2仕切構造は、前記第1フィンと前記第2フィンとの間に位置する、ことと、
前記第1フィンの頂部及び前記仕切構造によって露出される側壁表面に誘電体層を形成することであって、前記誘電体層が前記第2フィンの頂部及び前記仕切構造によって露出される側壁表面を覆う、ことと、
前記誘電体層の表面に仕事関数層を形成することであって、前記第1フィン及び前記第2フィンの配列方向に平行な方向に、前記少なくとも2つの第1フィンの対向する側壁上の前記仕事関数層は、第1厚さを有し、前記第1フィンの、前記第2フィンに向かう側壁上の前記仕事関数層は、第2厚さを有し、且つ前記第1厚さは、前記第2厚さよりも大きい、ことと、
前記仕事関数層の表面に導電層を形成することであって、前記導電層の仕事関数値は、前記仕事関数層の仕事関数値よりも小さい、ことと、を含む、メモリの製造方法。 - 前記基板が前記第1フィンに指向する方向に沿って、隣接する前記第1フィンの対向する領域内に、前記誘電体層と前記第1仕切構造は、第1充填領域を囲み、前記仕事関数層を形成することは、前記誘電体層の表面全体に前記仕事関数層を形成し、前記第1充填領域を満たすまで継続することを含む
請求項10に記載のメモリの製造方法。 - 前記仕事関数層を形成することは、前記誘電体層の表面全体に第1仕事関数層を形成することと、前記少なくとも2つの第1フィンの対向する側壁上の第1仕事関数層上に位置する第2仕事関数層を形成することと、を含む
請求項10に記載のメモリの製造方法。 - 前記第2仕事関数層を形成することは、前記第1仕事関数層の表面に犠牲層を形成することと、隣接する前記第1フィンの対向する領域内の前記犠牲層を除去することと、隣接する前記第1フィンの対向する領域内の前記第1仕事関数層の表面に前記第2仕事関数層を形成することと、前記第1フィンの、前記第2フィンに対向する領域内の前記犠牲層を除去することと、を含む
請求項12に記載のメモリの製造方法。
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CN202010784622.3A CN114068535B (zh) | 2020-08-06 | 2020-08-06 | 存储器和存储器的制备方法 |
CN202010784622.3 | 2020-08-06 | ||
PCT/CN2021/103700 WO2022028161A1 (zh) | 2020-08-06 | 2021-06-30 | 存储器和存储器的制备方法 |
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US20190067278A1 (en) * | 2017-08-28 | 2019-02-28 | Samsung Electronics Co., Ltd. | Semiconductor device including a gate insulation pattern and a gate electrode pattern |
WO2019091493A1 (en) * | 2017-11-13 | 2019-05-16 | Changxin Memory Technologies, Inc. | Asymmetric finfet in memory device, method of fabricating same and semiconductor device |
CN111200019A (zh) * | 2018-11-20 | 2020-05-26 | 中芯国际集成电路制造(上海)有限公司 | 半导体结构及其形成方法 |
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KR100587672B1 (ko) | 2004-02-02 | 2006-06-08 | 삼성전자주식회사 | 다마신 공법을 이용한 핀 트랜지스터 형성방법 |
KR101194973B1 (ko) | 2010-04-27 | 2012-10-25 | 에스케이하이닉스 주식회사 | 반도체 소자의 트랜지스터 및 그 형성방법 |
CN103165613A (zh) | 2011-12-12 | 2013-06-19 | 中国科学院微电子研究所 | 半导体存储器及其制造方法 |
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KR102377358B1 (ko) * | 2017-10-16 | 2022-03-23 | 삼성전자주식회사 | 반도체 메모리 소자 및 그 제조 방법 |
CN210296374U (zh) | 2019-09-04 | 2020-04-10 | 福建省晋华集成电路有限公司 | 存储器 |
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- 2021-06-30 EP EP21853856.9A patent/EP4084072A4/en active Pending
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US20150263113A1 (en) * | 2012-10-24 | 2015-09-17 | Samsung Electronics Co., Ltd. | Semiconductor device having buried channel array |
US20190067278A1 (en) * | 2017-08-28 | 2019-02-28 | Samsung Electronics Co., Ltd. | Semiconductor device including a gate insulation pattern and a gate electrode pattern |
CN109427789A (zh) * | 2017-08-28 | 2019-03-05 | 三星电子株式会社 | 半导体器件 |
WO2019091493A1 (en) * | 2017-11-13 | 2019-05-16 | Changxin Memory Technologies, Inc. | Asymmetric finfet in memory device, method of fabricating same and semiconductor device |
CN111200019A (zh) * | 2018-11-20 | 2020-05-26 | 中芯国际集成电路制造(上海)有限公司 | 半导体结构及其形成方法 |
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US20220045068A1 (en) | 2022-02-10 |
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KR20220164587A (ko) | 2022-12-13 |
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