JP6918959B2 - メモリデバイスおよび方法 - Google Patents
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- H10W20/43—Layouts of interconnections
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- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C2029/0401—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals in embedded memories
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing
- G11C29/12—Built-in arrangements for testing, e.g. built-in self testing [BIST] or interconnection details
- G11C2029/1202—Word line control
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing
- G11C29/12—Built-in arrangements for testing, e.g. built-in self testing [BIST] or interconnection details
- G11C2029/1204—Bit line control
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/08—Functional testing, e.g. testing during refresh, power-on self testing [POST] or distributed testing
- G11C29/12—Built-in arrangements for testing, e.g. built-in self testing [BIST] or interconnection details
- G11C2029/1206—Location of test circuitry on chip or wafer
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- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/04—Detection or location of defective memory elements, e.g. cell constructio details, timing of test signals
- G11C29/50—Marginal testing, e.g. race, voltage or current testing
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- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/56—External testing equipment for static stores, e.g. automatic test equipment [ATE]; Interfaces therefor
- G11C2029/5602—Interface to device under test
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Description
Claims (19)
- メモリデバイスであって、
メモリアレイ構造であって、
メモリアレイスタックと、
前記メモリアレイスタックの少なくとも一部を通って垂直に延びる貫通アレイ接点(TAC)と、
1つまたは複数のメモリアレイ接点と
を含む、メモリアレイ構造と、
前記メモリアレイ構造の前面の第1の誘電体層と、
前記第1の誘電体層内の複数の第1の接点と、
前記メモリアレイ構造の裏面の複数の導電性パッドと、
前面に試験回路が形成された相補型金属酸化物半導体(CMOS)構造と、
前記CMOS構造の前面の金属層であって、前記試験回路に電気的に接続された複数の金属パターンを含み、前記試験回路上に配置された金属層と、
前記金属層上の第2の誘電体層と、
前記第2の誘電体層内の複数の第2の接点と
を含み、
前記第1の誘電体層および前記第2の誘電体層は向かい合わせて接合され、それにより、前記メモリアレイ構造が前記CMOS構造の上側にあり、少なくとも前記複数の導電性パッド、前記TAC、前記複数の第1の接点、前記複数の第2の接点、前記金属層内の前記複数の金属パターン、および前記1つまたは複数のメモリアレイ接点の少なくとも1つによって、1つまたは複数の電気接続が形成される、
メモリデバイス。 - 前記複数の第1の接点の少なくとも1つおよび前記複数の第2の接点の少なくとも1つが、接点信号経路を形成する、
請求項1に記載のメモリデバイス。 - 前記1つまたは複数のメモリアレイ接点が、ワード線接点およびビット線接点の少なくとも一方を含む、
請求項2に記載のメモリデバイス。 - 前記複数の導電性パッド、前記TAC、前記複数の第1の接点、前記複数の第2の接点、前記金属層内の前記複数の金属パターン、および前記ワード線接点が、電気的に接続されて、第1の前記1つまたは複数の電気接続を形成して複数の接点信号経路を試験する、
請求項3に記載のメモリデバイス。 - 前記複数の導電性パッド、前記TAC、前記複数の第1の接点、前記複数の第2の接点、前記金属層内の前記複数の金属パターン、および前記ビット線接点が、電気的に接続されて、第2の前記1つまたは複数の電気接続を形成して複数の接点信号経路を試験する、
請求項3に記載のメモリデバイス。 - 前記複数の接点信号経路が、直列に接続される、
請求項4に記載のメモリデバイス。 - 前記複数の接点信号経路の少なくともいくつかが、並列に接続される、
請求項4に記載のメモリデバイス。 - 前記複数の接点信号経路の少なくとも半分が、並列に接続される、
請求項7に記載のメモリデバイス。 - 前記試験回路が、メモリアレイ構造試験回路および接点信号経路試験回路の少なくとも一方を含む、
請求項1に記載のメモリデバイス。 - 前記メモリアレイ構造試験回路が、メモリプレーン試験回路、メモリブロック試験回路、ビット線試験回路、およびワード線試験回路の少なくとも1つを含む、
請求項9に記載のメモリデバイス。 - 前記メモリアレイ構造が、第3の接点をさらに含み、前記複数の導電性パッドの少なくとも1つが、前記第3の接点によって前記TACに電気的に接続される、
請求項1に記載のメモリデバイス。 - メモリデバイスを形成するための方法であって、
メモリアレイスタックおよび1つまたは複数のメモリアレイ接点を含むメモリアレイ構造を形成することと、
前記メモリアレイ構造の前記メモリアレイスタックの少なくとも一部を通って垂直に延びる貫通アレイ接点(TAC)を形成することと、
前記メモリアレイ構造の前面に第1の誘電体層を形成することと、
前記第1の誘電体層内に複数の第1の接点を形成することと、
前記メモリアレイ構造の裏面に複数の導電性パッドを形成することと、
前面に試験回路が形成された相補型金属酸化膜半導体(CMOS)構造を形成することと、
前記CMOS構造の前面に金属層であって、前記試験回路に電気的に接続された複数の金属パターンを含み、前記試験回路上に配置された金属層を形成することと、
前記金属層上に第2の誘電体層を形成することと、
前記第2の誘電体層内に複数の第2の接点を形成することと、
前記第1の誘電体層および前記第2の誘電体層を向かい合わせて接合することを含み、それにより、前記メモリアレイ構造が前記CMOS構造の上側にあり、少なくとも前記複数の導電性パッド、前記TAC、前記複数の第1の接点、前記複数の第2の接点、前記金属層内の前記複数の金属パターン、および前記1つまたは複数のメモリアレイ接点の少なくとも1つによって、1つまたは複数の電気接続が形成される、
方法。 - 前記CMOS構造の前面に金属層を形成する前に、前記試験回路を形成することをさらに含み、前記金属層が、前記試験回路に電気的に接続される、
請求項12に記載の方法。 - 前記メモリアレイ構造の裏面に複数の導電性パッドを形成する前に、前記メモリアレイ構造の前記裏面から第3の接点を形成することをさらに含み、
前記複数の導電性パッドの少なくとも1つが、前記第3の接点によって前記TACに電気的に接続され、
前記複数の導電性パッドの前記少なくとも1つが、前記第3の接点の上側に形成される、
請求項12に記載の方法。 - 請求項1〜11のいずれか1項に記載のメモリデバイスを試験するための方法であって、
プローブカードの第1のプローブによって前記メモリデバイスの第1の前記導電性パッドであって、第1の前記導電性パッドの少なくとも一部が、前記メモリデバイスの上面上にある第1の前記導電性パッドに入力信号を印加することと、
少なくとも第1の前記導電性パッド、前記メモリデバイスの第1の前記貫通アレイ接点(TAC)、前記メモリデバイスにおける前記第1の誘電体層と前記第2の誘電体層との間の結合インターフェースを通過する第1の相互接続構造、ならびに前記メモリアレイ接点および前記試験回路の少なくとも一方を介して、前記入力信号を前記メモリデバイスの試験構造に送信することと、
少なくとも前記結合インターフェースを通過する第2の相互接続構造、前記メモリデバイスの第2の前記TAC、ならびに前記メモリアレイ接点および前記試験回路の前記少なくとも一方を介して、前記試験構造から出力信号を受信することと、
前記プローブカードの第2のプローブによって前記メモリデバイスの第2の前記導電性パッドであって、第2の前記導電性パッドの少なくとも一部が、前記メモリデバイスの前記上面上にある第2の前記導電性パッドからの前記出力信号を測定することと、
前記入力信号および前記出力信号に基づいて、前記試験構造の特性を決定することと
を含む、方法。 - 前記試験構造の前記特性が、相互接続構造の抵抗を含む、
請求項15に記載の方法。 - 前記試験構造の前記特性が、相互接続構造の静電容量を含む、
請求項15に記載の方法。 - 前記試験構造の前記特性が、前記試験回路に電気的に接続された周辺デバイスの特性を含む、
請求項15に記載の方法。 - 前記試験構造の前記特性が、前記メモリアレイ接点に電気的に接続されたメモリ構造の特性を含む、
請求項15に記載の方法。
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| CN201710134368.0 | 2017-03-08 | ||
| CN201710134368.0A CN106920797B (zh) | 2017-03-08 | 2017-03-08 | 存储器结构及其制备方法、存储器的测试方法 |
| PCT/CN2018/077754 WO2018161841A1 (en) | 2017-03-08 | 2018-03-01 | Structure and method for testing three-dimensional memory device |
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| CN106920797B (zh) | 2017-03-08 | 2018-10-12 | 长江存储科技有限责任公司 | 存储器结构及其制备方法、存储器的测试方法 |
| CN107527661B (zh) * | 2017-08-31 | 2020-08-28 | 长江存储科技有限责任公司 | 一种字线电阻测试方法及三维存储器失效分析方法 |
| US10840205B2 (en) | 2017-09-24 | 2020-11-17 | Invensas Bonding Technologies, Inc. | Chemical mechanical polishing for hybrid bonding |
| CN107946202B (zh) * | 2017-11-16 | 2018-12-14 | 长江存储科技有限责任公司 | 短制程阶段的三维存储器电性测试方法及测试结构 |
| US10510738B2 (en) | 2018-01-17 | 2019-12-17 | Sandisk Technologies Llc | Three-dimensional memory device having support-die-assisted source power distribution and method of making thereof |
| US10283493B1 (en) * | 2018-01-17 | 2019-05-07 | Sandisk Technologies Llc | Three-dimensional memory device containing bonded memory die and peripheral logic die and method of making thereof |
| US11056348B2 (en) | 2018-04-05 | 2021-07-06 | Invensas Bonding Technologies, Inc. | Bonding surfaces for microelectronics |
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