WO2004033211A1 - 液体吐出ヘッド、液体吐出装置及び液体吐出ヘッドの製造方法 - Google Patents
液体吐出ヘッド、液体吐出装置及び液体吐出ヘッドの製造方法 Download PDFInfo
- Publication number
- WO2004033211A1 WO2004033211A1 PCT/JP2003/012855 JP0312855W WO2004033211A1 WO 2004033211 A1 WO2004033211 A1 WO 2004033211A1 JP 0312855 W JP0312855 W JP 0312855W WO 2004033211 A1 WO2004033211 A1 WO 2004033211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- head
- insulating film
- energy conversion
- liquid
- chip
- Prior art date
Links
Classifications
-
- 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
-
- 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/05—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers produced by the application of heat
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1601—Production of bubble jet print heads
- B41J2/1603—Production of bubble jet print heads of the front shooter type
-
- 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
- B41J2/135—Nozzles
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1635—Manufacturing processes dividing the wafer into individual chips
Definitions
- Liquid Discharge Head Liquid Discharge Apparatus, and Method of Manufacturing Liquid Discharge Head
- the present invention relates to a liquid discharge head, a liquid discharge device, and a method for manufacturing a liquid discharge head, and can be applied to, for example, a thermal printer head. According to the present invention, even when dicing at a high speed, various effects due to cracks and chipping can be avoided even by dicing at a high speed by forming a thin groove having a shallow depth at least along the energy conversion element by removing the insulating film. it can. Background art
- the ink held in the ink liquid chamber is heated to generate bubbles, and the ink droplets are ejected from the nozzle by the pressure of the bubbles. It has been made.
- high-resolution printing results can be obtained by forming a plurality of heating elements integrally with a drive circuit on a semiconductor substrate with high density. Heating elements and drive circuits for multiple chips are created on a single semiconductor substrate (wafer), then cut into individual chips, and each chip is provided with an ink chamber and nozzle. As a result, the semiconductor manufacturing process can be used effectively to produce products efficiently.
- FIG. 1 is a plan view showing a semiconductor substrate in a conventional manufacturing process.
- a silicon wafer 1 having a size of 6 inches, for example, a rectangular region 2 formed with a heating element and a driving circuit for one chip is formed at a predetermined pitch.
- Figure 1 shows the silicon wafer The size of region 2 is emphasized with respect to 1.
- a cutting region 3 is formed between these regions 2 in the process of processing the silicon wafer 1.
- the cutting region 3 is a region where the protective layer 4 for protecting the ink from entering and the insulating film 5 below the protective layer 4 have been removed. It is made wider than the blade width of the blade used for dicing.
- the cutting area 3 is formed with a width of 140 [ ⁇ m] for a blade width of 50 Cm.
- the silicon wafer 1 is held on a stage of a dicing apparatus, and the blade of the stage or a high-speed rotating blade is used to cut substantially the center of the cutting area 3 with a blade.
- the silicon wafer 1 is cut into chips.
- pure water is caused to flow to a portion to be cut, thereby cooling the blade and washing away cutting chips.
- the ink held in the ink liquid chamber is heated by a heating element arranged on the chip to cause ink droplets to fly out. It is no longer possible to completely prevent the ingress of ink into the air.
- the operation of the semiconductor may become unstable.
- ink may flow into each ink liquid chamber from the end face side of the chip.
- the flow path resistance to each ink liquid chamber changes, and as a result, the image quality of the printed matter may slightly change.
- the vignetting due to such chipping may remain on the chip surface, and the vignetting may damage the chip surface when the ink liquid chamber or the like is formed.
- the damage caused by the chip proceeds to the inside of the chip, the ink may enter the chip, and in a severe case, the wiring pattern may be damaged.
- the cutting speed is reduced and the chip is cut in comparison with the case of producing an integrated circuit, thereby preventing the chip from cracking or chipping. .
- the present invention has been made in view of the above points, and has a liquid discharge head, a liquid discharge device, and a liquid discharge head that can avoid various effects due to cracks and chips even when dicing at a high speed. Is proposed.
- the present invention is applied to a liquid ejection head that ejects a droplet by driving an energy conversion element, and at least on an end face side on a side where the energy conversion element is provided.
- One insulating film is removed so as to have a groove formed.
- this droplet can be an ink droplet, a droplet of various dyes, or a droplet for forming a protective layer.
- Liquid ejection heads such as liquid droplets, liquid dispensing heads such as micro dispensers in which the droplets are reagents, various measuring devices, various test devices, and pattern drawing devices in which the droplets are agents that protect members by etching.
- a narrow groove formed by removing at least one insulating film is provided.
- the head chip is applied to a liquid ejection device that ejects a droplet by driving an energy conversion element provided on the liquid ejection head, and the head chip is provided at least on the side where the energy conversion element is provided. At least one insulating film is removed so as to have a narrow groove on the end face side.
- the method is applied to a method of manufacturing a liquid ejection head in which droplets are ejected by driving an energy conversion element, and at least a side of the head chip on which the energy conversion element is provided before the cutting step. On the end face side, there is provided an insulating film removing step of removing the insulating film to form a narrow groove.
- FIG. 1 is a plan view showing the layout of a head chip on a silicon wafer.
- FIG. 2 is a plan view for explaining cutting of a head chip.
- FIG. 3 is a cross-sectional view for explaining a cutting area.
- FIG. 4 is a plan view for explaining the chipping.
- FIG. 5 is a perspective view showing a printer head according to the first embodiment of the present invention.
- FIG. 6 is a sectional view showing a head chip applied to the printer head of FIG.
- FIGS. 7 (A) and 7 (B) are a plan view and a cross-sectional view for describing the layout of the head chip of FIG. 6 on a silicon wafer.
- FIG. 8 is a cross-sectional view showing a cutting region of the silicon chip of the head chip of FIG.
- FIG. 9 is a cross-sectional view showing a cutting region in a silicon wafer according to the second embodiment of the present invention.
- FIG. 10 is a plan view for explaining a layout of a head chip according to another embodiment of the present invention.
- FIG. 11 is a plan view showing a case where all head chips are laid out in the same direction.
- FIG. 5 shows a printer head applied to the printer according to the embodiment of the present invention. It is a perspective view.
- an ink droplet is attached to paper or the like by driving a heating element, which is an energy conversion element mounted on the printer head 11, to print an image or the like.
- the printer head 11 is formed by sequentially stacking a dry film i 3 and an orifice plate 14 on a head chip 12.
- the head chip 12 is formed by cutting a silicon wafer processed by an integrated circuit technology, and a plurality of heating elements 17 and a driving circuit for driving each heating element 17 are provided in a body. It has been made.
- the head chip 12 is arranged so that these heating elements 17 are arranged at a predetermined pitch.
- the dry film 13 is made of an organic resin, and after being placed on the head chip 12 by pressure bonding, the portions corresponding to the ink liquid chambers 15 and the ink flow paths 16 are removed, and then cured.
- the orifice plate 14 is a plate-like member processed into a predetermined shape so as to form a nozzle 19 which is a fine ink discharge port on a heating element 17 provided on the head chip 12. Yes, held on dry film 13 by bonding. As a result, in this printer head 11, an ink liquid chamber 15 and an ink flow path 16 are created for the head chip 12 by the dry film 13 and the orifice plate 14. .
- the head chip 12 has a heating element 17 arranged along one end face.
- the dry film 13 is processed into a comb-like shape so that the ink liquid chamber 15 is exposed at the end face on the side where the heating element 17 is arranged.
- the ink flow path 16 is formed on the exposed end face side.
- the printer head 11 supplies ink from the end face side of the head chip 12 and ejects ink droplets by driving the heating element 17 provided on the head chip 12. .
- FIG. 6 is a cross-sectional view showing a configuration of the head chip 12.
- the head chip 12 is formed by depositing a silicon nitride film (Si 3 N 4 ) on a silicon substrate 20 made of a silicon wafer and patterning the silicon nitride film, and then using the silicon nitride film (Si 3 N 4 ) as a mask. Due to the thermal oxidation process used, the device isolation region (LOCO
- the head chip 12 separates each element by this element isolation region to form a MOS (Metal-Oxide-Semiconductor) type.
- Transistors 22 and 23 are created.
- a contact hole 26 is formed by patterning the interlayer insulating film 24.
- the first wiring pattern 27 is formed by performing an etching process.
- the head chip 12 is connected to the transistors 22 and 23 by the first-layer wiring pattern 27 formed in this manner, and is connected to a logic circuit, a switch for driving the logic circuit and the heating element 17. Ing transistor 23 is connected.
- a second interlayer insulating film 29 made of a silicon oxide film is formed, a resistor film is deposited and patterned, thereby forming a heating element 17.
- a contact hole 31 is formed by an etching process after an insulating film 30 is deposited by silicon nitride.
- a wiring pattern material is formed into a film and subjected to a pattern-junging process, whereby a second-layer wiring pattern 32 is formed.
- wiring lands for power, ground, and various driving signals are created by the second-layer wiring pattern 32, and these lands are connected to the driving circuit and the heating element 17.
- Heating element 17 is connected to transistor 23.
- the head chip 12 After the insulating film 33 made of a silicon nitride film is formed, the head chip 12 is placed in a nitrogen gas atmosphere to which 4% hydrogen has been added, or in a 100% nitrogen gas atmosphere. A heat treatment is performed at 0 degrees for 60 minutes. As a result, in the head chip 12, the operations of the transistors 22 and 23 are stabilized, and the connection between the first-layer wiring pattern 27 and the second-layer wiring pattern 32 is stabilized, so that the contact resistance is reduced. Is reduced. In the head chip 12, this heat treatment is performed by annealing by slow cooling, so that the residual stress of the interlayer insulating film 29 and the like is relieved.
- FIG. 7 (A) is a plan view showing a layout of the head chip 12 thus produced on the silicon wafer 40.
- the heating elements 17 are laid out so as to face each other between the adjacent head chips 12, and the area between the head chips 12 is allocated to the cutting area 39. Further, in the silicon wafer 40, as shown in FIG.
- a shallow narrow groove M having a depth not reaching the element portion is formed.
- a narrow groove M having a small depth is formed along the outer periphery of the head chip 12 including the arrangement of the heating elements 17 as the energy conversion elements.
- the width of the cutting area 39 is set smaller than that of the conventional cutting area 3 described above with reference to FIG.
- the head chips 12 are formed with high density.
- the cut region 39 is, like the head chip 12 side, a thermal silicon oxide film 21, which is an element isolation region, an interlayer insulating film 24 of the first and second layers, 29, Insulating films 30 and 33 are sequentially formed, so that a step occurs with the head chip 12 in each of the above-described film forming steps, patterning steps, and the like of the head chip 12.
- the narrow groove ⁇ ⁇ is designed so that processing such as patterning in the head chip 1 2 can be performed with high precision, so that the interlayer insulating films 24, 29, insulating films 30, 33 The insulating film is partially removed and formed.
- the portion where the narrow groove ⁇ is formed is masked by the silicon nitride film, so that the portion where the narrow groove ⁇ is formed is the thermal silicon oxide film 2 1 is not created.
- the narrow insulating film 24 is also removed from the portion of the narrow groove ⁇ . Also, interlayer insulating film 29, insulating film
- the insulating film 30 is removed. After the insulating film 33 is formed, when exposing lands for power, ground, and various types of driving, the insulating film 33 at the portion of the narrow groove M is also removed.
- the interlayer insulating film 24, the interlayer insulating film 29, and the insulating film 30 are formed so that the portion of the narrow groove M can be simultaneously processed in the patterning process.
- a reticle to be used for patterning the insulating film 33 is formed.
- the fine groove M can be formed without providing a separate processing step.
- the narrow groove M is formed so as to have a width of 2 [/ m] at the deepest point in this way.
- the printer head 11 is formed by sequentially forming the transistors 22, 23, the heating element 17, etc. in the silicon wafer 40, and then cutting the head chip 1 by the dicing device. 2 is created ( Figure 6). Further, after the dry film 13 is pressed and processed on the head chip 12, an orifice plate 14 is provided, thereby creating an ink liquid chamber 15, an ink flow path 16 and the like. (Fig. 5).
- the printer head 1 1 has an ink flow path 1 formed on the end face side of the head chip 1 2.
- the ink is led to the ink liquid chamber 15 created in this way via 6 and the ink droplets held in the ink liquid chamber 15 are driven by driving the heating elements 17 by the transistors 22 and 23. Is ejected from the nozzle 19, and this ink droplet adheres to the target paper such as paper.
- the flow path resistance to 15 changes, and this change appears as a change in meniscus, and the amount of ink droplets varies between successive nozzles, and deterioration in image quality is observed.
- a crack occurs, ink enters from the ink flow path 16 side, and makes the operation of the transistors 22 and 23 unstable.
- the vignetting due to the cutting remains on the surface, the vignetting of the dry film 13 presses the vignetting chip against the chip 12, thereby damaging the surface of the chip 12. Kera pierces chip 1 2 Failures such as disconnection may occur.
- the head chip 12 of the printer head 11 is laid out on the silicon wafer 40 so that the heating elements 17 face each other.
- a cutting region 39 is provided between the head chips 12, and a narrow groove M having a small depth is formed along the cutting region 39.
- the cutting area 39 is cut by a dicing machine to cut the head chip 12, and the cracks and chips are reduced by the narrow grooves M.
- the residual stress is relaxed by heat treatment for the interlayer insulating film 29 and the like at the portion to be cut. Chipping and cracking of the silicon wafer 40 can be made much smaller than in the past, even if the silicon wafer 40 is diced at a high speed. The effect can be avoided.
- a contact hole is formed in the interlayer insulating film 29 and the insulating film 30 by patterning when forming a contact hole in the interlayer insulating film 24. Due to the pattern jung when forming, the insulating film 33 for exposing the lands such as the power supply is partially removed, and the insulating film is partially removed to form a narrow groove M, thereby increasing the man-hour. Effectively avoiding it and creating a narrow groove M can avoid various effects due to cracks and chips.
- a narrow groove having a small depth is formed along the outer periphery of the head chip 12 including the arrangement of the heat generating elements 17 which are energy conversion elements, thereby achieving high speed operation. Even when dicing with, various effects due to cracks and chips can be avoided.
- the insulating film used for the removal is the interlayer insulating film of the wiring pattern, a narrow groove can be formed at the same time in the patterning process of the interlayer insulating film.
- the insulating film to be removed is a protective film provided between the heating element, which is an energy conversion element, and the ink, a narrow groove is also formed in the patterning process of the protective layer that exposes the land. Can be created.
- FIG. 9 is a sectional view showing a cutting area 59 of the head chip 12 applied to the second embodiment of the present invention in comparison with FIG.
- a narrow groove M is formed by removing the insulating films 30 and 33.
- the configuration is the same as that of the first embodiment.
- the silicon wafer 40 is formed such that the thermal oxide film 21 is not formed at the portion where the narrow groove M is to be formed, and when the contact hole is formed in the interlayer insulating film 24, The interlayer insulating film 24 is also removed. Also, when the land is exposed, the insulating film 33 at the portion of the narrow groove M is also removed. Thus, in this embodiment, a narrow groove M having a smaller depth is formed in comparison with the first embodiment. According to the configuration of the second embodiment, the same effect as in the first embodiment can be obtained even if a narrow groove is formed by removing only a part of the insulating film.
- the narrow groove M may be formed only in a portion along the row of the heating elements 17. That is, as shown in FIG. 10, for example, a narrow groove M is formed only in a portion along the row of the heating elements 17, and a sufficient width is secured in a cutting region where the narrow groove M is not formed. I do. By doing so, the occurrence of cracks and chips can be reduced by the narrow groove M only on the end face on the side in contact with the ink, thereby preventing ink from entering and changing the flow path resistance.
- the present invention is not limited to this, and as shown in FIG. 11 in comparison with FIG.
- the chip may be laid out in the same direction.
- the narrow groove M may be formed only on the heating element 17 side of the cutting area.
- the present invention is not limited to this, and the point is that cracks and the like are generated by the heat treatment before dicing. Because of the reduction, in the step of heat treatment, it can be provided in various steps before dicing as necessary. Even without heat treatment
- the logic circuit is constituted by MOS transistors.
- the present invention is not limited to this, and can be widely applied to a case where a logic circuit is configured by a bipolar transistor.
- the present invention is not limited to this, and is widely applied to the case where the head chip is formed only by the energy conversion element. be able to.
- the energy conversion element is configured by the heating element.
- the present invention is not limited to this.
- an electrostatic actuator that changes the pressure of the ink liquid chamber by static electricity is used as the energy conversion element.
- Various configurations can be widely applied to the energy conversion element such as when applied.
- printer head which is a droplet, a droplet for forming a protective layer, etc .; furthermore, a microdispenser, in which the droplet is a reagent, various measuring devices, various testing devices, and various types, in which the droplet is a chemical which protects a member from etching. It can be widely applied to pattern drawing equipment and the like.
- the present invention relates to a liquid discharge head, a liquid discharge device, and a method of manufacturing a liquid discharge head, and can be applied to, for example, a thermal printer head.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/497,950 US7125104B2 (en) | 2002-10-09 | 2003-10-08 | Liquid-discharging head, liquid-discharging device, and method of producing the liquid-discharging head |
EP03751368A EP1570989A1 (en) | 2002-10-09 | 2003-10-08 | Liquid-discharging head, liquid-discharging device, and method of producing the liquid-discharging head |
US11/530,046 US20070064051A1 (en) | 2002-10-09 | 2006-09-08 | Liquid-ejecting head, liquid-ejecting apparatus, and method for manufacturing liquid-ejecting head |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002295594A JP2004130579A (ja) | 2002-10-09 | 2002-10-09 | 液体吐出ヘッド、液体吐出装置及び液体吐出ヘッドの製造方法 |
JP2002-295594 | 2002-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004033211A1 true WO2004033211A1 (ja) | 2004-04-22 |
Family
ID=32089216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/012855 WO2004033211A1 (ja) | 2002-10-09 | 2003-10-08 | 液体吐出ヘッド、液体吐出装置及び液体吐出ヘッドの製造方法 |
Country Status (6)
Country | Link |
---|---|
US (2) | US7125104B2 (ja) |
EP (1) | EP1570989A1 (ja) |
JP (1) | JP2004130579A (ja) |
KR (1) | KR20050055620A (ja) |
CN (1) | CN1684830A (ja) |
WO (1) | WO2004033211A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60149151A (ja) * | 1984-01-17 | 1985-08-06 | Oki Electric Ind Co Ltd | 半導体ウエハのダイシング方法 |
JPS6289321A (ja) * | 1985-10-16 | 1987-04-23 | Nec Corp | 半導体ペレツト |
JPH10202889A (ja) * | 1997-01-24 | 1998-08-04 | Hitachi Koki Co Ltd | インク噴射記録ヘッドの製造方法および記録装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5306370A (en) * | 1992-11-02 | 1994-04-26 | Xerox Corporation | Method of reducing chipping and contamination of reservoirs and channels in thermal ink printheads during dicing by vacuum impregnation with protective filler material |
US6468437B1 (en) * | 1998-12-03 | 2002-10-22 | Canon Kabushiki Kaisha | Method for producing liquid discharging head |
KR100444642B1 (ko) * | 1999-03-31 | 2004-08-16 | 세이코 엡슨 가부시키가이샤 | 좁은 피치용 커넥터, 정전 엑추에이터, 압전 엑추에이터,잉크 젯 헤드, 잉크 젯 프린터, 마이크로 머신, 액정 패널및 전자기기 |
US6648732B2 (en) * | 2001-01-30 | 2003-11-18 | Hewlett-Packard Development Company, L.P. | Thin film coating of a slotted substrate and techniques for forming slotted substrates |
US6686225B2 (en) * | 2001-07-27 | 2004-02-03 | Texas Instruments Incorporated | Method of separating semiconductor dies from a wafer |
-
2002
- 2002-10-09 JP JP2002295594A patent/JP2004130579A/ja active Pending
-
2003
- 2003-10-08 WO PCT/JP2003/012855 patent/WO2004033211A1/ja active Application Filing
- 2003-10-08 US US10/497,950 patent/US7125104B2/en not_active Expired - Fee Related
- 2003-10-08 EP EP03751368A patent/EP1570989A1/en not_active Withdrawn
- 2003-10-08 CN CNA2003801000600A patent/CN1684830A/zh active Pending
- 2003-10-08 KR KR1020047008797A patent/KR20050055620A/ko not_active Application Discontinuation
-
2006
- 2006-09-08 US US11/530,046 patent/US20070064051A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60149151A (ja) * | 1984-01-17 | 1985-08-06 | Oki Electric Ind Co Ltd | 半導体ウエハのダイシング方法 |
JPS6289321A (ja) * | 1985-10-16 | 1987-04-23 | Nec Corp | 半導体ペレツト |
JPH10202889A (ja) * | 1997-01-24 | 1998-08-04 | Hitachi Koki Co Ltd | インク噴射記録ヘッドの製造方法および記録装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1684830A (zh) | 2005-10-19 |
US20050128253A1 (en) | 2005-06-16 |
US7125104B2 (en) | 2006-10-24 |
US20070064051A1 (en) | 2007-03-22 |
JP2004130579A (ja) | 2004-04-30 |
EP1570989A1 (en) | 2005-09-07 |
KR20050055620A (ko) | 2005-06-13 |
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