JP2020520092A - 半導体デバイスのレイアウトおよびその形成方法 - Google Patents
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Abstract
Description
Claims (22)
- 半導体デバイスであって、
ソース領域と、前記半導体デバイス層内に形成された高濃度ドープ本体領域とを有する半導体デバイス層と、
前記半導体デバイス層とゲート電極との間に配置されたゲート誘電体層と、
前記ゲート電極の上方に配置された誘電体層と、
ゲートスタックであって、前記ゲート誘電体層の一部と前記ゲート電極の一部を含み、ソース領域に隣接して形成され、前記高濃度ドープ本体領域に隣接して形成されない、ゲートスタックとを
備える、半導体デバイス。 - 前記高濃度ドープ本体領域は、p+本体領域を含む、請求項1に記載の半導体デバイス。
- 前記高濃度ドープ本体領域は、高度に補償されたp+本体領域を含む、請求項2に記載の半導体デバイス。
- 前記半導体デバイス層に形成されたウェル領域をさらに備え、前記ソース領域および前記ウェル領域は、横方向において前記高濃度ドープ本体領域に隣接する、請求項1に記載の半導体デバイス。
- 前記ソース領域および前記ウェル領域は、前記ゲートスタックに隣接してその下方にある、請求項4に記載の半導体デバイス。
- 前記ゲート誘電体層の厚さは約30nm〜80nmの範囲にある、請求項1に記載の半導体デバイス。
- 前記高濃度ドープ本体領域に隣接して頂部に、ならびにゲート金属層の下方に隣接して形成されたフィールド酸化物層をさらに含む、請求項1に記載の半導体デバイス。
- 前記フィールド酸化物層の厚さは約0.5μm〜1μmの範囲にある、請求項7に記載の半導体デバイス。
- 前記高濃度ドープ本体領域に隣接してかつその頂部に形成された本体接触部をさらに備える、請求項1に記載の半導体デバイス。
- 半導体デバイスであって、
半導体デバイス層と、
前記半導体デバイス層に形成された本体領域と、
前記半導体層とゲート電極との間に配置された誘電体層であって、前記本体領域の上方に配置された前記誘電体層の一部の厚さは約0.5μmよりも大きい誘電体層とを
備える、半導体デバイス。 - 前記半導体デバイス層に形成されたウェル領域と、
前記半導体デバイス層に形成され、前記ウェル領域に隣接するソース領域と、
前記ソース領域に隣接して形成され、前記本体領域に隣接して形成されないゲート誘電体層とをさらに備え、
前記誘電体層は、前記ゲート誘電体層、前記本体領域、および前記ソース領域のそれぞれに隣接する、請求項10に記載の半導体デバイス。 - 前記フィールド酸化物層および前記ゲート誘電体層のそれぞれの頂部に隣接して形成されたゲート金属層をさらに備える、請求項11に記載の半導体デバイス。
- 前記本体領域の頂部に隣接して形成されたソース接触部をさらに備える、請求項10に記載の半導体デバイス。
- 前記ソース領域は、第1のドーピング濃度を有する第1の伝導型を備え、前記本体領域の頂部は、第2のドーピング濃度を有する第2の伝導型を備え、前記第1の伝導型は、前記第2の伝導型と同じではなく、前記第1のドーピング濃度は前記第2のドーピング濃度と同じではない、請求項10に記載の半導体装置。
- 前記第1の伝導型はn+であり、前記第2の伝導型はp+である、請求項14に記載の半導体デバイス。
- 前記第1のドーピング濃度は、前記第2のドーピング濃度よりも低い、請求項14に記載の半導体デバイス。
- 前記第2のドーピング濃度は約1×1018cm‐3から約1×1021cm‐3の範囲であり、前記第1のドーピング濃度は約1×1016cm‐3から約1×1019cm‐3の範囲である、請求項14に記載の半導体デバイス。
- 半導体デバイスであって、
基板と、
前記基板上に形成された活性領域を介して長手方向に配置された第1のストライプのセルであって、前記第1のストライプのセルの前記各セルは高濃度ドープ本体領域を含む、第1のストライプのセルと、
前記基板上に形成された前記活性領域を介して前記第1のストライプのセルと平行に形成された第2のストライプのセルであって、前記第2のストライプのセルは、前記第1のストライプのセルから横方向に離間し、前記第2のストライプのセルの各セルは、高濃度ドープ本体領域を含む、第2のストライプのセルと、
前記第1および第2のストライプのセルのそれぞれの端部に近接して形成され、かつ長手方向の本体領域から縁部までの間隔(φ)で離間して形成された高濃度ドープ領域を有する終端領域とを備え、
前記第1のストライプのセル内の各セルの高濃度ドープ本体領域は、前記第2のストライプのセル内の各セルのそれぞれの高濃度ドープ本体領域から横方向本体領域の間隔(λ)で離間しており、
前記長手方向本体領域から縁部までの間隔(φ)は、前記横方向本体領域の間隔(λ)以下である、半導体デバイス。 - 前記終端領域は、ゲート金属パッド領域の下に形成される、請求項18に記載の半導体デバイス。
- 前記終端領域は、前記デバイスの大部分を通して低インピーダンス経路を提供するゲートバスの下方に形成される、請求項18に記載の半導体デバイス。
- 前記終端領域は、ゲート金属接触領域とは反対側の前記第1および第2のストライプのセルの端部に形成される、請求項18に記載の半導体デバイス。
- 前記長手方向のセグメント化された本体領域縁部の間隔φは、約3μm〜5μmの範囲にある、請求項18に記載の半導体デバイス。
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