JP6764126B2 - 圧電デバイスの製造方法 - Google Patents
圧電デバイスの製造方法 Download PDFInfo
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- JP6764126B2 JP6764126B2 JP2016018322A JP2016018322A JP6764126B2 JP 6764126 B2 JP6764126 B2 JP 6764126B2 JP 2016018322 A JP2016018322 A JP 2016018322A JP 2016018322 A JP2016018322 A JP 2016018322A JP 6764126 B2 JP6764126 B2 JP 6764126B2
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- 229910052741 iridium Inorganic materials 0.000 description 9
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 9
- 230000006378 damage Effects 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000005336 cracking Methods 0.000 description 5
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000005238 degreasing Methods 0.000 description 4
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- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 4
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
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- 239000010949 copper Substances 0.000 description 2
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- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
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- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Description
かかる態様では、第2電極の端部により規定される能動部と非能動部との境界において、焼損やクラックによる破壊が抑制され、信頼性が向上した圧電素子を備える圧電デバイスを製造することができる。
また、前記圧電デバイスは、前記第2電極に接続される第2リード電極を備え、前記第1領域に、前記第2リード電極の一部を前記印加用電極として形成することが好ましい。これによれば、第2リード電極とは別材料で印加用電極を形成する必要がないので、コストや工程を削減することができる。
また、前記圧電体層の上方に前記第2電極を形成する第2電極層を形成し、前記第2電極層をパターニングして前記第2電極及び前記第2電極に連続した前記印加用電極を形成することが好ましい。これによれば、第2電極とは別材料で印加用電極を形成する必要がないので、コストや工程を削減することができる。
また、前記第1電極及び前記第2電極に挟まれた能動部を複数形成し、前記第1電極又は前記第2電極の一方を前記能動部ごとに電気的に独立した個別電極として形成し、他方を複数の前記能動部に亘って共通して設けられた共通電極として形成し、前記複数の個別電極に共通して接続された配線部を形成し、前記共通電極と、前記配線部との間に電圧を印加し、前記配線部を除去することが好ましい。これによれば、配線部を介して複数の個別電極のそれぞれに電圧を印加することができ、圧電デバイスの製造工程を簡略化することができる。
また、前記第1電極を前記能動部ごとに電気的に独立した個別電極として形成し、前記第2電極を複数の前記能動部に亘って共通して設けられた共通電極として形成し、前記配線部の一部を除去して前記個別電極ごとに接続された複数の第1リード電極を形成することが好ましい。これによれば、配線部を介して複数の個別電極である第1電極のそれぞれに電圧を印加することができ、圧電デバイスの製造工程を簡略化することができる。
上記課題を解決する本発明の他の態様は、基板の上方に設けられて前記基板側から第1電極、圧電体層及び第2電極が積層された圧電素子を具備する圧電デバイスの製造方法であって、前記基板の上方に前記第1電極、前記圧電体層及び前記第2電極を積層し、前記第1電極及び前記第2電極に挟まれた能動部を複数形成し、前記第1電極を前記能動部ごとに電気的に独立した個別電極として形成し、前記第2電極を複数の前記能動部に亘って共通して設けられた共通電極として形成し、前記複数の個別電極に共通して接続された配線部を形成し、前記圧電体層の上方であって、前記第2電極が形成されていない領域に、前記第2電極の端部の外側に当該端部に連続した印加用電極を形成し、前記印加用電極を介して、前記共通電極と、前記配線部との間に電圧を印加し、前記印加用電極を除去し、前記配線部の一部を除去して前記個別電極ごとに接続された複数の第1リード電極を形成することを特徴とする圧電デバイスの製造方法にある。
かかる態様では、第2電極の端部により規定される能動部と非能動部との境界において、焼損やクラックによる破壊が抑制され、信頼性が向上した圧電素子を備える圧電デバイスを製造することができる。
上記課題を解決する本発明の他の態様は、基板の上方に設けられて前記基板側から第1電極、圧電体層及び第2電極が積層された圧電素子を具備する圧電デバイスの製造方法であって、前記振動板の上方に前記第1電極、前記圧電体層及び前記第2電極を積層し、前記圧電体層の上方であって前記第2電極が形成されていない領域に、前記第2電極の端部の外側に当該端部に連続した印加用電極を形成し、前記第1電極と、前記第2電極との間に電圧を印加し、前記印加用電極を除去することを特徴とする圧電デバイスの製造方法にある。
かかる態様では、第2電極の端部により規定される能動部と非能動部との境界において、焼損やクラックによる破壊が抑制され、信頼性が向上した圧電素子を備える圧電デバイスを製造することができる。
図1は、本実施形態に係る液体噴射装置の一例であるインクジェット式記録装置の概略構成を示している。
実施形態1では、リード電極層190をエッチングして、個別の第1リード電極91を形成し、その後に、各第1リード電極91と第2リード電極92に電圧を印加したが、このような態様に限定されない。第1リード電極91を個別に形成する前に電圧を印加し、その後に、第1リード電極91を個別に形成してもよい。
実施形態1及び実施形態2では、第2リード電極92の一部を印加用電極95としたが、このような態様に限定されない。第2電極80の一部を印加用電極95としてもよい。
以上、本発明の各実施形態について説明したが、本発明の構成は上述したものに限定されるものではない。
Claims (6)
- 基板の上方に設けられて前記基板側から第1電極、圧電体層及び第2電極が積層された圧電素子を具備する圧電デバイスの製造方法であって、
前記基板の上方に前記第1電極、前記圧電体層及び前記第2電極を積層し、
前記圧電体層の上方であって、前記第2電極が形成されておらず、前記第2電極の端部の外側に連続した第1領域に、印加用電極を形成し、
前記圧電体層の上方であって、前記第2電極が形成されておらず、前記第1領域よりも前記第2電極の外側に位置する第2領域に、印加用電極を形成せず、
前記印加用電極を介して、前記第1電極と、前記第2電極との間に電圧を印加し、
前記印加用電極を除去する
ことを特徴とする圧電デバイスの製造方法。 - 請求項1に記載する圧電デバイスの製造方法において、
前記圧電デバイスは、前記第2電極に接続される第2リード電極を備え、
前記第1領域に、前記第2リード電極の一部を前記印加用電極として形成する
ことを特徴とする圧電デバイスの製造方法。 - 請求項1に記載する圧電デバイスの製造方法において、
前記圧電体層の上方に前記第2電極を形成する第2電極層を形成し、
前記第2電極層をパターニングして前記第2電極及び前記第2電極に連続した前記印加用電極を形成する
ことを特徴とする圧電デバイスの製造方法。 - 請求項1から請求項3の何れか一項に記載する圧電デバイスの製造方法において、
前記第1電極及び前記第2電極に挟まれた能動部を複数形成し、
前記第1電極又は前記第2電極の一方を前記能動部ごとに電気的に独立した個別電極として形成し、他方を複数の前記能動部に亘って共通して設けられた共通電極として形成し、
前記複数の個別電極に共通して接続された配線部を形成し、
前記共通電極と、前記配線部との間に電圧を印加し、
前記配線部を除去する
ことを特徴とする圧電デバイスの製造方法。 - 請求項4に記載する圧電デバイスの製造方法において、
前記第1電極を前記能動部ごとに電気的に独立した個別電極として形成し、前記第2電極を複数の前記能動部に亘って共通して設けられた共通電極として形成し、
前記配線部の一部を除去して前記個別電極ごとに接続された複数の第1リード電極を形成する
ことを特徴とする圧電デバイスの製造方法。 - 基板の上方に設けられて前記基板側から第1電極、圧電体層及び第2電極が積層された圧電素子を具備する圧電デバイスの製造方法であって、
前記基板の上方に前記第1電極、前記圧電体層及び前記第2電極を積層し、
前記第1電極及び前記第2電極に挟まれた能動部を複数形成し、
前記第1電極を前記能動部ごとに電気的に独立した個別電極として形成し、前記第2電極を複数の前記能動部に亘って共通して設けられた共通電極として形成し、
前記複数の個別電極に共通して接続された配線部を形成し、
前記圧電体層の上方であって、前記第2電極が形成されていない領域に、前記第2電極の端部の外側に当該端部に連続した印加用電極を形成し、
前記印加用電極を介して、前記共通電極と、前記配線部との間に電圧を印加し、
前記印加用電極を除去し、
前記配線部の一部を除去して前記個別電極ごとに接続された複数の第1リード電極を形成する
ことを特徴とする圧電デバイスの製造方法。
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