JP6981601B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 50
- 238000004519 manufacturing process Methods 0.000 title claims description 32
- 239000010408 film Substances 0.000 claims description 211
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 57
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 57
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 40
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 40
- 239000003990 capacitor Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 28
- 230000001681 protective effect Effects 0.000 claims description 20
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 18
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 10
- 238000001039 wet etching Methods 0.000 claims description 10
- 238000002161 passivation Methods 0.000 claims description 9
- 238000007740 vapor deposition Methods 0.000 claims description 9
- 238000001312 dry etching Methods 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 238000007736 thin film deposition technique Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 47
- 238000005530 etching Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 239000010931 gold Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 8
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 6
- 230000005669 field effect Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 150000003608 titanium Chemical class 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 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
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000005533 two-dimensional electron gas Effects 0.000 description 1
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Description
Claims (5)
- 基板上に形成されるトランジスタを覆う絶縁膜上に、前記トランジスタのゲートに前記絶縁膜を介して電気的に結合するフィールドプレートを形成する工程と、
前記絶縁膜及び前記フィールドプレートを覆う窒化ケイ素保護膜を形成する工程と、
前記窒化ケイ素保護膜上に酸化ケイ素下地膜を形成する工程と、
前記酸化ケイ素下地膜上に、順に積層される第1の電極、誘電体膜及び第2の電極を有するMIMキャパシタを形成する工程と、
を備え、
前記MIMキャパシタを形成する工程は、前記誘電体膜を形成した後、前記フィールドプレート上の前記酸化ケイ素下地膜をウェットエッチングする工程を有する、
半導体装置の製造方法。 - 前記酸化ケイ素下地膜をウェットエッチングする工程後、前記誘電体膜の端部が、残存する前記酸化ケイ素下地膜に対する庇となる、請求項1に記載の半導体装置の製造方法。
- 前記MIMキャパシタを形成する工程は、
蒸着法及びリフトオフによって、前記酸化ケイ素下地膜上に第1の電極を形成する工程と、
プラズマCVD法によって、前記第1の電極上に窒化ケイ素膜を形成する工程と、
前記MIMキャパシタが形成される領域以外に位置する前記窒化ケイ素膜を露出するレジストパターンを形成する工程と、
フッ素系ガスを用いたドライエッチングにより、前記レジストパターンから露出する前記窒化ケイ素膜を除去し、前記誘電体膜を形成する工程と、
前記レジストパターン、及び、前記誘電体膜から露出する前記酸化ケイ素下地膜を、フッ酸系溶液によりウェットエッチングする工程と、を有する請求項1又は2に記載の半導体装置の製造方法。 - 前記MIMキャパシタを形成する工程は、前記ウェットエッチング前、蒸着法及びリフトオフによって、前記第2の電極を形成する工程を有する、請求項1〜3のいずれか一項に記載の半導体装置の製造方法。
- 前記トランジスタの形成完了前に、前記基板を覆うパッシベーション膜を形成する工程をさらに備える、請求項1〜4のいずれか一項に記載の半導体装置の製造方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018102475A JP6981601B2 (ja) | 2018-05-29 | 2018-05-29 | 半導体装置の製造方法 |
CN202011327407.7A CN112599417B (zh) | 2018-05-29 | 2019-05-27 | 半导体器件 |
TW108118196A TWI776061B (zh) | 2018-05-29 | 2019-05-27 | 半導體裝置之製造方法 |
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