JP2017042952A - 電子デバイス、圧電デバイス、液体噴射ヘッド、及び、これらの製造方法 - Google Patents
電子デバイス、圧電デバイス、液体噴射ヘッド、及び、これらの製造方法 Download PDFInfo
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- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
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- B41J2/161—Production of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
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- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
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- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
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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
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- H—ELECTRICITY
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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
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B41J2002/14241—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm having a cover around the piezoelectric thin film element
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
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Abstract
Description
前記キャパシターの少なくとも一の端は、前記第2の電極層の端により規定され、
前記絶縁体層は、前記キャパシターの一の端よりも外側の素子外領域まで延設され、
前記素子外領域における絶縁体層は、前記キャパシターにおける絶縁体層よりも薄く形成され、
前記素子外領域における絶縁体層の厚さと、前記キャパシターにおける絶縁体層の厚さとの差は、50nm以下であることを特徴とする。
前記絶縁体層が圧電体層で、前記キャパシターが圧電素子であることを特徴とする。
前記圧電素子の変形に伴い容積を変化させる圧力室と、
前記圧力室に連通するノズルと、を備えたことを特徴とする。
前記第2の電極層をエッチングにより除去すると共に、前記エッチングにより生じた前記第2の電極層の端により規定された前記キャパシターの少なくとも一の端よりも外側の素子外領域における前記絶縁体層が前記第2の電極層が除去された後も継続してエッチングされ、前記素子外領域における前記絶縁体層が50nm以下の範囲で厚さ方向に除去されるエッチング工程を含むことを特徴とする。
前記絶縁体層が圧電体層で、前記キャパシターが圧電素子であることを特徴とする。
前記圧電素子の変形に伴い容積を変化させる圧力室を形成する圧力室形成工程と、
前記圧力室に連通するノズルを形成するノズルプレート形成工程と、を含むことを特徴とする。
また、オーバーエッチングされただけでも微小なクラックを発生させることがあるため、電極層に挟まれた絶縁体層においても同様の破壊が発生することが推測される。すなわち、絶縁体層と素子外領域との境界に応力が発生しない場合でも、オーバーエッチングにより発生した微小なクラックに電流が流れることによって破損が起きる虞がある。そして、この微小なクラックの程度は、オーバーエッチング量によるため、上下一対の電極層とこれらの電極層に挟まれた絶縁体層とからなるキャパシターにおいても、キャパシターの端が破損することによる不良率は、図5におけるグラフと同様の傾向になると推測される。
Claims (6)
- 第1の電極層、絶縁体層、および第2の電極層がこの順に形成されてなるキャパシターを備えた電子デバイスであって、
前記キャパシターの少なくとも一の端は、前記第2の電極層の端により規定され、
前記絶縁体層は、前記キャパシターの一の端よりも外側の素子外領域まで延設され、
前記素子外領域における絶縁体層は、前記キャパシターにおける絶縁体層よりも薄く形成され、
前記素子外領域における絶縁体層の厚さと、前記キャパシターにおける絶縁体層の厚さとの差は、50nm以下であることを特徴とする電子デバイス。 - 請求項1に記載の電子デバイスにおいて、
前記絶縁体層が圧電体層で、前記キャパシターが圧電素子であることを特徴とする圧電デバイス。 - 請求項2に記載の圧電デバイスと、
前記圧電素子の変形に伴い容積を変化させる圧力室と、
前記圧力室に連通するノズルと、を備えたことを特徴とする液体噴射ヘッド。 - 第1の電極層、絶縁体層、および第2の電極層がこの順に形成されたキャパシターを備えた電子デバイスの製造方法であって、
前記第2の電極層をエッチングにより除去すると共に、前記エッチングにより生じた前記第2の電極層の端により規定された前記キャパシターの少なくとも一の端よりも外側の素子外領域における前記絶縁体層が前記第2の電極層が除去された後も継続してエッチングされ、前記素子外領域における前記絶縁体層が50nm以下の範囲で厚さ方向に除去されるエッチング工程を含むことを特徴とする電子デバイスの製造方法。 - 請求項4に記載の電子デバイスの製造方法において、
前記絶縁体層が圧電体層で、前記キャパシターが圧電素子であることを特徴とする圧電デバイスの製造方法。 - 請求項5に記載の圧電デバイスの製造方法と、
前記圧電素子の変形に伴い容積を変化させる圧力室を形成する圧力室形成工程と、
前記圧力室に連通するノズルを形成するノズルプレート形成工程と、を含むことを特徴とする液体噴射ヘッドの製造方法。
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JP2015165506A JP2017042952A (ja) | 2015-08-25 | 2015-08-25 | 電子デバイス、圧電デバイス、液体噴射ヘッド、及び、これらの製造方法 |
US15/240,864 US9694580B2 (en) | 2015-08-25 | 2016-08-18 | Electronic device, piezoelectric device, liquid ejecting head, and manufacturing methods for electronic device, piezoelectric device, and liquid ejecting head |
US15/614,889 US9840077B2 (en) | 2015-08-25 | 2017-06-06 | Electronic device, piezoelectric device, liquid ejecting head, and manufacturing methods for electronic device, piezoelectric device, and liquid ejecting head |
US15/807,060 US10134527B2 (en) | 2015-08-25 | 2017-11-08 | Electronic device, piezoelectric device, liquid ejecting head, and manufacturing methods for electronic device, piezoelectric device, and liquid ejecting head |
US16/161,991 US10573463B2 (en) | 2015-08-25 | 2018-10-16 | Electronic device, piezoelectric device, liquid ejecting head, and manufacturing methods for electronic device, piezoelectric device, and liquid ejecting head |
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US10446324B2 (en) * | 2016-11-18 | 2019-10-15 | Samsung Electro-Mechanics Co., Ltd. | Thin film capacitor |
Citations (6)
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US5790156A (en) * | 1994-09-29 | 1998-08-04 | Tektronix, Inc. | Ferroelectric relaxor actuator for an ink-jet print head |
JP2005033775A (ja) * | 2003-06-18 | 2005-02-03 | Matsushita Electric Ind Co Ltd | 電子部品及びその製造方法 |
JP2014040102A (ja) * | 2013-10-07 | 2014-03-06 | Seiko Epson Corp | 液体噴射ヘッド及び液体噴射装置 |
JP2014112646A (ja) * | 2012-11-12 | 2014-06-19 | Seiko Epson Corp | 液体噴射ヘッド及び液体噴射装置並びにアクチュエーター装置 |
JP2015056636A (ja) * | 2013-09-13 | 2015-03-23 | 株式会社リコー | 圧電体アクチュエータ、液滴吐出ヘッド、液体カートリッジ、インクジェット記録装置、及び圧電体アクチュエータの製造方法 |
JP2015074174A (ja) * | 2013-10-09 | 2015-04-20 | 株式会社リコー | 圧電素子、液滴吐出ヘッド、液滴吐出装置、画像形成装置及び圧電素子の製造方法 |
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JP3666177B2 (ja) * | 1997-04-14 | 2005-06-29 | 松下電器産業株式会社 | インクジェット記録装置 |
JP5725272B2 (ja) * | 2010-03-08 | 2015-05-27 | セイコーエプソン株式会社 | 液体噴射ヘッド及び液体噴射装置並びに圧電素子 |
JP2013118231A (ja) * | 2011-12-01 | 2013-06-13 | Seiko Epson Corp | 液体噴射ヘッド及び液体噴射装置並びに圧電素子 |
JP6115206B2 (ja) | 2013-03-13 | 2017-04-19 | セイコーエプソン株式会社 | 液体噴射ヘッド、液体噴射装置、圧電素子及びその製造方法 |
JP2015099864A (ja) | 2013-11-20 | 2015-05-28 | コニカミノルタ株式会社 | 薄膜圧電アクチュエータの製造方法 |
JP2017042952A (ja) | 2015-08-25 | 2017-03-02 | セイコーエプソン株式会社 | 電子デバイス、圧電デバイス、液体噴射ヘッド、及び、これらの製造方法 |
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JP2005033775A (ja) * | 2003-06-18 | 2005-02-03 | Matsushita Electric Ind Co Ltd | 電子部品及びその製造方法 |
JP2014112646A (ja) * | 2012-11-12 | 2014-06-19 | Seiko Epson Corp | 液体噴射ヘッド及び液体噴射装置並びにアクチュエーター装置 |
JP2015056636A (ja) * | 2013-09-13 | 2015-03-23 | 株式会社リコー | 圧電体アクチュエータ、液滴吐出ヘッド、液体カートリッジ、インクジェット記録装置、及び圧電体アクチュエータの製造方法 |
JP2014040102A (ja) * | 2013-10-07 | 2014-03-06 | Seiko Epson Corp | 液体噴射ヘッド及び液体噴射装置 |
JP2015074174A (ja) * | 2013-10-09 | 2015-04-20 | 株式会社リコー | 圧電素子、液滴吐出ヘッド、液滴吐出装置、画像形成装置及び圧電素子の製造方法 |
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US9694580B2 (en) | 2017-07-04 |
US20180065364A1 (en) | 2018-03-08 |
US9840077B2 (en) | 2017-12-12 |
US20170266970A1 (en) | 2017-09-21 |
US20170057230A1 (en) | 2017-03-02 |
US20190051461A1 (en) | 2019-02-14 |
US10573463B2 (en) | 2020-02-25 |
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