JP2004193563A - Mimキャパシタを有する半導体素子 - Google Patents
Mimキャパシタを有する半導体素子 Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 136
- 239000004065 semiconductor Substances 0.000 title claims abstract description 94
- 239000010410 layer Substances 0.000 claims abstract description 187
- 239000011229 interlayer Substances 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 239000002131 composite material Substances 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 8
- 150000004767 nitrides Chemical class 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 62
- 230000003071 parasitic effect Effects 0.000 abstract description 11
- 230000009977 dual effect Effects 0.000 description 14
- 238000005229 chemical vapour deposition Methods 0.000 description 11
- 238000005240 physical vapour deposition Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000000231 atomic layer deposition Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000001259 photo etching Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910004200 TaSiN Inorganic materials 0.000 description 4
- 229910008482 TiSiN Inorganic materials 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 229910008807 WSiN Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910020177 SiOF Inorganic materials 0.000 description 3
- 229910020175 SiOH Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 238000000151 deposition Methods 0.000 description 2
- 229920000592 inorganic polymer Polymers 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 239000005380 borophosphosilicate glass Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003209 poly(hydridosilsesquioxane) Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
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- 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
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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- H01—ELECTRIC ELEMENTS
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/5222—Capacitive arrangements or effects of, or between wiring layers
- H01L23/5223—Capacitor integral with wiring layers
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- H01—ELECTRIC ELEMENTS
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- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
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- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0688—Integrated circuits having a three-dimensional layout
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76895—Local interconnects; Local pads, as exemplified by patent document EP0896365
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- H—ELECTRICITY
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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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
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/033—Making the capacitor or connections thereto the capacitor extending over the transistor
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- Condensed Matter Physics & Semiconductors (AREA)
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
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Abstract
【解決手段】 本発明は半導体基板上に形成され、下部電極及び誘電体膜及び上部電極で構成されたMIMキャパシタを含む。前記MIMキャパシタの上部電極及び下部電極上には前記MIMキャパシタの上部電極上に第1ビアホールを有する第1層間絶縁膜及び第2ビアホールを有する第2層間絶縁膜が形成されている。前記第2層間絶縁膜上で第1ビアホール及び第2ビアホールを通じて前記上部電極と連結される配線層が形成されてMIMキャパシタの下部電極及び配線層間の垂直距離を大きくする。このように、本発明の半導体素子は配線方法を変更することによって寄生キャパシタの影響を最小化して安定したMIMキャパシタ特性を有する。
【選択図】 図3
Description
103 トレンチ分離領域
105 アクティブ領域
107 ゲート絶縁膜
109 ゲート
111 ソース
113 ドレーン
115 第1絶縁膜
117 コンタクトホール
119 導電体パターン
121 第1ビアホール
122 第1トレンチ
123 第2絶縁膜
125 第3絶縁膜
127 MIMキャパシタの下部電極
129 第1配線層
131 誘電体膜
133 MIMキャパシタの上部電極
135 第4絶縁膜パターン
137 第5絶縁膜
139 第6絶縁膜
141 第1層間絶縁膜
143 第2ビアホール
144 第2トレンチ
145 ランディングパッド型の独立配線層
149 第2配線層
151 第7絶縁膜
153 第8絶縁膜
155 第2層間絶縁膜
157 第3ビアホール
159 第3トレンチ
161 第3配線層
Claims (24)
- 半導体基板上に形成され、下部電極、誘電体膜及び上部電極で構成されたMIMキャパシタと、
前記MIMキャパシタの前記上部電極及び前記下部電極上に形成され、前記MIMキャパシタの前記上部電極上に第1ビアホールを有する第1層間絶縁膜と、
前記第1ビアホール内に形成されたランディングパッド型の独立配線層と、
前記MIMキャパシタの上部の前記ランディングパッド型の独立配線層を露出する第2ビアホールを有する第2層間絶縁膜と、
前記第2ビアホール内に形成され、前記ランディングパッド型の独立配線層を通じて前記MIMキャパシタの前記上部電極と連結される配線層と、
を含んでなることを特徴とする半導体素子。 - 前記MIMキャパシタの前記下部電極は前記半導体基板上に形成されたドレーンと接触していることを特徴とする請求項1に記載の半導体素子。
- 前記上部電極は前記下部電極を完全に覆いかぶせる形態で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。
- 前記上部電極の下部に形成された前記誘電体膜は、前記上部電極が形成された領域以外に形成された前記誘電体膜よりも厚いことを特徴とする請求項1に記載の半導体素子。
- 前記上部電極が形成された領域以外に形成された前記誘電体膜の厚さは0.01〜0.1μmであることを特徴とする請求項4に記載の半導体素子。
- 前記上部電極上には酸化膜、窒化膜、FSG膜、OSG膜、及びSiC膜のうち何れか一つの膜またはこの複合膜よりなる絶縁膜パターンが形成されていることを特徴とする請求項1に記載の半導体素子。
- 前記絶縁膜パターンは前記上部電極が形成された領域以外の部分には形成されていないことを特徴とする請求項6に記載の半導体素子。
- 前記第1層間絶縁膜は前記第1ビアホールよりも大きく、前記第1ビアホールよりも低い深さで形成されたトレンチをさらに有することを特徴とする請求項1に記載の半導体素子。
- 前記第2層間絶縁膜は前記第2ビアホールよりも大きく、前記第2ビアホールよりも低い深さで形成されたトレンチをさらに有することを特徴とする請求項1に記載の半導体素子。
- 前記ランディングパッド型の独立配線層は前記第1層間絶縁膜と同じ高さに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。
- 前記MIMキャパシタの上部電極と連結される前記配線層は前記第2層間絶縁膜と同じ高さに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。
- 前記ランディングパッド型の独立配線層は相互独立した複数の配線よりなることを特徴とする請求項1に記載の半導体素子。
- 前記ランディングパッド型の独立配線層の上部の幅が下部の幅よりも広いことを特徴とする請求項1に記載の半導体素子。
- 半導体基板上に形成され、前記半導体基板に形成された不純物領域と接触するMIMキャパシタの下部電極と、
前記下部電極上に形成された誘電体膜と、
前記誘電体膜上に形成されたMIMキャパシタの上部電極と、
前記MIMキャパシタの上部電極上に形成された絶縁膜パターンと、
前記絶縁膜パターン上に形成され、前記MIMキャパシタの前記上部電極上に第1ビアホールを有する第1層間絶縁膜と、
前記第1ビアホール内に形成されたランディングパッド型の独立配線層と、
前記MIMキャパシタの上部の前記ランディングパッド型の独立配線層を露出する第2ビアホールを有する第2層間絶縁膜と、
前記第2ビアホール内に形成され、前記ランディングパッド型の独立配線層を通じて前記MIMキャパシタの前記上部電極と連結される配線層と、
を含んでなることを特徴とする半導体素子。 - 前記MIMキャパシタの上部電極の下部に形成された前記誘電体膜は、前記上部電極が形成された領域以外に形成された前記誘電体膜よりも厚いことを特徴とする請求項14に記載の半導体素子。
- 前記上部電極は前記下部電極を完全に覆いかぶせる形態で形成されることを特徴とする請求項14に記載の半導体素子。
- 前記上部電極が形成された領域以外に形成された前記誘電体膜の厚さは0.01〜0.1μmであることを特徴とする請求項14に記載の半導体素子。
- 前記上部電極上には酸化膜、窒化膜、FSG膜、OSG膜、及びSiC膜のうち何れか一つの膜またはこの複合膜よりなる絶縁膜パターンが形成されていることを特徴とする請求項14に記載の半導体素子。
- 前記ランディングパッド型の独立配線層は相互独立した複数の配線よりなることを特徴とする請求項14に記載の半導体素子。
- 半導体基板上に形成され、前記半導体基板に形成された不純物領域と接触するMIMキャパシタの下部電極と、
前記下部電極を含んだ前記半導体基板上に形成され、前記下部電極上に形成された厚さがそれ以外の地域に形成された厚さよりも厚く形成された誘電体膜と、
前記誘電体膜が厚い領域に形成されたMIMキャパシタの上部電極と、
前記MIMキャパシタの上部電極上に形成された絶縁膜パターンと、
前記絶縁膜パターン上に形成され、前記MIMキャパシタの前記上部電極上に第1ビアホールを有する第1層間絶縁膜と、
前記第1ビアホール内に形成されたランディングパッド型の独立配線層と、
前記MIMキャパシタの上部の前記ランディングパッド型の独立配線層を露出する第2ビアホールを有する第2層間絶縁膜と、
前記第2ビアホール内に形成され、前記ランディングパッド型の独立配線層を通じて前記MIMキャパシタの前記上部電極と連結される配線層と、
を含んでなることを特徴とする半導体素子。 - 前記上部電極は前記下部電極を完全に覆いかぶせる形態で形成されることを特徴とする請求項20に記載の半導体素子。
- 前記上部電極が形成された領域以外に形成された前記誘電体膜の厚さは0.01〜0.1μmであることを特徴とする請求項20に記載の半導体素子。
- 前記ランディングパッド型の独立配線層は相互独立した複数の配線よりなることを特徴とする請求項20に記載の半導体素子。
- 半導体基板上に形成され、前記半導体基板に形成された不純物領域と接触するMIMキャパシタの下部電極と、
前記下部電極を含んだ前記半導体基板上に形成され、相異なる厚さを有する領域を含む誘電体膜と、
前記MIMキャパシタの下部電極上に前記誘電体膜の厚い部分を介在して形成され、前記MIMキャパシタの下部電極を完全に覆いかぶせる形態で形成されたMIMキャパシタの上部電極と、
前記MIMキャパシタの上部電極上にのみ限定的に形成された絶縁膜パターンと、
前記絶縁膜パターン上に形成され、前記MIMキャパシタの前記上部電極上に多数の第1ビアホールを有する第1層間絶縁膜と、
前記第1ビアホール内に形成された多数のランディングパッド型の独立配線層と、
前記MIMキャパシタの上部の前記多数のランディングパッド型の独立配線層を露出する多数の第2ビアホールを有する第2層間絶縁膜と、
前記多数の第2ビアホール内に形成され、前記多数のランディングパッド型の独立配線層を通じて前記MIMキャパシタの前記上部電極と連結される配線層と、
を含んでなることを特徴とする半導体素子。
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KR10-2002-0078905A KR100505658B1 (ko) | 2002-12-11 | 2002-12-11 | MIM(Metal-Insulator-Metal)커패시터를 갖는 반도체 소자 |
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JP2004193563A true JP2004193563A (ja) | 2004-07-08 |
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US (3) | US6940114B2 (ja) |
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KR (1) | KR100505658B1 (ja) |
CN (1) | CN100385659C (ja) |
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Cited By (2)
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JP2006319174A (ja) * | 2005-05-13 | 2006-11-24 | Renesas Technology Corp | 半導体装置およびその製造方法 |
JP2021077799A (ja) * | 2019-11-12 | 2021-05-20 | ローム株式会社 | 電子部品 |
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Also Published As
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US20070145452A1 (en) | 2007-06-28 |
CN100385659C (zh) | 2008-04-30 |
TW200410340A (en) | 2004-06-16 |
KR100505658B1 (ko) | 2005-08-03 |
US7679123B2 (en) | 2010-03-16 |
CN1507045A (zh) | 2004-06-23 |
US20040113190A1 (en) | 2004-06-17 |
TWI236066B (en) | 2005-07-11 |
DE10351875A1 (de) | 2004-07-15 |
DE10351875B4 (de) | 2009-01-29 |
US7208791B2 (en) | 2007-04-24 |
US20050247968A1 (en) | 2005-11-10 |
US6940114B2 (en) | 2005-09-06 |
KR20040051069A (ko) | 2004-06-18 |
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