JP3998254B2 - インクジェットヘッドの製造方法 - Google Patents
インクジェットヘッドの製造方法 Download PDFInfo
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- JP3998254B2 JP3998254B2 JP2004028631A JP2004028631A JP3998254B2 JP 3998254 B2 JP3998254 B2 JP 3998254B2 JP 2004028631 A JP2004028631 A JP 2004028631A JP 2004028631 A JP2004028631 A JP 2004028631A JP 3998254 B2 JP3998254 B2 JP 3998254B2
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- 239000000463 material Substances 0.000 claims description 37
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- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 12
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
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- 238000000576 coating method Methods 0.000 description 9
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- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000012670 alkaline solution Substances 0.000 description 3
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- 229910052802 copper Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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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 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
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- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
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- LPEKGGXMPWTOCB-UHFFFAOYSA-N 8beta-(2,3-epoxy-2-methylbutyryloxy)-14-acetoxytithifolin Natural products COC(=O)C(C)O LPEKGGXMPWTOCB-UHFFFAOYSA-N 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 1
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- ODQWQRRAPPTVAG-GZTJUZNOSA-N doxepin Chemical compound C1OC2=CC=CC=C2C(=C/CCN(C)C)/C2=CC=CC=C21 ODQWQRRAPPTVAG-GZTJUZNOSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
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- 150000004678 hydrides Chemical class 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
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- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
前記基板上に、選択的にエッチングが可能な犠牲層であって、上方から見た形状が平行四辺形である犠牲層を、前記平行四辺形の長辺及び短辺が{111}と等価の面に平行になる様に設ける工程と、
前記犠牲層を被覆するように耐エッチング性のエッチングストップ層を形成する工程と、
前記エッチングストップ層上に前記圧電素子を形成する工程と、
前記圧電素子上に前記振動板を形成する工程と、
前記振動板上に前記インク流路に対応した型材を設ける工程と、
前記型材を覆う様に、前記インク流路の壁材を設ける工程と、
前記基板の、前記犠牲層に対応する部分に、前記基板の裏側から先導孔を設ける工程と、
前記基板の裏側から結晶軸異方性エッチングを行うことによって前記基板の前記圧電素子に対応する部分と前記犠牲層とを除去し、前記基板に前記空間を形成する工程と、
前記型材を除去して前記インク流路を形成する工程と、
をこの順に含むことを特徴とする
インクジェットヘッドの製造方法を提供することである。
異方性エッチング前に感光性樹脂で液体流路および液体吐出口を形成することによって、吐出口ピッチの微細化および工程の短縮化が可能になる。
図1は本発明の実施態様に係る製造方法によって製造されたインクジェットヘッドを示す模式的断面図である。基板としてはSi{110}ウエハが用いられる。基板には振動板の背面の空間を形成するために異方性エッチングによって穴102が空けられている。さらに、同時に液体を裏面から供給するための貫通穴103も空けられている。Si基板中の穴102の上部には、振動板104、圧電体薄膜105、上電極106、下電極107および保護膜108等が形成されている。
本発明に係るインクジェットヘッドの製造プロセスの他の例を、図4〜図9を使って順を追って説明する。
本発明による他の実施例の製造工程を説明する。
ここで基板の表面とは振動板・半導体薄膜など駆動回路が形成された面、基板裏面とはその反対の面を示す。
図18は実施例5の製造方法を示す模式図である。面方位{110}を持つ6インチのSi基板に駆動回路を形成するまでは実施例4と同様に作成した。でき上がった基板上に導電層1116となるTi/Cuをそれぞれ250Å/750Åの厚さにスパッタリングにより成膜、パターニングした(図18(1))。基板上に後に第1パターン1114および第2パターン1115になるレジストPMER HM-3000PMを滴下し所定の回転数で回転させ、所定の温度でベークするという処理を3回繰り返して85μmに形成した(3度塗り)。その後、まず第1パターン(圧力発生室や流路)のマスクで露光し、続けて第2パターン(吐出口)のマスクで2重露光し、その後現像した(図18(2))。露光量を調整することで第1パターンを60μm、第2パターンを25μmの厚さにすることができた。型材1115の露光にはプロキシミティタイプの露光機を使いマスクと基板のギャップを120μmにすることでテーパー形状にした。型材の表面側から見たサイズは短辺92μm、長辺3mm。また型材は127μmピッチで短辺方向に平行に並べた。
Claims (8)
- 面方位が{110}であるSiの基板上に、吐出口からインクを吐出するための圧電素子と、該圧電素子上に設けられた振動板と、前記圧電素子に対応する様に前記吐出口に連通するインク流路と、が設けられ、前記基板の前記圧電素子に対応する部分に空間が形成され、該空間の側壁の面方位が{111}であり、前記基板に形成された前記空間の側壁が、前記空間が形成される前の当該基板の主面にほぼ垂直であるインクジェットヘッドの製造方法であって、
前記基板上に、選択的にエッチングが可能な犠牲層であって、上方から見た形状が平行四辺形である犠牲層を、前記平行四辺形の長辺及び短辺が{111}と等価の面に平行になる様に設ける工程と、
前記犠牲層を被覆するように耐エッチング性のエッチングストップ層を形成する工程と、
前記エッチングストップ層上に前記圧電素子を形成する工程と、
前記圧電素子上に前記振動板を形成する工程と、
前記振動板上に前記インク流路に対応した型材を設ける工程と、
前記型材を覆う様に、前記インク流路の壁材を設ける工程と、
前記基板の、前記犠牲層に対応する部分に、前記基板の裏側から先導孔を設ける工程と、
前記基板の裏側から結晶軸異方性エッチングを行うことによって前記基板の前記圧電素子に対応する部分と前記犠牲層とを除去し、前記基板に前記空間を形成する工程と、
前記型材を除去して前記インク流路を形成する工程と、
をこの順に含むことを特徴とするインクジェットヘッドの製造方法。
- 前記インク流路は、前記面方位が{111}である面に対して長手成分が平行に形成される請求項1に記載のインクジェットヘッドの製造方法。
- 前記インク流路は、前記面方位が{111}である面と垂直な方向に複数形成される請求項1に記載のインクジェットヘッドの製造方法。
- 前記基板に前記空間を形成する工程において、前記空間の形成と並行して前記インク流路に連通する連通孔を前記基板に形成する請求項1に記載のインクジェットヘッドの製造方法。
- 前記基板に前記空間を形成する工程は、前記基板に対する結晶軸異方性エッチングを行った後、前記エッチングストップ層を除去する請求項1に記載のインクジェットヘッドの製造方法。
- 前記インク流路の壁材を設ける工程と前記基板に前記空間を形成する工程との間において、前記インク流路の型材の上に前記吐出口の型材を設ける工程を更に含む請求項1に記載のインクジェットヘッドの製造方法。
- 前記インク流路の壁材はメッキ処理によって形成する請求項1に記載のインクジェットヘッドの製造方法。
- 請求項1に記載のインクジェットヘッドの製造方法によって製造されたインクジェットヘッド。
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US10/771,321 US7207109B2 (en) | 2003-02-07 | 2004-02-05 | Method for producing ink jet head |
CNB2004100313661A CN1308144C (zh) | 2003-02-07 | 2004-02-06 | 喷墨头的制造方法 |
EP04250647A EP1445102B1 (en) | 2003-02-07 | 2004-02-06 | Method for producing ink jet head |
KR1020040008169A KR100731310B1 (ko) | 2003-02-07 | 2004-02-07 | 잉크젯 헤드 제조 방법 |
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