JP6284421B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6284421B2 JP6284421B2 JP2014097941A JP2014097941A JP6284421B2 JP 6284421 B2 JP6284421 B2 JP 6284421B2 JP 2014097941 A JP2014097941 A JP 2014097941A JP 2014097941 A JP2014097941 A JP 2014097941A JP 6284421 B2 JP6284421 B2 JP 6284421B2
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- 239000004065 semiconductor Substances 0.000 title claims description 113
- 239000000758 substrate Substances 0.000 claims description 43
- 239000010410 layer Substances 0.000 claims description 38
- 239000011229 interlayer Substances 0.000 claims description 26
- 239000004020 conductor Substances 0.000 claims description 25
- 239000002344 surface layer Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 description 95
- 238000012986 modification Methods 0.000 description 95
- 210000000746 body region Anatomy 0.000 description 21
- 230000015556 catabolic process Effects 0.000 description 16
- 239000013256 coordination polymer Substances 0.000 description 16
- 229910021332 silicide Inorganic materials 0.000 description 14
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000012535 impurity Substances 0.000 description 11
- 208000036252 interstitial lung disease 1 Diseases 0.000 description 10
- 101000603877 Homo sapiens Nuclear receptor subfamily 1 group I member 2 Proteins 0.000 description 9
- 102100038494 Nuclear receptor subfamily 1 group I member 2 Human genes 0.000 description 9
- ROGUAPYLUCHQGK-UHFFFAOYSA-N 1-piperazinecarboxamide, 4-(3-chloro-2-pyridinyl)-n-[4-(1,1-dimethylethyl)phenyl]- Chemical compound C1=CC(C(C)(C)C)=CC=C1NC(=O)N1CCN(C=2C(=CC=CN=2)Cl)CC1 ROGUAPYLUCHQGK-UHFFFAOYSA-N 0.000 description 8
- 230000005684 electric field Effects 0.000 description 7
- 208000036971 interstitial lung disease 2 Diseases 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 101100533625 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) drc-4 gene Proteins 0.000 description 4
- 101150090425 SLD1 gene Proteins 0.000 description 4
- 101150033482 SLD2 gene Proteins 0.000 description 4
- 101100533627 Schizosaccharomyces pombe (strain 972 / ATCC 24843) drc1 gene Proteins 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Classifications
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- Engineering & Computer Science (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
図15は、変形例1に係る半導体装置SDを示す平面図であり、実施形態の図1に対応する。本変形例に係る半導体装置SDは、開口OPのドレイン領域DRR側の縁部がドレイン領域DRRと繋がっている点を除いて、実施形態に係る半導体装置SDと同様の構成である。言い換えると、本変形例では、開口OPのドレイン領域DRRの縁部がフィールド酸化膜DFOXを貫いてドレイン領域DRRに達している。本変形例においても、ゲート電極GEは、ドレイン領域DRR側の縁部の全体がフィールド酸化膜DFOXに乗り上げるようになる。このため、本変形例においても実施形態と同様の効果を得ることができると考えられる。
図16は、変形例2に係る半導体装置SDを示す平面図であり、実施形態の図1に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、実施形態に係る半導体装置SDと同様の構成である。
図17は、変形例3に係る半導体装置SDを示す平面図であり、実施形態の図1に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、実施形態に係る半導体装置SDと同様の構成である。
図18は、変形例4に係る半導体装置SDを示す平面図であり、変形例3の図17に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、変形例3に係る半導体装置SDと同様の構成である。
図19は、変形例5に係る半導体装置SDを示す平面図であり、変形例4の図18に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、変形例4に係る半導体装置SDと同様の構成である。
図20は、変形例6に係る半導体装置SDを示す平面図であり、変形例5の図19に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、変形例5に係る半導体装置SDと同様の構成である。
図21は、変形例7に係る半導体装置SDを示す平面図であり、実施形態の図1に対応する。図22は、図21のA−A´断面図であり、実施形態の図2に対応する。図23は、図21のB−B´断面図であり、実施形態の図3に対応する。図24は、図21のC−C´断面図であり、実施形態の図4に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、実施形態に係る半導体装置SDと同様の構成である。
図25は、変形例8に係る半導体装置SDを示す平面図であり、変形例7の図21に対応する。本変形例に係る半導体装置SDは、以下の点を除いて、変形例7に係る半導体装置SDと同様の構成である。
図26は、変形例9に係る半導体装置SDを示す断面図であり、実施形態の図2に対応する。本変形例に係る半導体装置SDは、基板SUBのエピタキシャル層EPIの導電型が第2導電型(n型)である点を除いて、実施形態に係る半導体装置SDと同様の構成である。本変形例においても、実施形態と同様の効果を得ることができる。
図27は、変形例10に係る半導体装置SDを示す断面図であり、実施形態の図2に対応する。本変形例に係る半導体装置SDは、実施形態に係る第2導電型埋込領域NBLに代わって第1導電型埋込領域PBLが形成されている点を除いて、実施形態に係る半導体装置SDと同様の構成である。言い換えると、本変形例では、基板SUBの埋込領域の導電型が実施形態と反対になっている。本変形例においても、実施形態と同様の効果を得ることができる。
図28は、変形例11に係る半導体装置SDを示す断面図であり、実施形態の図2に対応する。本変形例に係る半導体装置SDは、基板SUBがSOI(Silicon on Insulator)基板である点を除いて、実施形態に係る半導体装置SDと同様の構成である。具体的には、本変形例に係る基板SUBは、半導体基板SSUB、埋込酸化膜BOX、及びエピタキシャル層EPIがこの順に積層している。本変形例においても、実施形態と同様の効果を得ることができる。
図29は、変形例12に係る半導体装置SDを示す断面図であり、実施形態の図2に対応する。本変形例に係る半導体装置SDは、第1導電型ボディ領域PBDの下に第1導電型埋込領域BPBLが形成されている点を除いて、実施形態に係る半導体装置SDと同様の構成である。
図30は、変形例13に係る半導体装置SDを示す断面図であり、変形例12の図29に対応する。本変形例に係る半導体装置SDは、第1導電型埋込領域BPBLのドレイン領域DRR側の端部が平面視でドレイン領域DRRと重なる領域にまで達している点を除いて、実施形態に係る半導体装置SDと同様の構成である。本変形例においては、第1導電型埋込領域BPBLは、例えば、基板SUBの全体に形成されている。本変形例によれば、変形例12と比較して、耐圧をさらに高いものにすることができる。
図31は、変形例14に係る半導体装置SDを示す断面図であり、変形例11に係る図28に対応する。本変形例に係る半導体装置SDは、基板SUBのエピタキシャル層EPIの導電型が第2導電型(n型)である点を除いて、変形例11に係る半導体装置SDと同様の構成である。本変形例においても、変形例11と同様の効果を得ることができる。
BCTC コンタクト
BOX 埋込酸化膜
BPBL 第1導電型埋込領域
CF1 導電膜
CF2 導電膜
CP 導体パターン
CP1 延伸部
CP2 突出部
DCTC コンタクト
DFOX フィールド酸化膜
DRR ドレイン領域
EPI エピタキシャル層
FOX フィールド酸化膜
GE ゲート電極
GI ゲート絶縁膜
GI1 絶縁膜
ILD1 層間絶縁膜
ILD2 層間絶縁膜
LDS LDS領域
NBL 第2導電型埋込領域
NDR 第2導電型ドリフト領域
ONR1 幅狭部
ONR2 幅狭部
OP 開口
OWD 幅広部
PBD 第1導電型ボディ領域
PBL 第1導電型埋込領域
PNR 幅狭部
PP 突出部
PS ポリシリコン膜
PWD1 幅広部
PWD2 幅広部
RS1 レジスト膜
RS2 レジスト膜
RS3 レジスト膜
SB シリサイドブロック膜
SCTC コンタクト
SD 半導体装置
SLD1 シリサイド膜
SLD2 シリサイド膜
SOR ソース領域
SSUB 半導体基板
SUB 基板
SW サイドウォール
TRE 溝
Claims (7)
- 基板と、
前記基板に形成された半導体層と、
前記半導体層に形成された第1導電型領域と、
前記半導体層に形成され、平面視で第1方向に前記第1導電型領域と並んで配置された第2導電型領域と、
前記半導体層上に位置し、平面視で前記第1導電型領域から前記第2導電型領域にかけて形成され、平面視で前記第1方向と直交する第2方向に延伸しているゲート電極と、
前記第1導電型領域に形成されたソース領域と、
前記第2導電型領域に形成され、前記ゲート電極から離間しているドレイン領域と、
前記第2導電型領域の表層に形成され、前記ゲート電極の下部から前記ドレイン領域に亘って位置しているフィールド絶縁膜と、
前記ソース領域側から前記ドレイン領域側に向かって前記ゲート電極の側面から突出し、平面視で前記第2方向に沿って並べられた複数の突出部と、
前記フィールド絶縁膜に形成され、前記第1方向から見て各々が互いに隣り合う前記突出部の間に位置し、前記第2方向に沿って前記複数の突出部と交互に並んだ複数の開口と、
を備え、
前記開口のうちの前記ドレイン領域側の縁部が前記ドレイン領域よりも前記ソース領域側に位置しており、
前記開口のうちの前記ソース領域側の縁部が前記ゲート電極の前記側面よりも前記ドレイン領域側に位置しており、
平面視で前記開口に比して前記ドレイン領域側に位置し、互いに隣り合う前記突出部を繋げている導電膜をさらに備える半導体装置。 - 請求項1に記載の半導体装置において、
前記開口は、
前記ソース領域側に位置する開口ソース側部と、
前記開口ソース側部に比して前記ドレイン領域側で前記開口ソース側部に隣り合う開口第1隣接部と、
前記ドレイン領域側に位置する開口ドレイン側部と、
前記開口ドレイン側部に比して前記ソース領域側で前記開口ドレイン側部に隣り合う開口第2隣接部と、
を含み、
前記開口ソース側部が前記開口第1隣接部よりも前記第2方向に狭い幅を有しており、
前記開口ドレイン側部が前記開口第2隣接部よりも前記第2方向に狭い幅を有している半導体装置。 - 請求項2に記載の半導体装置において、
前記突出部は、
前記開口第1隣接部に比して前記ソース領域側に位置する突出ソース側部と、
前記突出ソース側部に比して前記ドレイン領域側で前記突出ソース側部に隣り合う突出第1隣接部と、
を含み、
前記突出ソース側部が前記突出第1隣接部よりも前記第2方向に広い幅を有している半導体装置。 - 請求項3に記載の半導体装置において、
前記突出部は、
前記開口第2隣接部に比して前記ドレイン領域側に位置する突出ドレイン側部と、
前記突出ドレイン側部に比して前記ソース領域側で前記突出ドレイン側部に隣り合う突出第2隣接部と、
を含み、
前記突出ドレイン側部が前記突出第2隣接部よりも前記第2方向に広い幅を有している半導体装置。 - 請求項4に記載の半導体装置において、
前記開口は、前記ドレイン領域側の縁部が前記ドレイン領域よりも前記ソース領域側に位置しており、
平面視で前記開口に比して前記ドレイン領域側に位置し、互いに隣り合う前記突出部を繋げている導電膜をさらに備える半導体装置。 - 請求項1に記載の半導体装置において、
前記基板上に形成された層間絶縁膜と、
前記層間絶縁膜上に形成された導体パターンと、
前記層間絶縁膜を貫通し、前記導体パターンと前記ソース領域を接続しているコンタクトと、
をさらに備え、
前記導体パターンは、
前記ゲート電極の上方に位置し、平面視で前記第2方向に延伸している導体延伸部と、
平面視で前記ソース領域側から前記ドレイン領域側に向かって前記導体延伸部の側面から突出し、各々が前記複数の突出部それぞれに対応して設けられ、平面視で前記第2方向に沿って並べられた複数の導体突出部と、
を含み、
前記導体延伸部及び前記複数の導体突出部が平面視で前記ゲート電極の前記ドレイン領域側及び前記複数の突出部を内側に含んでいる半導体装置。 - 請求項6に記載の半導体装置において、
互いに隣り合う前記導体突出部の前記ドレイン領域側の部分を繋げる導電膜をさらに備える半導体装置。
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TWI683437B (zh) * | 2016-12-30 | 2020-01-21 | 新唐科技股份有限公司 | 高壓半導體裝置 |
JP6783708B2 (ja) * | 2017-06-15 | 2020-11-11 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
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US10424647B2 (en) * | 2017-10-19 | 2019-09-24 | Texas Instruments Incorporated | Transistors having gates with a lift-up region |
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