JP4477953B2 - メモリ素子の製造方法 - Google Patents
メモリ素子の製造方法 Download PDFInfo
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- JP4477953B2 JP4477953B2 JP2004205215A JP2004205215A JP4477953B2 JP 4477953 B2 JP4477953 B2 JP 4477953B2 JP 2004205215 A JP2004205215 A JP 2004205215A JP 2004205215 A JP2004205215 A JP 2004205215A JP 4477953 B2 JP4477953 B2 JP 4477953B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 37
- 238000000034 method Methods 0.000 title claims description 35
- 230000002093 peripheral effect Effects 0.000 claims description 61
- 239000000758 substrate Substances 0.000 claims description 54
- 230000001681 protective effect Effects 0.000 claims description 39
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 29
- 229910052710 silicon Inorganic materials 0.000 claims description 29
- 239000010703 silicon Substances 0.000 claims description 29
- 239000004065 semiconductor Substances 0.000 claims description 25
- 229910017052 cobalt Inorganic materials 0.000 claims description 13
- 239000010941 cobalt Substances 0.000 claims description 13
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 13
- 238000005530 etching Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 238000001292 planar chromatography Methods 0.000 claims description 9
- 229920002120 photoresistant polymer Polymers 0.000 claims description 8
- 229910021332 silicide Inorganic materials 0.000 claims description 8
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 8
- 238000000059 patterning Methods 0.000 claims description 4
- 102100026827 Protein associated with UVRAG as autophagy enhancer Human genes 0.000 claims 1
- 101710102978 Protein associated with UVRAG as autophagy enhancer Proteins 0.000 claims 1
- 239000010410 layer Substances 0.000 description 89
- 238000000206 photolithography Methods 0.000 description 10
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 8
- 229910021342 tungsten silicide Inorganic materials 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- -1 silicon nitride Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- 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
- H01L21/823437—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/823456—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes gate conductors with different shapes, lengths or dimensions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- 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
- H01L21/823437—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/09—Manufacture or treatment with simultaneous manufacture of the peripheral circuit region and memory cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/50—Peripheral circuit region structures
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/05—Making the transistor
- H10B12/053—Making the transistor the transistor being at least partially in a trench in the substrate
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/48—Data lines or contacts therefor
- H10B12/488—Word lines
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Memories (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
B 周辺回路部
10 シリコン基板
15 素子分離領域
18 パッド酸化膜
20 エッチング阻止層
25 保護酸化膜
28 リセスゲートホール
29 フレーナーゲートホール
30 リセスマスク
35 ゲート酸化膜
40 下部ゲート電極ポリ層
45 上部ゲート電極層
50 ゲートマスク層
60 スペーサ
70 コバルトシリサイド層
Claims (5)
- 半導体基板にセル領域及び前記セル領域と分離された周辺回路領域を含むメモリ素子を製造する方法において、
前記半導体基板のセル領域及び前記周辺回路領域内にパッド酸化膜、エッチング阻止層、及び保護酸化膜を順次形成する段階と、
前記半導体基板の前記セル領域内に前記パッド酸化膜、前記エッチング阻止層、及び前記保護酸化膜を通過し前記半導体基板が掘り込まれたリセスゲートホールを形成する段階と、
前記周辺回路領域内の前記保護酸化膜、前記エッチング阻止層、及び前記パッド酸化膜をエッチングする段階と、
前記リセスゲートホール及び前記周辺回路領域内にゲート酸化膜を形成する段階と、
前記セル領域及び前記周辺回路領域内に形成された前記ゲート酸化膜上にゲート層を形成する段階と、
前記セル領域内にリセスセルゲート構造物及び前記周辺回路領域内にプレーナーゲート構造物を形成するために、前記リセスゲートホール内の前記ゲート酸化膜が残留されるように前記ゲート層及び前記ゲート酸化膜を同時にパターニングする段階と、
前記セル領域内に形成された前記リセスセルゲート構造物の前記保護酸化膜から上方に突出された部分及び前記周辺回路領域内の前記プレーナーゲート構造物にスペーサを形成する段階と、を含むことを特徴とするメモリ素子の製造方法。 - 前記半導体基板の前記周辺回路領域内にコバルトシリサイド層を形成する段階を更に具備することを特徴とする請求項1記載のメモリ素子の製造方法。
- 基板上にメモリセル領域及び周辺回路領域を含むメモリ素子を製造する方法において、
前記メモリセル領域内の複数個のメモリセル及び前記周辺回路領域内の複数個のトランジスタの範囲を限定する素子分離領域を形成させる段階と、
前記メモリセル領域及び前記周辺回路領域を含む前記基板上にパッド酸化膜を形成する段階と、
前記パッド酸化膜上にエッチング阻止層を形成する段階と、
前記エッチング阻止層上に保護酸化膜を形成する段階と、
前記保護酸化膜上にフォトレジスト層を塗布する段階と、
前記メモリセル領域内のフォトレジスト層によりリセスマスクを形成する段階と、
前記メモリセル領域に複数個のリセスゲートホールを形成するために、前記リセスマスクを用いて前記メモリセル領域内の前記基板をエッチングする段階と、
前記周辺回路領域内の前記パッド酸化膜、前記エッチング阻止層、及び前記保護酸化膜を除去する段階と、
前記メモリセル領域に形成された前記パッド酸化膜、前記エッチング阻止層、前記保護酸化膜、及び前記基板からなる複数個のリセスゲートホールの内面を含む前記メモリセル領域の前記保護酸化膜及び前記周辺回路領域上にゲート酸化膜を形成する段階と、
前記ゲート酸化膜上にゲート層を形成する段階と、
前記メモリセル領域内で前記複数個のメモリセルのためのリセスセルゲート構造物及び前記周辺回路領域内の複数個のトランジスタのためのプレーナーゲート構造物を同時に形成するために、前記リセスセルゲート構造物となる前記リセスゲートホール内の前記ゲート酸化膜とその上の前記ゲート層及び前記プレーナーゲート構造物となる前記ゲート酸化膜とその上の前記ゲート層が残留するように前記ゲート層及び前記ゲート酸化膜を同時にパターニングする段階と、
前記メモリセル領域内に形成された前記リセスセルゲート構造物の前記保護酸化膜から上方に突出された部分及び前記周辺回路領域内の前記プレーナーゲート構造物にスペーサを形成する段階と、を含むことを特徴とするメモリ素子の製造方法。 - 前記スペーサを形成する段階の後、
前記周辺回路領域の前記基板上にコバルトシリサイド層を形成する段階を更に具備することを特徴とする請求項3記載のメモリ素子の製造方法。 - 前記コバルトシリサイド層を形成する段階は、
前記周辺回路領域の露出された前記基板上に、シリコンエピタキシャル層を形成する段階と、
前記シリコンエピタキシャル層上にコバルト層を形成する段階と、
前記シリコンエピタキシャル層と前記コバルト層を反応させて前記コバルトシリサイド層を形成する段階と、を更に具備することを特徴とする請求項4記載のメモリ素子の製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2003-0048079A KR100511045B1 (ko) | 2003-07-14 | 2003-07-14 | 리세스된 게이트 전극을 갖는 반도체 소자의 집적방법 |
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JP2005039270A JP2005039270A (ja) | 2005-02-10 |
JP4477953B2 true JP4477953B2 (ja) | 2010-06-09 |
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JP2004205215A Expired - Lifetime JP4477953B2 (ja) | 2003-07-14 | 2004-07-12 | メモリ素子の製造方法 |
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US (2) | US6939765B2 (ja) |
JP (1) | JP4477953B2 (ja) |
KR (1) | KR100511045B1 (ja) |
CN (1) | CN1577802A (ja) |
DE (1) | DE10359493B4 (ja) |
GB (1) | GB2404083B (ja) |
TW (1) | TWI278969B (ja) |
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- 2003-08-29 TW TW092123866A patent/TWI278969B/zh not_active IP Right Cessation
- 2003-09-24 CN CNA031597610A patent/CN1577802A/zh active Pending
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CN1577802A (zh) | 2005-02-09 |
KR100511045B1 (ko) | 2005-08-30 |
US20050275014A1 (en) | 2005-12-15 |
US6939765B2 (en) | 2005-09-06 |
US20050014338A1 (en) | 2005-01-20 |
TW200503179A (en) | 2005-01-16 |
GB2404083B (en) | 2005-11-02 |
DE10359493A1 (de) | 2005-02-17 |
GB0327716D0 (en) | 2003-12-31 |
TWI278969B (en) | 2007-04-11 |
JP2005039270A (ja) | 2005-02-10 |
KR20050008223A (ko) | 2005-01-21 |
DE10359493B4 (de) | 2010-05-12 |
GB2404083A (en) | 2005-01-19 |
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