JP2019507961A - 導電性構造、導電性構造を含むシステムと装置および関連する方法 - Google Patents
導電性構造、導電性構造を含むシステムと装置および関連する方法 Download PDFInfo
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Abstract
Description
本願は、「CONDUCTIVE STRUCTURES, SYSTEMS AND DEVICES INCLUDING CONDUCTIVE STRUCTURES AND RELATED METHODS」と題して2016年3月11日に出願された米国特許出願第15/068,329号に基づく出願日の利益を請求する。
本開示の実施形態は、導電性構造(例えば、細長い階段状導電性構造)であって導電性構造の少なくとも一部を通って延びる複数の接点を有するもの、このような導電性構造を含む装置、このような導電性構造を含むシステム、このような導電性構造を製造する方法、および細長い階段状導電性構造のための電気接続を形成する方法に関する。
例えば、金属材料(例えば、W、Ni、窒化タンタル(TaN)、Pt、窒化タングステン(WN)、Au、窒化チタン(TiN)、または窒化チタンアルミニウム(TiAlN))、ポリシリコン、他の導電性材料またはこれらの組み合わせの材料から作られ得る。
いくつかの実施形態においては、内側スタックスロット要素238は、階段状構造206、208、210のサブブロック(例えば、副段、副階層、サブプレート)を画定するよう機能してもよい。
Claims (25)
- 導電性構造であって、
前記導電性構造の長さに沿って設置される複数の階段状構造であって、それぞれの階段状構造は少なくとも二つの導電性の段を含み、前記少なくとも二つの導電性の段のそれぞれの導電性の段は絶縁性材料によって前記少なくとも二つの導電性の段のうちの隣り合う導電性の段から少なくとも部分的に分離される前記複数の階段状構造、
前記導電性構造を通って延びる少なくとも一つのビアを含む少なくとも一つのランディングであって、前記複数の階段状構造の第一の階段状構造と前記第一の階段状構造の隣りに設置される前記複数の階段状構造の第二の階段状構造の間に設置される前記少なくとも一つのランディング、および
複数のアクセス線であって、それぞれのアクセス線は前記少なくとも二つの導電性の段のうち一つの導電性の段の導電性部分から前記少なくとも一つのビアまで延びる前記複数のアクセス線、
を含む前記導電性構造。 - 前記少なくとも一つのビアは複数のビアからなり、それぞれのアクセス線が前記階段状構造の少なくとも二つの導電性の段のうち一つの導電性の段の導電性部分から前記複数のビアのうち一つのビアへ延びる、
請求項1に記載の導電性構造。 - 少なくとも一組の追加の階段状構造と少なくとも一つの追加のランディングを更に含み、前記少なくとも一組の追加の階段状構造のそれぞれの追加の階段状構造は前記少なくとも一組の別の階段状構造の反対側にあり前記少なくとも一つの追加のランディングが間にある、
請求項1に記載の導電性構造。 - 前記複数の階段状構造のうち少なくとも一つには少なくとも一つの階段状構造の導電性の段に接続されるアクセス線がない、
請求項1に記載の導電性構造。 - 前記少なくとも一つのランディングは複数のランディングからなり、前記複数のランディングのうちそれぞれのランディングは一組の前記階段状構造の間に設置される、
請求項1に記載の導電性構造。 - 前記少なくとも一つのランディングは交互になっている第一の材料と第二の材料の層によって画定され、前記第一の材料と前記第二の材料はそれぞれ絶縁性材料を含む、
請求項1に記載の導電性構造。 - 前記少なくとも一つのランディングは交互になっている第一の材料と第二の材料の層によって画定され、前記第一の材料は導電性材料を含み、前記第二の材料は絶縁性材料を含む、
請求項1に記載の導電性構造。 - 前記少なくとも一つのビアを少なくとも部分的に囲み、前記少なくとも一つのビアを前記少なくとも一つのランディングの導電性材料から絶縁する絶縁性ライナーを更に含む、
請求項7に記載の導電性構造。 - 前記少なくとも一つのビアは前記複数の階段状構造と前記少なくとも一つのランディングの下にある少なくとも一つの制御部と動作可能に結合される、
請求項1に記載の導電性構造。 - 前記複数の階段状構造のうち少なくともいくつかはそれぞれワード線プレート構造を含む、
請求項1に記載の導電性構造。 - 前記複数の階段状構造のうち一つの階段状構造がドレイン側選択ゲート(SGD)構造を含む、
請求項1に記載の導電性構造。 - 前記導電体構造の長さに沿って延びるスタックスロット要素を更に含む、
請求項1から請求項11の何れか1項に記載の導電性構造。 - 前記スタックスロット要素は
前記導電性構造の前記長さの大部分に沿って連続的に延びる複数の外側スタックスロット要素、および
前記導電性構造の前記長さに沿って不連続的に延びる複数の内側スタックスロット要素を含む、
請求項12に記載の導電性構造。 - 前記複数の内側スタックスロット要素は前記複数の階段状構造の最も近くに設置される、
請求項13に記載の導電性構造。 - 前記少なくとも一つのランディングには前記複数の内側スタックスロット要素がない、
請求項14に記載の導電性構造。 - 前記複数のスタックスロット要素は置換ゲート工程で積層される導電性材料の上に設置される絶縁性材料を含む、
請求項13に記載の導電性構造。 - 複数のメモリセルのアレイ、および
前記アレイの複数のメモリセルを選択するために前記複数のメモリセルのアレイの隣に設置されて電子通信を行う請求項1から請求項16のいずれか1項に記載の導電性構造を含む、
装置。 - 導電性構造を形成する方法であって、
二つの階段状構造の間に画定される前記導電性構造のランディングに材料の層を通して複数の開口部を形成する工程であって、前記二つの階段状構造は半導体デバイス寄りの片側に設置され電子通信を行う前記工程、
前記材料の層の前記複数の開口部に複数の接点を形成する工程、および
前記階段状構造の少なくとも一段の導電性部分と前記複数の接点のうち少なくとも一つの接点を電気的に結合する工程、
を含む方法。 - 前記材料の層を、交互になっている絶縁性と導電性材料で形成する工程を更に含む、
請求項18に記載の方法。 - 前記複数の開口部のそれぞれの開口部に、前記開口部の中にある接点を囲むためのライナーを形成する工程を更に含む、
請求項19に記載の方法。 - 前記材料の層を、第一の絶縁性材料と第二の犠牲絶縁性材料を含み、交互になっている複数の絶縁性材料で形成する工程を更に含む、
請求項18に記載の方法。 - 材料の層を通る開口部を形成する工程、
前記開口部の隣にある前記第二の犠牲絶縁材料の一部を前記第一の絶縁性材料の下にある第二の犠牲材料のある容量の分だけ除去する工程、および
前記階段状構造の少なくとも一段の前記導電性部分を形成するために、前記第二の犠牲材料の前記一部を除去した前記容量分の導電性材料を前記開口部に積層する工程、
を更に含む、
請求項21に記載の方法。 - 前記開口部内の前記導電性材料の一部を除去する工程、および
前記開口部内に別の絶縁性材料を積層する工程、
を更に含む、
請求項22に記載の方法。 - 前記別の絶縁性材料の周辺で、前記階段状構造の少なくとも一段の前記導電性部分と前記少なくとも一段の隣り合う別の導電性部分の間に電気接続を形成する工程
を更に含む、
請求項23に記載の方法。 - 前記導電性構造の前記ランディングをマスクして、前記複数の階段状構造のうち少なくとも一つの階段状構造に対して置換ゲート工程を行う工程
を更に含む、
請求項18から請求項24のいずれか1項に記載の方法。
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US15/068,329 US9941209B2 (en) | 2016-03-11 | 2016-03-11 | Conductive structures, systems and devices including conductive structures and related methods |
PCT/US2017/020456 WO2017155784A1 (en) | 2016-03-11 | 2017-03-02 | Conductive structures, systems and devices including conductive structures and related methods |
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