JPWO2019058922A1 - キャパシタ - Google Patents
キャパシタ Download PDFInfo
- Publication number
- JPWO2019058922A1 JPWO2019058922A1 JP2019543516A JP2019543516A JPWO2019058922A1 JP WO2019058922 A1 JPWO2019058922 A1 JP WO2019058922A1 JP 2019543516 A JP2019543516 A JP 2019543516A JP 2019543516 A JP2019543516 A JP 2019543516A JP WO2019058922 A1 JPWO2019058922 A1 JP WO2019058922A1
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- Japan
- Prior art keywords
- region
- main surface
- capacitor
- bonding pad
- trench portions
- Prior art date
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- 239000003990 capacitor Substances 0.000 title claims description 108
- 239000004020 conductor Substances 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 26
- 239000010410 layer Substances 0.000 description 38
- 239000012212 insulator Substances 0.000 description 13
- 230000035882 stress Effects 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000003989 dielectric material Substances 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052719 titanium 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
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Abstract
Description
まず、図1及び図2を参照しつつ、本発明の第1実施形態に係るキャパシタ100の構成について説明する。図1は、第1実施形態に係るキャパシタの構成を概略的に示す平面図である。図2は、図1に示したキャパシタのII−II´線に沿った断面の構成を概略的に示す断面図である。
からなる誘電体材料によって形成されてもよい。
図3を参照しつつ、第2実施形態にかかるキャパシタ200の構成について説明する。図3は、第2実施形態に係るキャパシタの構成を概略的に示す平面図である。
図4を参照しつつ、第3実施形態にかかるキャパシタ300の構成について説明する。図4は、第3実施形態に係るキャパシタの構成を概略的に示す平面図である。
図5を参照しつつ、第4実施形態にかかるキャパシタ400の構成について説明する。図5は、第4実施形態に係るキャパシタの構成を概略的に示す平面図である。
図6を参照しつつ、第5実施形態にかかるキャパシタ500の構成について説明する。図6は、第5実施形態に係るキャパシタの構成を概略的に示す平面図である。
図7を参照しつつ、第6実施形態にかかるキャパシタ600の構成について説明する。図7は、第6実施形態に係るキャパシタの構成を概略的に示す平面図である。
図8を参照しつつ、第7実施形態にかかるキャパシタ700の構成について説明する。図8は、第7実施形態に係るキャパシタの構成を概略的に示す平面図である。
101…第1領域
102…第2領域
103…第3領域
110…基材
110A…第1主面
110B…第2主面
111…トレンチ部
120…第1導電体膜
130…誘電体膜
131…第1誘電体層
132…第2誘電体層
140…第2導電体膜
141…第1導電体層
142…第2導電体層
150…絶縁体膜
161…ボンディングパッド
162…ボンディングワイヤ
Claims (9)
- 互いに対向する第1主面及び第2主面を有し、前記第1主面側に複数のトレンチ部が形成された基材と、
前記基材の前記第1主面側で前記複数のトレンチ部の内側を含む領域に設けられた誘電体膜と、
前記複数のトレンチ部の内側を含む領域であって前記誘電体膜の上に設けられた導電体膜と、
前記導電体膜と電気的に接続されたボンディングパッドと、
を備え、
前記複数のトレンチ部は、前記基材の前記第1主面の法線方向から平面視したとき、前記ボンディングパッドの周囲の領域のうち、前記ボンディングパッドと電気的に接続するボンディングワイヤが延出される第1方向に沿った第1領域を避けて前記第1方向と交差する第2方向に沿った第2領域に設けられている、キャパシタ。 - 互いに対向する第1主面及び第2主面を有し、前記第1主面側に複数のトレンチ部が形成された基材と、
前記基材の前記第1主面側で前記複数のトレンチ部の内側を含む領域に設けられた誘電体膜と、
前記複数のトレンチ部の内側を含む領域であって前記誘電体膜の上に設けられた導電体膜と、
前記導電体膜と電気的に接続されたボンディングパッドと、
を備え、
前記複数のトレンチ部は、前記基材の前記第1主面の法線方向から平面視したとき、第1方向に沿って細長い開口形状を有している、キャパシタ。 - 前記複数のトレンチ部は、前記基材の前記第1主面の法線方向から平面視したとき、前記ボンディングパッドの周囲の領域のうち、前記ボンディングパッドと電気的に接続するボンディングワイヤが延出される前記第1方向に沿った第1領域の開口面積密度が、前記第1方向と交差する第2方向に沿った第2領域の開口面積密度よりも小さくなるように設けられている、
請求項2に記載のキャパシタ。 - 互いに対向する第1主面及び第2主面を有し、前記第1主面側に複数のトレンチ部が形成された基材と、
前記基材の前記第1主面側で前記複数のトレンチ部の内側を含む領域に設けられた誘電体膜と、
前記複数のトレンチ部の内側を含む領域であって前記誘電体膜の上に設けられた導電体膜と、
前記導電体膜と電気的に接続されたボンディングパッドと、
を備え、
前記複数のトレンチ部は、前記基材の前記第1主面の法線方向から平面視したとき、前記ボンディングパッドの周囲の領域のうち、前記ボンディングパッドと電気的に接続するボンディングワイヤが延出される第1方向に沿った第1領域の開口面積密度が、前記第1方向と交差する第2方向に沿った第2領域の開口面積密度よりも小さくなるように設けられている、キャパシタ。 - 前記複数のトレンチ部は、前記第1領域における数が前記第2領域における数よりも少ない、
請求項3又は4に記載のキャパシタ。 - 前記複数のトレンチ部は、前記第1領域における大きさが前記第2領域における大きさよりも小さい、
請求項3から5のいずれか1項に記載のキャパシタ。 - 前記複数のトレンチ部は、前記基材の前記第1主面の法線方向から平面視したとき、前記第1領域において前記ボンディングパッドに近いほど開口面積密度が小さい、
請求項3から6のいずれか1項に記載のキャパシタ。 - 前記複数のトレンチ部は、前記基材の前記第1主面の法線方向から平面視したとき、前記ボンディングパッドと重なる領域にも設けられている、
請求項2から7のいずれか1項に記載のキャパシタ。 - 前記ボンディングパッドにおいて、前記第1方向における熱膨張率は、前記第1方向と交差する第2方向における熱膨張率よりも大きい、
請求項1から8のいずれか1項に記載のキャパシタ。
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