JP7209857B2 - スタックされた3次元異種メモリデバイス、および、それを形成するための方法 - Google Patents
スタックされた3次元異種メモリデバイス、および、それを形成するための方法 Download PDFInfo
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- JP7209857B2 JP7209857B2 JP2021545761A JP2021545761A JP7209857B2 JP 7209857 B2 JP7209857 B2 JP 7209857B2 JP 2021545761 A JP2021545761 A JP 2021545761A JP 2021545761 A JP2021545761 A JP 2021545761A JP 7209857 B2 JP7209857 B2 JP 7209857B2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B69/00—Erasable-and-programmable ROM [EPROM] devices not provided for in groups H10B41/00 - H10B63/00, e.g. ultraviolet erasable-and-programmable ROM [UVEPROM] devices
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Description
本出願は、2019年4月15日に出願された「INTEGRATION OF THREE-DIMENSIONAL NAND MEMORY DEVICES WITH MULTIPLE FUNCTIONAL CHIPS」という標題の国際出願第PCT/CN2019/082607号の優先権の利益を主張し、その文献は、その全体が参照により本明細書に組み込まれている。
102 第1の半導体構造体
104 第2の半導体構造体
106 第3の半導体構造体
108 第1のボンディングインターフェース
110 第2のボンディングインターフェース
200 3Dメモリデバイス
300 3Dメモリデバイス
302 第1のボンディングインターフェース
304 第2のボンディングインターフェース
400 3Dメモリデバイス
501 半導体構造体
503 半導体構造体
504 SRAM
505 半導体構造体
506 NANDメモリ
508 ワードラインドライバ
510 ページバッファ
512 DRAM
514 行デコーダ
516 列デコーダ
601 半導体構造体
603 半導体構造体
605 半導体構造体
700 3Dメモリデバイス
701 3Dメモリデバイス
702 第1の半導体構造体
703 第1の半導体構造体
704 第2の半導体構造体
705 第2の半導体構造体
706 第3の半導体構造体
707 第3の半導体構造体
708 第1のボンディングインターフェース
709 第1のボンディングインターフェース
710 第2のボンディングインターフェース
711 第2のボンディングインターフェース
712 基板
713 基板
714 DRAMセル
715 メモリスタック
716 DRAM選択トランジスタ
717 3D NANDメモリストリング
718 キャパシタ
719 プラグ
720 ビットライン
721 プラグ
722 共通のプレート
723 相互接続層
724 相互接続層
725 ボンディング層
726 ボンディング層
727 ボンディング接触部
728 ボンディング接触部
729 ボンディング層
730 ボンディング層
731 ボンディング接触部
732 ボンディング接触部
733 半導体層
734 SRAMセル
735 SRAMセル
736 トランジスタ
737 相互接続層
738 相互接続層
739 ボンディング層
740 ボンディング層
741 ボンディング接触部
742 ボンディング接触部
743 ボンディング層
744 ボンディング層
745 ボンディング接触部
746 ボンディング接触部
747 相互接続層
748 相互接続層
749 DRAMセル
750 3D NANDメモリストリング
751 DRAM選択トランジスタ
752 メモリスタック
753 キャパシタ
754 プラグ
755 ビットライン
756 プラグ
758 半導体層
759 半導体層
760 パッドアウト相互接続層
761 パッドアウト相互接続層
762 接触パッド
763 接触パッド
764 接触部
765 接触部
766 半導体層
767 接触部
768 接触部
769 トランジスタ
802 シリコン基板
803 SRAMセル
804 トランジスタ
805 周辺回路
806 デバイス層
814 相互接続層
816 ボンディング層
818 ボンディング接触部
902 シリコン基板
904 メモリスタック
906 導体層
908 誘電体層
910 3D NANDメモリストリング
912 プラグ
914 メモリフィルム
916 半導体層
918 プラグ
920 相互接続層
922 ボンディング層
924 ボンディング接触部
1002 シリコン基板
1004 トランジスタ、DRAM選択トランジスタ
1006 キャパシタ
1007 ビットライン
1008 DRAMセル
1009 共通のプレート
1014 相互接続層
1016 ボンディング層
1018 ボンディング接触部
1102 第1のボンディングインターフェース
1104 半導体層
1106 ボンディング層
1107 接触部
1108 ボンディング接触部
1202 第2のボンディングインターフェース
1204 半導体層
1206 パッドアウト相互接続層
1208 パッド接触部
1210 接触部
1300 半導体構造体
1302 第1のDRAMスタック
1304 第2のDRAMスタック
1306 基板
1308 DRAMセル
1310 DRAM選択トランジスタ
1312 キャパシタ
1314 ビットライン
1316 相互接続層
1318 シリサイド層
1320 ポリシリコン層
1322 DRAMセル
1323 相互接続層
1324 DRAM選択トランジスタ
1325 ボンディング層
1326 キャパシタ
1327 ボンディング接触部
1328 接触部
1400 半導体構造体
1402 基板
1403 2D NANDメモリセル
1405 ソース/ドレイン
1407 選択トランジスタ
1409 フローティングゲート
1411 制御ゲート
1413 相互接続層
1415 ボンディング層
1417 ボンディング接触部
1500 半導体構造体
1501 半導体構造体
1502 基板
1503 基板
1504 NANDメモリ
1505 半導体層
1506 周辺回路
1507 周辺回路
1508 トランジスタ
1509 トランジスタ
1510 相互接続層
1511 相互接続層
1512 ボンディング層
1514 ボンディング接触部
Claims (20)
- NANDメモリセルのアレイ、および、複数の第1のボンディング接触部を含む第1のボンディング層を含む、第1の半導体構造体と、
ダイナミックランダムアクセスメモリ(DRAM)セルのアレイ、および、複数の第2のボンディング接触部を含む第2のボンディング層を含む、第2の半導体構造体と、
スタティックランダムアクセスメモリ(SRAM)セルのアレイ、複数の第3のボンディング接触部を含む第3のボンディング層、および、複数の第4のボンディング接触部を含む第4のボンディング層を含む、第3の半導体構造体であって、前記第3のボンディング層および前記第4のボンディング層は、前記SRAMセルのアレイの両側にある、第3の半導体構造体と、
前記第1のボンディング層と前記第3のボンディング層との間の第1のボンディングインターフェースであって、前記第1のボンディング接触部は、前記第1のボンディングインターフェースにおいて、前記第3のボンディング接触部と接触している、第1のボンディングインターフェースと、
前記第2のボンディング層と前記第4のボンディング層との間の第2のボンディングインターフェースであって、前記第2のボンディング接触部は、前記第2のボンディングインターフェースにおいて、前記第4のボンディング接触部と接触している、第2のボンディングインターフェースと
を含む、3次元(3D)メモリデバイス。 - 前記第2の半導体構造体は、
基板と、
前記基板の上方の前記DRAMセルのアレイと、
前記DRAMセルのアレイの上方の前記第2のボンディング層と
を含む、請求項1に記載の3Dメモリデバイス。 - 前記第3の半導体構造体は、
前記第2のボンディング層の上方の前記第4のボンディング層と、
前記第4のボンディング層の上方の前記SRAMセルのアレイと、
前記SRAMセルのアレイの上方の前記第3のボンディング層と
を含む、請求項2に記載の3Dメモリデバイス。 - 前記第1の半導体構造体は、
前記第3のボンディング層の上方の前記第1のボンディング層と、
前記第1のボンディング層の上方の前記NANDメモリセルのアレイと、
前記NANDメモリセルのアレイの上方にあり、前記NANDメモリセルのアレイと接触している半導体層と
を含む、請求項3に記載の3Dメモリデバイス。 - 前記半導体層の上方にパッドアウト相互接続層をさらに含む、請求項4に記載の3Dメモリデバイス。
- 前記第1の半導体構造体は、
基板と、
前記基板の上方の前記NANDメモリセルのアレイと、
前記NANDメモリセルのアレイの上方の前記第1のボンディング層と
を含む、請求項1に記載の3Dメモリデバイス。 - 前記第3の半導体構造体は、
前記第1のボンディング層の上方の前記第3のボンディング層と、
前記第3のボンディング層の上方の前記SRAMセルのアレイと、
前記SRAMセルのアレイの上方の前記第4のボンディング層と
を含む、請求項6に記載の3Dメモリデバイス。 - 前記第2の半導体構造体は、
前記第4のボンディング層の上方の前記第2のボンディング層と、
前記第2のボンディング層の上方の前記DRAMセルのアレイと、
前記DRAMセルのアレイの上方にあり、前記DRAMセルのアレイと接触している半導体層と
を含む、請求項7に記載の3Dメモリデバイス。 - 前記半導体層の上方にパッドアウト相互接続層をさらに含む、請求項8に記載の3Dメモリデバイス。
- 前記第1の半導体構造体は、垂直方向に前記第1のボンディング層と前記NANDメモリセルのアレイとの間に第1の相互接続層を含み、
前記第2の半導体構造体は、垂直方向に前記第2のボンディング層と前記DRAMセルのアレイとの間に第2の相互接続層を含み、
前記SRAMセルのアレイは、前記第1の相互接続層ならびに前記第1および第3のボンディング接触部を通して、前記NANDメモリセルのアレイに電気的に接続されており、
前記SRAMセルのアレイは、前記第2の相互接続層ならびに前記第2および第4のボンディング接触部を通して、前記DRAMセルのアレイに電気的に接続されている、請求項1に記載の3Dメモリデバイス。 - 前記NANDメモリセルのアレイは、前記第1および第2の相互接続層ならびに前記第1の、第2の、第3の、および第4のボンディング接触部を通して、前記DRAMセルのアレイに電気的に接続されている、請求項10に記載の3Dメモリデバイス。
- スタティックランダムアクセスメモリ(SRAM)セルのアレイ、および、複数の第1のボンディング接触部を含む第1のボンディング層を含む、第1の半導体構造体と、
ダイナミックランダムアクセスメモリ(DRAM)セルのアレイ、および、複数の第2のボンディング接触部を含む第2のボンディング層を含む、第2の半導体構造体と、
NANDメモリセルのアレイ、複数の第3のボンディング接触部を含む第3のボンディング層、および、複数の第4のボンディング接触部を含む第4のボンディング層を含む、第3の半導体構造体であって、前記第3のボンディング層および前記第4のボンディング層は、前記NANDメモリセルのアレイの両側にある、第3の半導体構造体と、
前記第1のボンディング層と前記第3のボンディング層との間の第1のボンディングインターフェースであって、前記第1のボンディング接触部は、前記第1のボンディングインターフェースにおいて、前記第3のボンディング接触部と接触している、第1のボンディングインターフェースと、
前記第2のボンディング層と前記第4のボンディング層との間の第2のボンディングインターフェースであって、前記第2のボンディング接触部は、前記第2のボンディングインターフェースにおいて、前記第4のボンディング接触部と接触している、第2のボンディングインターフェースと
を含む、3次元(3D)メモリデバイス。 - NANDメモリセルのアレイ、および、複数の第1のボンディング接触部を含む第1のボンディング層を含む、第1の半導体構造体を形成するステップと、
ダイナミックランダムアクセスメモリ(DRAM)セルのアレイ、および、複数の第2のボンディング接触部を含む第2のボンディング層を含む、第2の半導体構造体を形成するステップと、
スタティックランダムアクセスメモリ(SRAM)セルのアレイ、および、複数の第3のボンディング接触部を含む第3のボンディング層を含む、第3の半導体構造体を形成するステップと、
前記第3の半導体構造体および前記第1および第2の半導体構造体のうちの1つを向かい合った様式で結合し、前記第3のボンディング層と前記第1および第2のボンディング層のうちの1つとの間に第1のボンディングインターフェースを有する結合された構造体を形成するステップと、
前記第3の半導体構造体の中に、複数の第4のボンディング接触部を含む第4のボンディング層を形成するステップであって、前記第3のボンディング層および前記第4のボンディング層は、前記SRAMセルのアレイの両側にある、ステップと、
前記結合された構造体および前記第1および第2の半導体構造体のうちの別の1つを向かい合った様式で結合し、前記第4のボンディング層と前記第1および第2のボンディング層のうちの別の1つとの間に第2のボンディングインターフェースを形成するステップと
を含む3次元(3D)メモリデバイスを形成するための方法。 - 前記第1の半導体構造体を形成するステップは、
第1の基板の上方に前記NANDメモリセルのアレイを形成するステップと、
前記NANDメモリセルのアレイの上方に第1の相互接続層を形成するステップと、
前記第1の相互接続層の上方に前記第1のボンディング層を形成するステップと
を含む、請求項13に記載の方法。 - 前記第2の半導体構造体を形成するステップは、
第2の基板の上方に前記DRAMセルのアレイを形成するステップと、
前記DRAMセルのアレイの上方に第2の相互接続層を形成するステップと、
前記第2の相互接続層の上方に前記第2のボンディング層を形成するステップと
を含む、請求項13に記載の方法。 - 前記第3の半導体構造体を形成するステップは、
第3の基板の上に前記SRAMセルのアレイを形成するステップと、
前記SRAMセルのアレイの上方に第3の相互接続層を形成するステップと、
前記第3の相互接続層の上方に前記第3のボンディング層を形成するステップと
を含む、請求項13に記載の方法。 - 前記第3の半導体構造体および前記第1および第2の半導体構造体のうちの1つを結合した後に、前記第3の基板を薄くするステップと、
前記第3の相互接続層と接触するように、薄くされた前記第3の基板を通って垂直方向に延在する接触部を形成するステップと、
薄くされた前記第3の基板の上に、前記接触部と接触して、前記第4のボンディング層を形成するステップと
をさらに含む、請求項16に記載の方法。 - 前記結合された構造体および前記第1および第2の半導体構造体のうちの別の1つを結合した後に、前記第1の半導体構造体は、前記第2の半導体構造体の上方にあり、
前記結合された構造体および前記第1および第2の半導体構造体のうちの別の1つを結合した後に、半導体層を形成するために前記第1の基板を薄くするステップと、
前記半導体層の上方にパッドアウト相互接続層を形成するステップと
をさらに含む、請求項14に記載の方法。 - 前記結合された構造体および前記第1および第2の半導体構造体のうちの別の1つを結合した後に、前記第1の半導体構造体は、前記第2の半導体構造体の下方にあり、
前記結合された構造体および前記第1および第2の半導体構造体のうちの別の1つを結合した後に、半導体層を形成するために前記第2の基板を薄くするステップと、
前記半導体層の上方にパッドアウト相互接続層を形成するステップと
をさらに含む、請求項15に記載の方法。 - 前記結合するステップは、ハイブリッドボンディングを含む、請求項13に記載の方法。
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