JP4362127B2 - 半導体素子の形成方法 - Google Patents
半導体素子の形成方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 63
- 239000004065 semiconductor Substances 0.000 title claims description 23
- 239000003990 capacitor Substances 0.000 claims description 40
- 125000006850 spacer group Chemical group 0.000 claims description 39
- 239000000758 substrate Substances 0.000 claims description 24
- 239000004020 conductor Substances 0.000 claims description 12
- 238000000059 patterning Methods 0.000 claims description 11
- 239000003989 dielectric material Substances 0.000 claims description 10
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 8
- 230000006870 function Effects 0.000 claims description 5
- 238000000206 photolithography Methods 0.000 claims description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- 229920005591 polysilicon Polymers 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 1
- 229910021342 tungsten silicide Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- 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
- H10B12/485—Bit line contacts
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66613—Lateral single gate silicon transistors with a gate recessing step, e.g. using local oxidation
- H01L29/66621—Lateral single gate silicon transistors with a gate recessing step, e.g. using local oxidation using etching to form a recess at the gate location
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7833—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
- H01L29/7834—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's with a non-planar structure, e.g. the gate or the source or the drain being non-planar
-
- 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
- H10B12/34—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells 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
- H10B12/37—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells the capacitor 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
Description
102 深溝コンデンサ素子
104 上部
106 パッド層
108 誘電体キャップ層
110 凹型溝
112 凹型トランジスタ(凹型ゲート)
114 チャネル域
116 ゲート誘電体層
118 凹型ゲート電極
120 突出部
122 外拡散域
124 スペーサ
126 空間(環状空隙)
128 ソース/ドレイン域
130 埋込部
132 平行浅溝
134a、134b パターン化した埋込部
136 活動領域
Claims (26)
- 凹型ゲートと深溝コンデンサ素子(deep trench capacitor devices)とを有し、前記凹型ゲートの突出部と前記深溝コンデンサ素子の上部とが露呈される基板を提供するステップと、
前記上部と前記突出部との側壁にスペーサを形成するステップと、
前記スペーサの間の間隙に導電材料の埋込部を形成するステップと、
前記基板、前記スペーサおよび前記埋込部をパターン化し、平行浅溝を形成し、活動領域を定義するステップと、
前記浅溝に誘電材料層を形成するステップと、を含み、
前記パターン化と定義のステップにおいて、前記パターン化されたスペーサと前記パターン化された埋込部は前記深溝コンデンサ素子と前記凹型ゲートとの側辺で別々の領域に分けられ、前記パターン化された埋込部は埋込コンタクトとして機能する
ことを特徴とする半導体素子の形成方法。 - 前記スペーサは、窒化ケイ素(SiN)を含むことを特徴とする請求項1に記載の半導体素子の形成方法。
- 前記導電材料は、ポリシリコンを含むことを特徴とする請求項1に記載の半導体素子の形成方法。
- 前記スペーサは、前記深溝コンデンサ素子の上部を更に囲むことを特徴とする請求項1に記載の半導体素子の形成方法。
- 前記誘電材料は、酸化物を含むことを特徴とする請求項1に記載の半導体素子の形成方法。
- 前記基板、前記スペーサおよび前記埋込部のパターン化は、フォトリソグラフィープロセスとエッチングプロセスとを含むことを特徴とする請求項1に記載の半導体素子の形成方法。
- 前記平行浅溝は、前記深溝コンデンサ素子と前記凹型ゲートとのパターン化した端に隣接して形成されることを特徴とする請求項1に記載の半導体素子の形成方法。
- 前記埋込コンタクトは、ビット線コンタクトを含むことを特徴とする請求項1に記載の半導体素子の形成方法。
- 凹型ゲートと深溝コンデンサ素子(deep trench capacitor devices)とを有し、前記凹型ゲートの突出部と前記深溝コンデンサ素子の上部とが露呈される基板を提供するステップと、
前記上部と前記突出部との側壁にスペーサを形成するステップと、
前記基板の上に導電材料層を形成するステップと、
前記スペーサの間の間隙に埋込部を形成するために前記導電材料層を平坦化するステップと、
前記基板、前記スペーサ、前記埋込部、前記深溝コンデンサ素子および前記凹型ゲートをパターン化し、平行浅溝を形成し、活動領域を定義するステップと、
前記浅溝に誘電材料層を形成するステップと、を含み、
前記パターン化と定義のステップにおいて、前記パターン化されたスペーサと前記パターン化された埋込部は前記パターン化された深溝コンデンサ素子と前記パターン化された凹型ゲートとの側辺で別々の領域に分けられ、前記パターン化された埋込部は埋込コンタクトとして機能する
ことを特徴とする半導体素子の形成方法。 - 前記スペーサは、窒化ケイ素(SiN)を含むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記導電材料は、ポリシリコンを含むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記平坦化の方法は、化学機械研磨(CMP)、ブランケット(blanket)エッチバックまたは凹型(recess)エッチングを含むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記スペーサは、前記深溝コンデンサ素子の上部を更に囲むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記誘電材料は、酸化物を含むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記基板のパターン化は、フォトリソグラフィープロセスとエッチングプロセスとを含むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記平行浅溝は、前記深溝コンデンサ素子と前記凹型ゲートとのパターン化した端に隣接して形成されることを特徴とする請求項9に記載の半導体素子の形成方法。
- 前記埋込コンタクトは、ビット線コンタクトを含むことを特徴とする請求項9に記載の半導体素子の形成方法。
- 凹型ゲートと深溝コンデンサ素子(deep trench capacitor devices)とを有し、前記凹型ゲートの突出部と前記深溝コンデンサ素子の上部とが露呈される基板を提供するステップと、
前記上部と前記突出部の側壁にスペーサを形成するステップと、
前記基板の上に導電材料層を形成するステップと、
前記スペーサの間の間隙に埋込部を形成するために前記導電材料層、前記スペーサ、前記深溝コンデンサ素子および前記凹型ゲートを平坦化し、前記深溝コンデンサ素子の前記上部は、前記埋込部によって囲まれるステップと、
前記基板、前記スペーサ、前記埋込部、前記深溝コンデンサ素子および前記凹型ゲートをパターン化し、平行浅溝を形成し、活動領域を定義するステップと、
前記浅溝に誘電材料層を形成するステップと、を含み
前記パターン化と定義のステップにおいて、前記パターン化されたスペーサと前記パターン化された埋込部は前記パターン化された深溝コンデンサ素子と前記パターン化された凹型ゲートとの側辺で別々の領域に分けられ、前記パターン化された埋込部は埋込コンタクトとして機能する
ことを特徴とする半導体素子の形成方法。 - 前記スペーサは、窒化ケイ素(SiN)を含むことを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記導電材料は、ポリシリコンを含むことを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記平坦化の方法は、化学機械研磨(CMP)、ブランケット(blanket)エッチバックまたは凹型(recess)エッチングを含むことを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記スペーサは、前記深溝コンデンサ素子の上部を更に囲むことを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記誘電材料は、酸化物を含むことを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記基板のパターン化は、フォトリソグラフィープロセスとエッチングプロセスとを含むことを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記平行浅溝は、前記深溝コンデンサ素子と前記凹型ゲートとのパターン化した端に隣接して形成されることを特徴とする請求項18に記載の半導体素子の形成方法。
- 前記埋込コンタクトは、ビット線コンタクトを含むことを特徴とする請求項18に記載の半導体素子の形成方法。
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US11/145,585 US7429509B2 (en) | 2005-05-31 | 2005-06-06 | Method for forming a semiconductor device |
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US (1) | US7429509B2 (ja) |
EP (1) | EP1732125B1 (ja) |
JP (1) | JP4362127B2 (ja) |
KR (1) | KR100740949B1 (ja) |
CN (1) | CN100407405C (ja) |
TW (1) | TWI300973B (ja) |
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TWI419266B (zh) * | 2007-07-03 | 2013-12-11 | Nanya Technology Corp | 半導體裝置之製造方法 |
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- 2006-05-29 EP EP06011004.6A patent/EP1732125B1/en active Active
- 2006-05-30 KR KR1020060048580A patent/KR100740949B1/ko active IP Right Grant
- 2006-06-02 CN CN2006100923958A patent/CN100407405C/zh active Active
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TW200644174A (en) | 2006-12-16 |
JP2006344962A (ja) | 2006-12-21 |
KR100740949B1 (ko) | 2007-07-19 |
US20060270150A1 (en) | 2006-11-30 |
EP1732125A3 (en) | 2009-04-15 |
US7429509B2 (en) | 2008-09-30 |
KR20060127747A (ko) | 2006-12-13 |
EP1732125B1 (en) | 2013-04-24 |
EP1732125A2 (en) | 2006-12-13 |
CN1877814A (zh) | 2006-12-13 |
TWI300973B (en) | 2008-09-11 |
CN100407405C (zh) | 2008-07-30 |
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