JP5869112B2 - フレキシブルな基板上に設けられた積層体を含む強誘電体メモリセル中の短絡回路の低減 - Google Patents
フレキシブルな基板上に設けられた積層体を含む強誘電体メモリセル中の短絡回路の低減 Download PDFInfo
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Description
Claims (18)
- 強誘電体メモリセルであって、
フレキシブルな基板上に配列された積層体であって、前記積層体は電気的活性部を有する、積層体と、
前記電気的活性部を傷および摩耗から保護するための保護層と、
前記電気的活性部は、底部電極層および頂部電極層およびそれらの電極に挟まれた少なくともひとつの強誘電体メモリ材料層を含み、
前記積層体は、バッファ層を含み、前記バッファ層は、前記頂部電極層と前記保護層の間に配置され、前記バッファ層は前記保護層に発生する横方向の寸法変化を少なくとも部分的に吸収するように適応され、その結果、前記寸法変化が前記電気的活性部に伝達することが防止され、前記バッファ層はコヒーレント材料の厚さの層によって前記横方向の寸法変化を少なくとも部分的に吸収するように適応され、前記保護層の前記横方向の寸法変化により生じたとき、前記保護層に対向する前記バッファ層の上部における横方向の変形により、前記電気的活性部に対向する底部の横方向の変形を実質的に減少させ、前記上部および底部の間の横方向の変形の差は、吸収された横方向寸法変化に対応する、強誘電体メモリセル。 - 少なくとも部分的に前記横方向の寸法変化を吸収することは、前記横方向寸法変化を少なくとも99%だけ、少なくとも95%だけ、少なくとも90%だけ、少なくとも80%だけ、少なくとも50%だけ、および、少なくとも30%だけ吸収することのいずれかを含む、請求項1に記載の強誘電体メモリセル。
- 前記バッファ層は、ガラス転移温度が、30℃以下または25℃以下である、材料からなる、請求項1または2に記載の強誘電体メモリセル。
- 前記材料は、ガラス転移温度が、30℃以下または25℃以下である、少なくともひとつの材料成分を含むハイブリッド材料である、請求項3記載に記載の強誘電体メモリセル。
- 前記バッファ層は、シリコンゴム、天然ゴム、ポリプロピレングリコール、ポリビニルアセテートおよびアクリレートベース樹脂のいずれかの材料またはそれらの組み合わせを含む、請求項1から4のいずれか一項に記載の強誘電体メモリセル。
- 前記強誘電体メモリ材料層は、有機物または重合体の強誘電体メモリ材料を含む、請求項1から5のいずれか一項に記載の強誘電体メモリセル。
- 前記保護層の前記横方向の寸法変化は前記保護層のキュアなどの硬化処理によって生じ、または、−10℃から+50℃のような強誘電体メモリセルの動作温度範囲での温度差によって生じる、請求項1から6のいずれか一項に記載の強誘電体メモリセル。
- 前記電気的活性部および前記バッファ層の少なくとも一方は前記フレキシブル基板上に印刷されている、請求項1から7のいずれか一項に記載の強誘電体メモリセル。
- 前記保護層は前記バッファ層に直接接している、請求項1から8のいずれか一項に記載の強誘電体メモリセル。
- 前記保護層は、保護膜および、前記保護膜を前記バッファ層に接着する接着剤を含み、硬化した材料が前記接着剤となる、請求項1から9のいずれか一項に記載の強誘電体メモリセル。
- 前記保護層は、保護膜であり、前記バッファ層は前記保護膜を前記積層体の残りの部分に取り付ける接着剤を形成する、請求項1から10のいずれか一項に記載の強誘電体メモリセル。
- 前記頂部電極層は、前記保護層に対向する上面を有し、前記バッファ層は、前記強誘電体メモリセル内で前記頂部電極層の上面全体に沿って延伸する、請求項1から11のいずれか一項に記載の強誘電体メモリセル。
- 強誘電体メモリセルであって、
フレキシブルな基板上に配列された積層体であって、前記積層体は電気的活性部を有する、積層体と、
前記電気的活性部を傷および摩耗から保護するための保護層と、
前記電気的活性部は、底部電極層および頂部電極層およびそれらの電極に挟まれた少なくともひとつの強誘電体メモリ材料層を含み、
前記積層体は、バッファ層を含み、前記バッファ層は、前記頂部電極層と前記保護層の間に配置され、前記バッファ層は前記保護層に発生する横方向の寸法変化を少なくとも部分的に吸収するように適応され、その結果、前記寸法変化が前記電気的活性部に伝達することが防止され、前記バッファ層は、前記保護層と前記頂部電極層との間に制限された非コヒーレント材料から形成され、前記非コヒーレント材料は気体であり、前記バッファ層は、二酸化炭素または空気が充満したガス充満ギャップに対応する、強誘電体メモリセル。 - ガラス転移温度が30℃以下または25℃以下である、強誘電体メモリセル内の短絡回路を減少させるためのバッファ層を形成するための材料であって、前記バッファ層は、頂部電極層と保護層との間に配置され、前記強誘電体メモリセルは、フレキシブルな基板上に形成された積層体を有し、前記積層体は、電気的活性部および、傷および摩耗から前記電気的活性部を保護するための保護層を含み、前記電気的活性部は底部電極層および頂部電極層およびそれらに挟まれた少なくともひとつの強誘電体メモリ材料層を含む、材料を使用したバッファ層。
- フレキシブルな基板上に配置された積層体を有する強誘電体メモリセルを製造するための方法であって、
前記積層体の電気的活性部がその上に配列された前記基板を与える工程であって、前記電気的活性部は、底部電極層および頂部電極層およびそれらに挟まれた少なくともひとつの強誘電体メモリ材料層を含む、工程と、
傷および摩耗から前記電気的活性部を保護するための保護層を設ける工程と、
を備え、当該方法は、
前記保護層を与える前に前記積層体の前記電気的活性部の上部にバッファ層を設ける工程であって、前記バッファ層は、前記保護層で生じる横方向の寸法変化を少なくとも部分的に吸収するために適応され、その結果、前記寸法変化が前記電気的活性部に伝達することが防止され、前記バッファ層はコヒーレント材料の厚さの層によって前記横方向の寸法変化を少なくとも部分的に吸収するように適応され、前記上部の前記横方向の変形が前記保護層の前記横方向の寸法変化により生じたとき、前記保護層に対向する前記バッファ層の上部における横方向の変形により、前記電気的活性部に対向する底部の横方向の変形を実質的に減少させ、前記上部および底部の間の横方向の変形の差は吸収された横方向寸法変化に対応している、工程と、
前記保護層を設ける前に前記電気的活性部を電気的に動作する工程と、
のいずれかまたは両方をさらに備える方法。 - 前記保護層を設ける工程は、流体の層を付着する工程と、続いてそれをキュアリングによって硬化させる工程を含む、請求項15に記載の方法。
- 前記電気的活性部および前記バッファ層の少なくとも一方を印刷によって設ける工程をさらに備える請求項15または16に記載の方法。
- 請求項1から13のいずれか一項に記載の強誘電体メモリセルを備え、受動マトリクスメモリであるメモリ素子。
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PCT/EP2011/060740 WO2013000501A1 (en) | 2011-06-27 | 2011-06-27 | Short circuit reduction in a ferroelectric memory cell comprising a stack of layers arranged on a flexible substrate |
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JP5869112B2 true JP5869112B2 (ja) | 2016-02-24 |
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JP (1) | JP5869112B2 (ja) |
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EP2724342B1 (en) | 2018-10-17 |
US10453853B2 (en) | 2019-10-22 |
US20160336334A1 (en) | 2016-11-17 |
US20140210026A1 (en) | 2014-07-31 |
CN106876398A (zh) | 2017-06-20 |
WO2013000501A1 (en) | 2013-01-03 |
US9412705B2 (en) | 2016-08-09 |
CN103650046B (zh) | 2017-03-15 |
CN106876398B (zh) | 2020-10-20 |
JP2014518454A (ja) | 2014-07-28 |
EP2724342A1 (en) | 2014-04-30 |
CN103650046A (zh) | 2014-03-19 |
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