JP4942009B2 - 半導体装置 - Google Patents
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- JP4942009B2 JP4942009B2 JP2004570847A JP2004570847A JP4942009B2 JP 4942009 B2 JP4942009 B2 JP 4942009B2 JP 2004570847 A JP2004570847 A JP 2004570847A JP 2004570847 A JP2004570847 A JP 2004570847A JP 4942009 B2 JP4942009 B2 JP 4942009B2
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
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- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823857—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
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- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
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- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823892—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the wells or tubs, e.g. twin tubs, high energy well implants, buried implanted layers for lateral isolation [BILLI]
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Description
FIG.6Aは、トランジスタの平面構成を概略的に示す。幅Wの矩形活性領域上に絶縁ゲート電極が形成される。絶縁ゲート電極Gの電流方向長さ(ゲート長)はLである。
FIG.8Nに示すように、フラッシュメモリセルFMを覆うレジストマスクPR34を形成し、FM以外の領域のONO膜32を除去する。その後、レジストマスクPR34は除去する。
FIG.8ZCに示すように、ゲート電極を覆う層間絶縁膜60を形成し、コンタクトホールを形成する。コンタクトホールを埋め込む導電性プラグ61を形成し、さらに表面に配線62を形成する。その後、必要に応じて絶縁膜、配線を形成し、多層配線を形成して半導体装置を完成する。
その後レジストマスクPR51は除去する。
Claims (2)
- 半導体基板の表面から第1の深さ位置に達するように形成された素子分離領域と、
前記半導体基板に形成された第1導電型の第1および第2のウェルと、
前記第1のウェルに形成され、第1の厚さのゲート絶縁膜と、前記第1導電型と逆の第2導電型のソース/ドレイン領域およびゲート電極とを有する第1のトランジスタと、
前記第2のウェルに形成され、前記第1の厚さより薄い第2の厚さのゲート絶縁膜と、第2導電型のソース/ドレイン領域およびゲート電極とを有する第2のトランジスタと、
前記半導体基板に形成された前記第1導電型の第3のウェルと、
前記第3のウェルに形成され、前記第1の厚さのゲート絶縁膜と、前記第2導電型のソース/ドレイン領域およびゲート電極とを有する第3のトランジスタと、
を有し、前記第1のウェルは、前記第1の深さ位置と同等又はより深い深さ位置にのみ極大値を有する第1の不純物濃度分布を有し、前記第2のウェルは、前記第1のウェルと同一の第1の不純物濃度分布に前記第1の深さ位置より浅い第2の深さ位置に極大値を有する不純物濃度分布を重ね合わせ、全体としても第2の深さ位置にも極大値を示す第2の不純物濃度分布を有し、
前記第1の不純物濃度分布は、前記第1の深さ位置と同等又はより深い位置に極大値を有する第3の不純物濃度分布と、前記第1の深さ位置と同等の位置に極大値を有する第4の不純物濃度分布とを重ね合わせたものであり、
前記第3のウェルは、前記第4の不純物濃度分布の極大値と等しい深さ位置に前記第4の不純物濃度分布の極大値よりも小さな極大値を有する第5の不純物濃度分布と、前記第3の不純物濃度分布とを重ね合わせた不純物濃度分布を有する半導体装置。 - 半導体基板の表面から第1の深さ位置に達するように形成された素子分離領域と、
前記半導体基板に形成された第1導電型の第1および第2のウェルと、
前記第1のウェルに形成され、第1の厚さのゲート絶縁膜と、前記第1導電型と逆の第2導電型のソース/ドレイン領域およびゲート電極とを有する第1のトランジスタと、
前記第2のウェルに形成され、前記第1の厚さより薄い第2の厚さのゲート絶縁膜と、第2導電型のソース/ドレイン領域およびゲート電極とを有する第2のトランジスタと、
前記半導体基板に形成された前記第2導電型の第4および第5のウェルと、
前記第4のウェルに形成され、前記第1の厚さのゲート絶縁膜と、前記第1導電型のソース/ドレイン領域およびゲート電極とを有する第4のトランジスタと、
前記第5のウェルに形成され、前記第2の厚さのゲート絶縁膜と、前記第1導電型のソース/ドレイン領域およびゲート電極とを有する第5のトランジスタと、
前記半導体基板に形成された前記第2導電型の第6のウェルと、
前記第6のウェルに形成され、前記第1の厚さのゲート絶縁膜と、前記第1導電型のソース/ドレイン領域およびゲート電極とを有する第6のトランジスタと、
を有し、
前記第1のウェルは、前記第1の深さ位置と同等又はより深い深さ位置にのみ極大値を有する第1の不純物濃度分布を有し、前記第2のウェルは、前記第1のウェルと同一の第1の不純物濃度分布に前記第1の深さ位置より浅い第2の深さ位置に極大値を有する不純物濃度分布を重ね合わせ、全体としても第2の深さ位置にも極大値を示す第2の不純物濃度分布を有し、
前記第4のウェルは、前記第1の深さ位置と同等、又はより深い深さ位置にのみ極大値を有する第6の不純物濃度分布を有し、前記第5のウェルは、前記第4のウェルと同一の第6の不純物濃度分布に、前記第1の深さ位置より浅い深さ位置に極大値を有する不純物濃度分布を重ね合わせた第7の不純物濃度分布を有し、
前記第6の不純物濃度分布は、前記第1の深さ位置と同等又はより深い位置に極大値を有する第8の不純物濃度分布と、前記第1の深さ位置と同等の位置に極大値を有する第9の不純物濃度分布とを重ね合わせたものであり、
前記第6のウェルは、前記第9の不純物濃度分布の極大値と等しい深さ位置に前記第9の不純物濃度分布の極大値よりも小さな極大値を有する第10の不純物濃度分布と、前記第8の不純物濃度分布とを重ね合わせた不純物濃度分布を有する半導体装置。
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PCT/JP2003/004589 WO2004093192A1 (ja) | 2003-04-10 | 2003-04-10 | 半導体装置とその製造方法 |
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JP2009218612A Division JP5110062B2 (ja) | 2009-09-24 | 2009-09-24 | 半導体装置の製造方法 |
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JPWO2004093192A1 JPWO2004093192A1 (ja) | 2006-07-06 |
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US (2) | US7323754B2 (ja) |
EP (1) | EP1612861B1 (ja) |
JP (1) | JP4942009B2 (ja) |
CN (1) | CN100514650C (ja) |
AU (1) | AU2003236078A1 (ja) |
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US7323754B2 (en) | 2008-01-29 |
JPWO2004093192A1 (ja) | 2006-07-06 |
EP1612861B1 (en) | 2018-10-03 |
EP1612861A4 (en) | 2008-09-17 |
US20050230781A1 (en) | 2005-10-20 |
US7605041B2 (en) | 2009-10-20 |
WO2004093192A1 (ja) | 2004-10-28 |
CN100514650C (zh) | 2009-07-15 |
AU2003236078A1 (en) | 2004-11-04 |
EP1612861A1 (en) | 2006-01-04 |
TWI229450B (en) | 2005-03-11 |
CN1701442A (zh) | 2005-11-23 |
US20080090364A1 (en) | 2008-04-17 |
TW200423398A (en) | 2004-11-01 |
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