JP2008060259A - 圧電素子及びその製造方法並びに液体噴射ヘッド - Google Patents
圧電素子及びその製造方法並びに液体噴射ヘッド Download PDFInfo
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- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
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- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】基板の一方面側に設けられた下電極膜と、下電極膜上に設けられた圧電材料からなる圧電体層と、圧電体層上に設けられた上電極膜とからなり、下電極膜が、白金、チタン、イリジウム及び酸素を含み、且つ下電極膜が、基板10上に設けられた白金を主成分とする第1層65と、第1層65上に設けられたチタンを主成分とする第2層66と、第2層66上に設けられたイリジウムを主成分とする第3層67とからなる。
【選択図】図3
Description
かかる第1の態様では、下電極膜を所定の構成とすることにより、下電極膜と基板との密着性及び下電極膜と圧電体層との密着性に優れ、且つ靭性を向上させて変位特性及び長期信頼性に優れた圧電素子を提供することができる。
かかる第2の態様では、下電極膜を所定の構成とすることにより、下電極膜と基板との密着性及び下電極膜と圧電体層との密着性により優れ、且つ靭性をより向上させて変位特性及び長期信頼性により優れた圧電素子を提供することができる。
かかる第3の態様では、下電極膜を所定の構成とすることにより、下電極膜と基板との密着性及び下電極膜と圧電体層との密着性にさらに優れ、且つ靭性をさらに向上させて変位特性及び長期信頼性にさらに優れた圧電素子を提供することができる。
かかる第4の態様では、下電極膜を所定の構成とすることにより、下電極膜と基板との密着性及び下電極膜と圧電体層との密着性、変位特性及び長期信頼性が向上するため、耐久性及び信頼性に優れた液体噴射ヘッドを提供することができる。
かかる第5の態様では、所望の構成の下電極膜を形成することができると共に、下電極膜を所定の構成とすることにより、下電極膜と基板との密着性及び下電極膜と圧電体層との密着性に優れ、且つ靭性を向上させて変位特性及び長期信頼性に優れた圧電素子を提供することができる。
(実施形態1)
図1は、本発明の実施形態1に係る液体噴射ヘッドの一例であるインクジェット式記録ヘッドの概略構成を示す分解斜視図であり、図2は、図1の平面図及びそのA−A′断面図である。
以上、本発明の実施形態1を説明したが、インクジェット式記録ヘッドの基本的構成は上述したものに限定されるものではない。例えば、上述した実施形態1では、圧電体前駆体膜71を塗布、乾燥及び脱脂した後、焼成して圧電体膜72を形成するようにしたが、特にこれに限定されず、例えば、圧電体前駆体膜71を塗布、乾燥及び脱脂する工程を複数回、例えば、2回繰り返し行った後、焼成することで圧電体膜72を形成するようにしてもよい。このようにして圧電体層70を形成する場合であっても、最終的に、白金(Pt)、チタン(Ti)、イリジウム(Ir)及び酸素(O)を含み、且つ主成分が白金(Pt)である第1層65と、主成分がチタン(Ti)である第2層66と、主成分がイリジウム(Ir)である第3層67とからなる下電極膜60を形成することができる。
Claims (5)
- 基板の一方面側に設けられた下電極膜と、該下電極膜上に設けられた圧電材料からなる圧電体層と、該圧電体層上に設けられた上電極膜とからなり、前記下電極膜が、白金、チタン、イリジウム及び酸素を含み、且つ当該下電極膜が、基板上に設けられた白金を主成分とする第1層と、該第1層上に設けられたチタンを主成分とする第2層と、該第2層上に設けられたイリジウムを主成分とする第3層とからなることを特徴とする圧電素子。
- 前記第1層の第2成分がチタンであり、前記第2層の第2成分が白金であり、前記第3層の第2成分がチタンであることを特徴とする請求項1に記載の圧電素子。
- 前記第1層と前記第2層と前記第3層との膜厚比が、6〜7:3〜2:1にあることを特徴とする請求項1又は2に記載の圧電素子。
- 請求項1〜3の何れかに記載の圧電素子と、一方面側に当該圧電素子が振動板を介して設けられると共に液滴を吐出するノズル開口に連通する圧力発生室が設けられた流路形成基板とを具備することを特徴とする液体噴射ヘッド。
- 基板の一方面側に、チタンからなる密着層と、白金からなる白金層と、イリジウムからなる拡散防止層とを1:4〜6:0.5〜1の膜厚比で順次積層して下電極膜を形成する工程と、前記下電極膜上に圧電材料からなる圧電体前駆体膜を形成すると共に当該圧電体前駆体膜を焼成して結晶化させた圧電体膜からなる圧電体層を形成する工程と、前記圧電体層上に上電極膜を形成する工程とを具備することを特徴とする圧電素子の製造方法。
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JP2008078408A (ja) * | 2006-09-21 | 2008-04-03 | Seiko Epson Corp | アクチュエータ装置及び液体噴射ヘッド |
JP2010017984A (ja) * | 2008-07-14 | 2010-01-28 | 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 |
JP2012218232A (ja) * | 2011-04-06 | 2012-11-12 | Seiko Epson Corp | 液体噴射ヘッドの製造方法 |
JP7561971B2 (ja) | 2020-08-24 | 2024-10-04 | アプライド マテリアルズ インコーポレイテッド | 圧電用途のための堆積方法及び装置 |
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JP7561971B2 (ja) | 2020-08-24 | 2024-10-04 | アプライド マテリアルズ インコーポレイテッド | 圧電用途のための堆積方法及び装置 |
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