JP7636445B2 - エクスタッキングアーキテクチャ用の電極出力構造 - Google Patents
エクスタッキングアーキテクチャ用の電極出力構造 Download PDFInfo
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Description
103 絶縁層
105 半導体層
106 キャップ層
110 アレイ領域
111 絶縁層
112 ワード線層
120 階段領域
121 第1のコンタクト構造
122 第2のコンタクト構造
123 第3のコンタクト構造
130 チャネル構造
131 チャネル層
132 絶縁層
140 接合界面
141 接合構造
142 接合構造
161 第2の導電層、電極出力構造
161a 第2の導電層の第1の部分、第1の電極出力構造
161b 第2の導電層の第2の部分、第2の電極出力構造
171 第1の導電層、電極出力構造
171a 第1の導電層の第1の部分、第1の電極出力構造
171b 第1の導電層の第2の部分、第2の電極出力構造
180 トランジスタ
191 基板
200 半導体デバイス
201 基板
202 エッチング停止層
203 絶縁層
203’ 絶縁層203の裏面側表面
205 半導体層
210 アレイ領域
211 絶縁層
212 ワード線層
220 階段領域
221 第1のコンタクト構造
222 第2のコンタクト構造
223 第3のコンタクト構造
230 チャネル構造
251 コンタクトホール
251’ コンタクトホールの底部
251” コンタクトホールの側壁
261 第2の導電層
261a 第2の導電層の第1の部分
261b 第2の導電層の第2の部分
271 第1の導電層
271a 第1の導電層の第1の部分
271b 第1の導電層の第2の部分
272 凹部構造
D1 第1のダイ
D1’ 第1のダイ
D2 第2のダイ
D2’ 第2のダイ
Claims (20)
- 半導体デバイスを製作する方法であって、
第1のダイと第2のダイとを向かい合わせに接合するステップであって、前記第1のダイが、第1の基板と、前記第1の基板の表面側の絶縁層と、前記絶縁層の第1の部分を通して延在する前記第1のダイの表面側の第1のコンタクト構造と、前記絶縁層の第2の部分の表面側の半導体層とを含む、ステップと、
前記第1のダイの裏面側から前記第1の基板を取り除くことによって、前記第1のダイの前記裏面側から前記第1のコンタクト構造を露出させるステップと、
前記第1のダイの前記裏面側から、前記絶縁層の前記第2の部分においてコンタクトホールを形成するステップであって、前記コンタクトホールが前記半導体層を露出させる、ステップと、
前記第1のダイの前記裏面側に、導電的に前記第1のコンタクト構造に接続される第1の電極出力構造と、前記コンタクトホールで導電的に前記半導体層に接続される第2の電極出力構造とを形成するステップと
を含む、半導体デバイスを製作する方法。 - 前記第1の電極出力構造と前記第2の電極出力構造とを形成するステップが、
前記第1のダイの前記裏面側から、前記第1のコンタクト構造および前記半導体層にわたって第1の導電層を形成するステップであって、前記第1の導電層が前記コンタクトホールを充填する、ステップと、
前記第1のダイの前記裏面側から、前記導電層をパターン形成して、導電的に前記第1のコンタクト構造に接続される前記第1の電極出力構造と、導電的に前記半導体層に接続される前記第2の電極出力構造とを形成するステップと
をさらに含む、請求項1に記載の方法。 - 前記第1の電極出力構造と前記第2の電極出力構造とを形成するステップが、
前記絶縁層の裏面側に第2の導電層を形成するステップであって、前記第2の導電層が、前記第1の導電層と前記第1のコンタクト構造とをつなぎ合わせ、前記第1の導電層と前記半導体層とをつなぎ合わせる、ステップと、
前記第1の導電層と同じフォトマスクを使用して前記第2の導電層をパターン形成するステップと
をさらに含む、請求項2に記載の方法。 - 前記第1の導電層が、第1の金属材料で作られ、
前記第2の導電層が、第2の金属材料で作られる、請求項3に記載の方法。 - 前記第1の導電層が少なくともアルミニウムを含み、
前記第2の導電層が少なくともチタンを含む、請求項4に記載の方法。 - 前記第1のダイの前記裏面側から、前記第1のコンタクト構造を露出させるステップが、
前記第1の基板を取り除いた後、エッチング停止層を取り除くステップであって、前記エッチング停止層が前記第1の基板と前記絶縁層との間に挟まれた、ステップと
をさらに含む、請求項1に記載の方法。 - 前記第1のダイが、前記半導体層の表面側に形成されたメモリセルをさらに含み、
前記第2のダイが、第2の基板の表面側に前記メモリセルのための周辺回路を含む、
請求項1に記載の方法。 - 前記第1のダイと前記第2のダイとを向かい合わせに接合するステップが、
前記第1のダイにおける前記第1のコンタクト構造に接続された第1の接合構造を、前記第2のダイにおける前記周辺回路内の入力回路/出力回路に接続された第2の接合構造に接合するステップをさらに含む、請求項7に記載の方法。 - 前記第2の電極出力構造が、アレイコモンソースを前記メモリセルに与えるように構成される、請求項7に記載の方法。
- 前記第2のダイが、前記第2のダイの表面側に配置されたメモリセルを含み、
前記第1のダイが、前記メモリセルのための周辺回路をさらに含む、請求項1に記載の方法。 - 向かい合わせに接合された第1のダイおよび第2のダイであって、前記第1のダイが、前記第1のダイの裏面側の絶縁層と、前記第1のダイの表面側から前記絶縁層の第1の部分を通して延在する第1のコンタクト構造と、前記絶縁層の第2の部分の表面側の半導体層と、前記半導体層の表面側に形成された第1のトランジスタとを含み、前記絶縁層の一部が、前記第1のコンタクト構造と前記半導体層との間に配置され、前記絶縁層の前記一部が、前記第1のコンタクト構造、及び、前記第1のコンタクト構造に面する前記半導体層の側面に接触する、第1のダイおよび第2のダイと、
前記第1のダイの前記裏面側に配置された第1の電極出力構造であって、前記第1の電極出力構造が、電気的に前記第1のコンタクト構造に結合された、第1の電極出力構造と、
前記第1のダイの前記裏面側に配置された第2の電極出力構造であって、前記第2の電極出力構造が、電気的に前記半導体層に結合され、第2の電極出力構造と
を含む、半導体デバイス。 - 前記第1のトランジスタが、前記第1のダイの前記表面側の半導体層にわたって形成されるメモリセルを含み、
前記第2のダイが、基板と、前記基板の表面側に形成された前記メモリセル用の周辺回路とを含む、請求項11に記載の半導体デバイス。 - 前記メモリセルが、
ワード線層と絶縁層との交互積層体と、
前記積層体を通して延在する複数のチャネル構造であって、チャネル構造が、1つまたは複数の絶縁層によって囲まれたチャネル層を含む、チャネル構造と
を含む、請求項12に記載の半導体デバイス。 - 前記第1のダイがさらに、前記積層体の階段領域に形成された複数のコンタクト構造を含み、前記複数のコンタクト構造が前記ワード線層に結合され、前記階段領域が前記積層体の境界上または中間にある、請求項13に記載の半導体デバイス。
- 前記第1の電極出力構造が、前記第1のコンタクト構造、前記第1のダイと前記第2のダイとの間の接合界面、および前記第2のダイにおける対応する第2のコンタクト構造を介して、前記周辺回路の入力回路/出力回路に結合され、
前記周辺回路が、前記第1のダイにおける対応する第3のコンタクト構造と、前記接合界面と、前記第2のダイにおける対応する第4のコンタクト構造とを介して、前記メモリセルに結合される、請求項12に記載の半導体デバイス。 - 前記第2の電極出力構造が、前記メモリセルにアレイコモンソースを与えるように構成される、請求項12に記載の半導体デバイス。
- 前記第2のダイがさらに、前記基板の表面側に形成されたメモリセルを含み、
前記第1のトランジスタが、前記基板の表面側に形成された、前記メモリセル用の周辺回路を含み、
前記第1の電極出力構造が、前記第1のコンタクト構造を介して、前記周辺回路の入力回路/出力回路に結合され、
前記周辺回路が、前記第1のダイにおける対応するコンタクト構造、前記第1のダイと前記第2のダイとの間の接合界面、および前記第2のダイにおける対応するコンタクト構造を介して、前記メモリセルに結合される、請求項12に記載の半導体デバイス。 - 前記第1の電極出力構造が、第1の導電層の第1の部分を含み、
前記第2の電極出力構造が、前記第1の導電層の第2の部分を含み、
前記第1の導電層の前記第1の部分が、前記第1の導電層の前記第2の部分から間隔をおいて配置され、
前記第1の導電層が、第1の金属材料で作られる、請求項11に記載の半導体デバイス。 - 前記第1の電極出力構造がさらに、前記第1のコンタクト構造と前記第1の導電層との間に配置された第2の導電層の第1の部分を含み、
前記第2の電極出力構造がさらに、前記半導体層と前記第1の導電層との間に配置された前記第2の導電層の第2の部分を含み、
前記第2の導電層の前記第1の部分が、前記第2の導電層の前記第2の部分から間隔をおいて配置され、
前記第2の導電層が、第2の金属材料で作られる、請求項18に記載の半導体デバイス。 - 前記第1の金属材料がアルミニウムで作られ、
前記第2の金属材料がチタンで作られる、請求項19に記載の半導体デバイス。
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