CN101356606B - 金属电解电容器及其制造方法 - Google Patents
金属电解电容器及其制造方法 Download PDFInfo
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- CN101356606B CN101356606B CN200780001163XA CN200780001163A CN101356606B CN 101356606 B CN101356606 B CN 101356606B CN 200780001163X A CN200780001163X A CN 200780001163XA CN 200780001163 A CN200780001163 A CN 200780001163A CN 101356606 B CN101356606 B CN 101356606B
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- Prior art keywords
- metal
- electrode layer
- main electrode
- paper tinsel
- electrolytic etching
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 223
- 239000002184 metal Substances 0.000 title claims abstract description 223
- 239000003990 capacitor Substances 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 93
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 43
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000010410 layer Substances 0.000 claims description 129
- 238000000866 electrolytic etching Methods 0.000 claims description 89
- 239000004411 aluminium Substances 0.000 claims description 30
- 239000012790 adhesive layer Substances 0.000 claims description 25
- 239000010949 copper Substances 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 239000004332 silver Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 238000007772 electroless plating Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000005476 soldering Methods 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000002052 molecular layer Substances 0.000 claims description 2
- 238000002207 thermal evaporation Methods 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 8
- 229910052725 zinc Inorganic materials 0.000 claims 8
- 239000011701 zinc Substances 0.000 claims 8
- 238000009713 electroplating Methods 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 7
- 239000007769 metal material Substances 0.000 abstract description 7
- 239000011888 foil Substances 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 3
- 239000007784 solid electrolyte Substances 0.000 abstract description 2
- 239000005030 aluminium foil Substances 0.000 description 9
- 239000010931 gold Substances 0.000 description 5
- 239000000284 extract Substances 0.000 description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical group O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- -1 aluminium oxide (Al 2O 3) metal oxide Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 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
- 238000009499 grossing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0029—Processes of manufacture
- H01G9/0032—Processes of manufacture formation of the dielectric layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
- H01G9/032—Inorganic semiconducting electrolytes, e.g. MnO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure
- H01G9/055—Etched foil electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/15—Solid electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/04—Electrodes or formation of dielectric layers thereon
- H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
- H01G9/0425—Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/07—Dielectric layers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
Description
Claims (36)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070012342A KR100779263B1 (ko) | 2007-02-06 | 2007-02-06 | 무극성 금속 전해 커패시터 및 그의 제조방법 |
KR10-2007-0012342 | 2007-02-06 | ||
KR1020070012342 | 2007-02-06 | ||
PCT/KR2007/001995 WO2008096932A1 (en) | 2007-02-06 | 2007-04-24 | Metal electrolytic capacitor and method manufacturing thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101356606A CN101356606A (zh) | 2009-01-28 |
CN101356606B true CN101356606B (zh) | 2011-08-31 |
Family
ID=39080775
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200780001163XA Active CN101356606B (zh) | 2007-02-06 | 2007-04-24 | 金属电解电容器及其制造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8004821B2 (zh) |
JP (1) | JP2008193096A (zh) |
KR (1) | KR100779263B1 (zh) |
CN (1) | CN101356606B (zh) |
DE (1) | DE112007003314B8 (zh) |
TW (1) | TWI433186B (zh) |
WO (1) | WO2008096932A1 (zh) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009051294A1 (en) * | 2007-10-19 | 2009-04-23 | Young Joo Oh | Metal capacitor and manufacturing method thereof |
WO2009051296A1 (en) * | 2007-10-19 | 2009-04-23 | Young Joo Oh | Metal capacitor and manufacturing method thereof |
US7626802B2 (en) | 2007-10-19 | 2009-12-01 | Oh Young Joo | Metal capacitor and manufacturing method thereof |
KR101012930B1 (ko) | 2008-05-23 | 2011-02-08 | 오영주 | 금속 커패시터 제조방법 |
US8159811B2 (en) * | 2007-10-19 | 2012-04-17 | Oh Young Joo | Metal capacitor and manufacturing method thereof |
US7965492B2 (en) | 2007-10-19 | 2011-06-21 | Oh Young Joo | Metal capacitor and manufacturing method thereof |
WO2009051297A1 (en) * | 2007-10-19 | 2009-04-23 | Young Joo Oh | Metal capacitor and manufacturing method thereof |
WO2009051295A1 (en) * | 2007-10-19 | 2009-04-23 | Young Joo Oh | Metal capacitor and manufacturing method thereof |
US8116062B2 (en) | 2007-10-19 | 2012-02-14 | Oh Young Joo | Metal capacitor to improve electric conductivity |
US8203823B2 (en) | 2008-01-11 | 2012-06-19 | Oh Young Joo | Metal capacitor and manufacturing method thereof |
KR100942121B1 (ko) * | 2008-01-11 | 2010-02-12 | 오영주 | 금속 커패시터 |
WO2009091090A1 (en) * | 2008-01-16 | 2009-07-23 | Young Joo Oh | Metal capacitor and manufacturing method thereof |
KR100958457B1 (ko) | 2009-05-29 | 2010-05-17 | 오영주 | 금속 커패시터 |
US8788590B2 (en) | 2010-04-30 | 2014-07-22 | Iliv Technologies Inc. | Collaboration tool |
CN102568864B (zh) * | 2010-12-20 | 2014-06-25 | 镕钽科技有限公司 | 电容结构及其制造方法 |
KR101415827B1 (ko) * | 2012-09-24 | 2014-07-08 | 삼화콘덴서공업주식회사 | 나노기공을 갖는 커패시터 및 그의 제조방법 |
KR101550044B1 (ko) * | 2013-07-16 | 2015-09-04 | 삼화전기주식회사 | 박판, 박판 제조방법 및 이를 이용한 금속 커패시터 |
CN104714672B (zh) | 2013-12-11 | 2019-04-09 | 昆山工研院新型平板显示技术中心有限公司 | 压敏型显示屏触控单元、触摸屏及其制造方法 |
DE102014118222A1 (de) * | 2014-12-09 | 2016-06-23 | Epcos Ag | Verfahren zur Herstellung von Elektrodenfolien für Kondensatoren, Elektrodenfolien und Kondensatoren mit den Elektrodenfolien |
JPWO2017026233A1 (ja) * | 2015-08-10 | 2018-05-24 | 株式会社村田製作所 | コンデンサ |
JP7087352B2 (ja) * | 2017-11-22 | 2022-06-21 | 日本ケミコン株式会社 | 電解コンデンサモジュール、フィルタ回路および電力変換器 |
WO2019171470A1 (ja) * | 2018-03-06 | 2019-09-12 | 株式会社 東芝 | コンデンサ及びその製造方法 |
KR102250960B1 (ko) * | 2019-02-19 | 2021-05-11 | 성균관대학교산학협력단 | 커패시터 및 커패시터 제조방법 |
JP7151907B2 (ja) | 2019-09-25 | 2022-10-12 | 株式会社村田製作所 | キャパシタおよびその製造方法 |
CN112151539B (zh) * | 2020-09-10 | 2022-04-26 | 复旦大学 | 一种高存储容量纳米电容三维集成结构及其制备方法 |
US12002631B2 (en) * | 2021-10-20 | 2024-06-04 | KYOCERA AVX Components Corporation | Electrodeposited dielectric for a solid electrolytic capacitor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2610468Y (zh) * | 2003-03-13 | 2004-04-07 | 上海飞乐股份有限公司天和电容器分公司 | 大容量铝电解电容器 |
JP2006222333A (ja) * | 2005-02-14 | 2006-08-24 | Sanyo Electric Co Ltd | 固体電解コンデンサ及びその製造方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4184192A (en) * | 1977-02-15 | 1980-01-15 | Matsushita Electric Industrial Co., Ltd. | Solid electrolyte compacitor using low resistivity metal oxide as cathode collector |
JPS58164215A (ja) * | 1982-03-25 | 1983-09-29 | エルナ−株式会社 | 電解コンデンサ用アルミニウム箔のエツチング方法 |
JPS62136015A (ja) * | 1985-12-10 | 1987-06-19 | 日通工株式会社 | 積層型固体電解コンデンサとそのチツプ製造方法 |
US5434742A (en) * | 1991-12-25 | 1995-07-18 | Hitachi, Ltd. | Capacitor for semiconductor integrated circuit and method of manufacturing the same |
JP3473967B2 (ja) * | 1992-11-24 | 2003-12-08 | 日本ケミコン株式会社 | 固体電解コンデンサの製造方法 |
JP3557564B2 (ja) * | 1994-10-12 | 2004-08-25 | 昭和電工株式会社 | 積層型固体電解コンデンサ |
US5926359A (en) * | 1996-04-01 | 1999-07-20 | International Business Machines Corporation | Metal-insulator-metal capacitor |
WO1997041577A1 (fr) * | 1996-04-26 | 1997-11-06 | Nippon Chemi-Con Corporation | Condensateur a electrolyte solide et sa fabrication |
JPH1079326A (ja) * | 1996-09-03 | 1998-03-24 | Matsushita Electric Ind Co Ltd | コンデンサおよびその製造方法 |
JP3201468B2 (ja) * | 1997-05-26 | 2001-08-20 | 日本電気株式会社 | 容量素子及びその製造方法 |
US6310765B1 (en) * | 1997-06-20 | 2001-10-30 | Matsushita Electric Industrial Co., Ltd. | Electrolytic capacitor and method for manufacturing the same |
US6462931B1 (en) * | 1997-10-23 | 2002-10-08 | Texas Instruments Incorporated | High-dielectric constant capacitor and memory |
US6166899A (en) | 1997-12-18 | 2000-12-26 | Nippon Chemi-Con Corporation | Electrolyte for electrolytic capacitor and electrolytic capacitor having the same |
TW410402B (en) * | 1998-02-06 | 2000-11-01 | Sony Corp | Dielectric capacitor and method of manufacturing same, and dielectric memeory using same |
JP3252800B2 (ja) * | 1998-07-03 | 2002-02-04 | 松下電器産業株式会社 | 積層型コンデンサおよびその製造方法 |
JPH11307386A (ja) * | 1998-04-21 | 1999-11-05 | Matsushita Electric Ind Co Ltd | コンデンサおよびその製造方法 |
KR19990081370A (ko) * | 1998-04-29 | 1999-11-15 | 권호택 | 고체 전해콘덴서의 전해질층 형성방법 |
WO2001057928A1 (en) * | 2000-02-03 | 2001-08-09 | Case Western Reserve University | High power capacitors from thin layers of metal powder or metal sponge particles |
TW516054B (en) * | 2000-05-26 | 2003-01-01 | Matsushita Electric Ind Co Ltd | Solid electrolytic capacitor |
JP2005251938A (ja) * | 2004-03-03 | 2005-09-15 | Nec Electronics Corp | 半導体装置およびその製造方法 |
JP2008507847A (ja) * | 2004-07-23 | 2008-03-13 | サンデュー・テクノロジーズ・エルエルシー | 高エネルギー貯蔵密度及び低esrを有するコンデンサ |
-
2007
- 2007-02-06 KR KR1020070012342A patent/KR100779263B1/ko active IP Right Grant
- 2007-04-24 WO PCT/KR2007/001995 patent/WO2008096932A1/en active Application Filing
- 2007-04-24 CN CN200780001163XA patent/CN101356606B/zh active Active
- 2007-04-24 DE DE112007003314.2T patent/DE112007003314B8/de active Active
-
2008
- 2008-01-24 US US12/010,328 patent/US8004821B2/en active Active
- 2008-02-05 JP JP2008024881A patent/JP2008193096A/ja active Pending
- 2008-03-24 TW TW097110340A patent/TWI433186B/zh active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2610468Y (zh) * | 2003-03-13 | 2004-04-07 | 上海飞乐股份有限公司天和电容器分公司 | 大容量铝电解电容器 |
JP2006222333A (ja) * | 2005-02-14 | 2006-08-24 | Sanyo Electric Co Ltd | 固体電解コンデンサ及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
TWI433186B (zh) | 2014-04-01 |
JP2008193096A (ja) | 2008-08-21 |
DE112007003314T5 (de) | 2009-12-17 |
CN101356606A (zh) | 2009-01-28 |
WO2008096932A1 (en) | 2008-08-14 |
KR100779263B1 (ko) | 2007-11-27 |
DE112007003314B4 (de) | 2015-08-20 |
TW200941526A (en) | 2009-10-01 |
DE112007003314B8 (de) | 2015-12-03 |
US20080285210A1 (en) | 2008-11-20 |
US8004821B2 (en) | 2011-08-23 |
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ASS | Succession or assignment of patent right |
Owner name: KOREA JCC CORPORATION Effective date: 20150122 Owner name: SANWA ELECTRIC CO., LTD. Free format text: FORMER OWNER: WU YINGZHOU Effective date: 20150122 |
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Effective date of registration: 20150122 Address after: Cheongju Chungbuk Korea Patentee after: Three and electric KK Patentee after: KOREA JCC CO LTD Address before: Seoul, South Korea Patentee before: Wu Yingzhou |