WO1998050928A1 - Procede de fabrication d'un composant electronique - Google Patents
Procede de fabrication d'un composant electronique Download PDFInfo
- Publication number
- WO1998050928A1 WO1998050928A1 PCT/JP1998/001978 JP9801978W WO9850928A1 WO 1998050928 A1 WO1998050928 A1 WO 1998050928A1 JP 9801978 W JP9801978 W JP 9801978W WO 9850928 A1 WO9850928 A1 WO 9850928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electronic component
- multilayer
- sheet
- producing
- component according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
-
- 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
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
-
- 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
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
- H01G4/206—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 inorganic and synthetic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/43—Electric condenser making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/43—Electric condenser making
- Y10T29/435—Solid dielectric type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1372—Randomly noninterengaged or randomly contacting fibers, filaments, particles, or flakes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31511—Of epoxy ether
- Y10T428/31529—Next to metal
Definitions
- the present invention relates to a method for manufacturing an electronic component having a fine multilayer structure, and more particularly, to a method for manufacturing a multilayer multilayer electronic component such as a multilayer ceramic capacitor and a multilayer inductor.
- a multilayer laminated ceramic capacitor which is the most typical example of a multilayer laminated electronic component
- a large number of dielectric ceramic layers having internal electrodes are stacked, and the internal electrodes are alternately drawn to the end face of the laminated body.
- External electrodes are formed on the end faces of the laminate from which these internal electrodes are drawn.
- multilayer thin ceramic capacitors have been manufactured by laminating extremely thin green sheets having a thickness of 10 im or less. In order to manufacture such a capacitor with good yield, it is necessary to print on such an extremely thin green sheet with high accuracy and to laminate the sheets. In this case, the ceramic green sheet is extremely thin, so when transporting, printing, and laminating it, care must be taken to prevent the green sheet from stretching or distorting.
- ceramic green sheets are formed by applying a ceramic slurry to a fixed film thickness on a carrier film such as a polyethylene terephthalate film and drying.
- a carrier film such as a polyethylene terephthalate film
- a ceramic green sheet formed on a carrier film is punched together with the carrier film, and this peripheral portion is glued to a frame-shaped frame.
- the frame is set on a printing machine, the electrode pattern is printed on the green sheet, and dried.
- the dary seat is positioned and printed based on the frame.
- the green sheet is punched out together with the carrier film inside the frame, and set on the crimping table of the temporary crimping machine.
- the lowermost green sheet is placed on the temporary crimping table with the carrier film side down, the green sheet is placed thereon with the carrier film side up, and the carrier sheet is peeled off.
- a pressure is applied to the green sheets laminated from above without leaving the carrier film of the green sheet of the uppermost layer and leaving the carrier film, and temporarily press-bonded.
- the preliminarily pressure-bonded laminate is placed in a mold and subjected to final pressure bonding.
- the carrier film attached to the uppermost layer and the lowermost layer of the laminate is peeled off, and a laminate of a plurality of electronic components is completed. It is needless to say that the stacking order of the green sheets in this case is such that the electrode patterns are alternately drawn out to the end face of the multilayer body in each multilayer chip capacitor.
- the laminate thus laminated is cut into chips for each individual electronic component unit. Further, while exposing the internal electrode from the end face of the chip and barrel-polishing the chip so that cracks are unlikely to occur, the chip is fired in a firing furnace. After that, external electrodes are applied to both ends of the fired chip and baked to complete the multilayer ceramic capacitor.
- a positioning hole is opened in the ceramic green sheet cut together with the carrier film, and a positioning pin of a transport head is inserted into the positioning hole, and the green sheet cut in a positioned state is inserted. Since the transport frame is held together with the carrier film by the transport head and transported onto a printing table or a laminating table, accurate positioning is performed using only the transport head without using a frame-like frame.
- the green sheet can be transported together with the carrier tape to a printing table or a laminating table. In addition, since the carrier tape can be held and transported by the transport head, the green sheet does not stretch or warp.
- 510/035/1985 discloses a microporous sheet made of a polyethylene polymer containing an inorganic filler and a ceramic green for a multilayer porcelain capacitor. It is disclosed for use as a sheet.
- a method for producing a multilayer ceramic capacitor with high quality and high efficiency from the above-mentioned microporous sheet as a ceramic green sheet and there is no problem with the method using a carrier film. At present, no solution has been reached.
- the present invention solves the conventional problems of manufacturing a multilayer electronic component such as a multilayer ceramic capacitor or a multilayer inductor using a ceramic sheet formed on a carrier film.
- An object of the present invention is to provide a method for manufacturing a multilayer electronic component, which is capable of simplifying a production process and improving a yield with high quality.
- An electrode layer forming agent is formed on the surface, containing 45 to 80% by volume of inorganic filler, thickness of 25 or less, tensile strength of 3 kg Zmm 2 or more in length, lkg Zmm 2 or more in width, MD direction (A) unwinding the sheet from a wound polyethylene microporous sheet having an elongation of 30% or less, (b) cutting the sheet into a predetermined length, and (c) cutting the sheet. And (d) forming the multilayer body by a cutting step of the laminated body.
- the method for producing a multilayer laminated electronic component according to the above further comprising (c ′) a step of compressing the laminated body between the (c) laminating step and (d) the cutting step.
- the method for producing a multilayer laminated electronic component according to the above further comprising (e) a binder removal step and (f) a firing step after the (d) cutting step.
- FIG. 1 shows the fine polyethylene containing inorganic filler used in the present invention. It is an electron micrograph (magnification: X10,000) viewed from the plane of the perforated sheet.
- FIG. 2 (FIG. 2) is an electron micrograph (magnification: X 10,000) viewed from a cross section of the microporous sheet.
- a wound product of a polyethylene microporous sheet containing an inorganic filler is prepared.
- the wound product is a microporous polyethylene polymer sheet having a thickness of 25 m or less and containing an inorganic filler in an amount of 45% by volume or more and 80% by volume or less.
- a sheet continuously formed with an area occupancy of 10 to 90% at intervals is a rolled electronic component green sheet wound in a roll form, and the polyethylene in the microporous sheet is: It can have a polyethylene polymer having a molecular weight of 4 X 10 5 to 15 X 10.
- the method for producing the microporous sheet containing such an inorganic filler is not particularly limited. For example, it can be produced in accordance with the method described in W091 / 01346 (Japanese Translation of PCT International Publication No. 4-1500835). The disclosure of the specification is incorporated herein.
- the polyethylene polymer in the present invention is basically an ultrahigh molecular weight polyethylene, for example, having a weight average molecular weight of at least 4 ⁇ 10 gZmol, preferably at least 8 ⁇ 10 gZmol.
- the high molecular weight side is not particularly limited, but may be, for example, 15 ⁇ 10 6 g / mo 1 e or less.
- the ratio between the weight average molecular weight and the number average molecular weight can take a wide value, but is preferably 10 or less, more preferably 5 or less.
- the inorganic filler to be contained is selected according to the function of the intended electronic component, and is not particularly limited, but may be any substance or substance that can be sintered by itself. Which mixture was added, for example, S I_ ⁇ 2, A l 2 ⁇ 3, B aT I_ ⁇ 3, Y 2 ⁇ 3 S i 3 N 4 were mixed, the use of S i C a mixture of boron compound Can be.
- the content of such an inorganic filler is not particularly limited as long as the obtained film-like material maintains its independence, and the larger the better, the better. 8080% by volume, preferably 50-70% by volume. This is approximately equal to 80-98% by weight, preferably 85-95% by weight, when converted to% by weight.
- microporous polyethylene sheet containing an inorganic filler in the present invention is unstretched or stretched, and preferably uniaxially or biaxially stretched.
- the elongation ratio is 25 to 400 times, typically biaxially stretched 6 to 20 times long and 6 to 20 times wide.
- the tensile strength is 3 kg / mm 2 or more, preferably 4 kg / mm 2 or more, more preferably 6 kg Zmm 2 or more in the winding direction (MD direction).
- MD direction winding direction
- the tensile strength in the direction (TD direction) perpendicular to the MD direction is not particularly great need, usually 1 k gZmm 2 or more, preferably 1. 5 kg / mm 2 or more.
- the elongation (elongation at the maximum stress point) is 30% or less in the MD direction, and preferably 20% or less.
- the TD direction is not particularly limited, but is usually 200% or less, preferably 150% or less.
- Such an inorganic filler-containing polyethylene microporous sheet of the present invention can have a thickness of 25 m or less, and preferably 13 m or less. These can be heat treated to improve their thermal and / or mechanical properties, with the conditions for such heat treatment being 60-120 ° C, 0:! ⁇ 2.0 hours And under a nitrogen atmosphere.
- the microstructure of the thus-formed inorganic filler-containing polyethylene microporous sheet is preferably a multilayer nonwoven fabric.
- the multilayer non-woven fabric When viewed from the plane of the sheet, the multilayer non-woven fabric is as shown in Fig. 1; Although the fibers of m are entangled, when viewed from the cross section of the sheet, as shown in FIG. 2, it is observed that the fibers are formed by stacking several layers. This does not necessarily mean that a nonwoven fabric is formed in advance and then combined in multiple layers.
- the wound product of the present invention is a wound product in which an electrode layer forming agent (which may be an electrode layer precursor or an electrode layer) is provided on the inorganic filler-containing sheet.
- an electrode layer forming agent which may be an electrode layer precursor or an electrode layer
- many such electrode layer formers are known in the art.
- it is an ink-like or paste-like material containing metal particles with a particle size of 0.03 to 3 tm, and is adjusted to form the layer using a printing method such as screen printing or gravure printing.
- the layer can be directly formed by a vacuum evaporation method, a sputtering method, or the like.
- the electrode layer forming agent is continuously formed on the sheet surface at a predetermined interval in the width direction and the length direction of the sheet, and its area occupancy is 10 to 90%. It is desirable that
- the electrode layer forming agent is an electrode layer precursor
- post-formation treatment eg, drying
- the wound product may contain a solvent having a boiling point of 200 ° C or less during the formation process, but the content must be 5.5% by weight or less, preferably 1.0% by weight or less. It is.
- the present invention provides: (a) a step of unwinding the sheet, (b) a step of cutting the sheet into a predetermined length, (c) a step of laminating the cut sheet,
- the unwinding tension needs to be 10 kgZm or less.
- the sheet thus unwound is cut to a predetermined length by a cutting means, preferably using a sharp blade, preferably in a sliding motion. At this time, of course, the cutting must be performed in consideration of the electrode layer pattern.
- the cut sheets are laminated.
- the patterns of the electrode layers of each cutting sheet must be positioned and laminated so as to have a predetermined positional relationship with each other.
- the conditions of the laminating step (c) are performed at a temperature of 40 to 150 ° C., preferably 60 to 120 ° C., at a pressure of 0.5 to 1 OMPa, and preferably at 1 to 4 MPa for 2 to 10 seconds. This pressing may be performed for each lamination, or may be performed after lamination to some extent or all.
- an ineffective layer When laminating sheets, a layer without electrodes (ineffective layer) is laminated above and below the laminated part of the effective layer including electrodes.
- This ineffective layer can be used by previously laminating it by a necessary thickness, or it can be formed by laminating one layer at a time.
- the laminate is dried at a temperature of 40 to 80 ° C., preferably 55 to 65 ° C. in the air or a nitrogen atmosphere, and the laminate can be subjected to a compression step (c ′).
- the compression is carried out at a temperature of 100 to 200 ° C., preferably 150 to 170 ° C., a pressure of 1 to 80 MPa, preferably 3 to 50 MPa, and a time of 1 to 10 minutes.
- each laminated electronic component or its precursor is formed in consideration of the electrode layer pattern.
- the multilayered electronic component precursor obtained above can be subjected to a binder removal step (e) for removing polyethylene and a firing step (f) of an inorganic filler.
- the debinding step is preferably performed in the absence of oxygen, for example, in a nitrogen atmosphere at a temperature of 350 to 550 ° C. for 10 to 150 hours.
- the decomposition and combustion reaction of the binder may occur rapidly at a specific temperature.Thus, conduct a thermal analysis of the multilayered electronic component precursor in advance to investigate changes in weight due to heating, etc. It is desirable to determine the heating pattern of the binder removal process.
- polyethylene is thermally decomposed at around 450 ° C.
- the heating rate is reduced to 0 ° C. and finally heated to 500 ° C.
- the conditions of the subsequent firing step vary depending on the inorganic filler used, but the point is that the inorganic filler may be sintered to form an integrated inorganic phase.
- This step is the same as the step conventionally performed in the manufacturing process of the Sekisai ceramic capacitor 1, and the conventional conditions and the like can be used as it is.
- the firing temperature varies greatly depending on the ceramic powder used, so it is necessary to determine the optimum conditions for each ceramic powder as in the conventional method.
- the obtained film After being sent to an extruder and extruded at 170 ° C., the obtained film was quenched in water, and the solvent was removed by drying. Then, the obtained film was biaxially stretched at 125 ° C at a stretching ratio of 10 times in the machine direction and 10 times in the transverse direction to obtain an inorganic filler-containing porous film.
- an electrode pattern of a conductive paste was formed on the surface by offset printing.
- the pattern was a unit of 7 mm x 2 mm, with a 6 mm x lmm rectangular conductive paste electrode printing section in the center, and was continuously printed on the film surface.
- the area occupancy of the electrode was 43%.
- the conductive paste contained a metal component of AgZPd, and the applied amount after drying was 3 mg / cm 2 .
- the electrode-printed film was wound up into a roll at a winding density of 5 g / cm 3 .
- the film was cut out to a predetermined length while being pulled out from the roll, and laminated while shifting the electrode pattern by a half pitch.
- the number of effective layers is 25, and the last part is a film with no electrode printed.
- This laminate was heated and compressed at 150 ° C. and 40 MPa. After cutting the laminated film to the size of the capacitor, it was heated and fired to obtain a laminated ceramic capacitor.
- the thickness of the effective layer was about 4 / xm, and the capacitance was 0.48. The results are shown in Table 1.
- Examples 2 and 3 and Comparative Examples 1 and 2 A multilayer ceramic capacitor was obtained in the same manner as in Example 1 except that the size of the electrode was changed. The results are shown in Table 1.
- Example 1 Same as Example 1 except that So 1 ufi 11 registered trademark (manufactured by DSM Slutech, Netherlands: ceramic powder TAM262L, thickness after firing: 10 wm) was used as a polyethylene film containing barium titanate. A multilayer ceramic capacitor was obtained. The results are shown in Table 1.
- Example 1 the calculated capacitance was obtained in proportion to the area occupied by the electrodes.
- Example 4 since the effective layer thickness was large, the capacity was reduced accordingly.
- Comparative Example 1 the capacity was reduced by half compared to the value estimated from the occupied area. This is because the effective electrode area was reduced due to misalignment during lamination.
- Comparative Example 2 the yield at cutting was reduced. This is because, in the pattern of Comparative Example 2, the gap between the electrodes was only 0.1 mm or less due to the misalignment during lamination, and even the slight misalignment at the time of cutting could disturb the electrode printed part. Because there are many.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Ceramic Capacitors (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/147,424 US6473950B1 (en) | 1997-05-07 | 1998-04-30 | Method of manufacturing electronic component |
| EP98917741A EP0936641A4 (en) | 1997-05-07 | 1998-04-30 | METHOD FOR MANUFACTURING AN ELECTRONIC COMPONENT |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11677897 | 1997-05-07 | ||
| JP9/116778 | 1997-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998050928A1 true WO1998050928A1 (fr) | 1998-11-12 |
Family
ID=14695491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/001978 Ceased WO1998050928A1 (fr) | 1997-05-07 | 1998-04-30 | Procede de fabrication d'un composant electronique |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6473950B1 (ja) |
| EP (1) | EP0936641A4 (ja) |
| KR (1) | KR20000022362A (ja) |
| CN (1) | CN1139085C (ja) |
| ID (1) | ID22057A (ja) |
| MY (1) | MY119639A (ja) |
| TW (1) | TW396354B (ja) |
| WO (1) | WO1998050928A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3538348B2 (ja) | 1999-10-07 | 2004-06-14 | 松下電器産業株式会社 | セラミック電子部品の製造方法 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3407710B2 (ja) * | 2000-04-26 | 2003-05-19 | 株式会社村田製作所 | 誘電体線路の製造方法 |
| DE10336380B4 (de) * | 2003-08-06 | 2005-08-25 | Carl Freudenberg Kg | Ultradünner, poröser und mechanisch stabiler Vliesstoff und dessen Verwendung |
| US9390857B2 (en) | 2008-09-30 | 2016-07-12 | General Electric Company | Film capacitor |
| SG175763A1 (en) * | 2009-05-01 | 2011-12-29 | 3M Innovative Properties Co | Passive electrical article |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213562A (ja) * | 1996-02-01 | 1997-08-15 | Murata Mfg Co Ltd | 積層セラミック電子部品の製造方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5869252A (ja) | 1981-10-21 | 1983-04-25 | Kureha Chem Ind Co Ltd | 誘電体フイルムおよびその製造方法 |
| US5014158A (en) * | 1989-04-11 | 1991-05-07 | Matsushita Electric Industrial Co., Ltd. | Laminated ceramic capacitor |
| NL8901872A (nl) | 1989-07-20 | 1991-02-18 | Stamicarbon | Dunne zelfdragende anorganische groenlingen, en werkwijze voor het bereiden van dergelijke groenlingen. |
| JP2704562B2 (ja) * | 1990-07-19 | 1998-01-26 | 株式会社村田製作所 | 積層セラミックコンデンサの製造方法 |
| NL9101108A (nl) | 1991-06-26 | 1993-01-18 | Dsm Nv | Samengestelde groene keramische laag. |
| JPH05326315A (ja) * | 1992-05-25 | 1993-12-10 | Itochu Fine Chem Kk | 薄膜コンデンサおよびその製造装置 |
| US5830548A (en) * | 1992-08-11 | 1998-11-03 | E. Khashoggi Industries, Llc | Articles of manufacture and methods for manufacturing laminate structures including inorganically filled sheets |
| JPH0793231A (ja) | 1993-09-24 | 1995-04-07 | Nec Corp | オンラインシステムにおける業務データの保障方式 |
| DE4334059A1 (de) * | 1993-10-06 | 1995-04-13 | Philips Patentverwaltung | Schichtverbundfolie, Mehrfarbensiebdruckverfahren zu ihrer Herstellung und ihre Verwendung |
| US5709948A (en) * | 1995-09-20 | 1998-01-20 | Minnesota Mining And Manufacturing Company | Semi-interpenetrating polymer networks of epoxy and polyolefin resins, methods therefor, and uses thereof |
-
1998
- 1998-04-30 ID IDW990004D patent/ID22057A/id unknown
- 1998-04-30 KR KR1019980710792A patent/KR20000022362A/ko not_active Ceased
- 1998-04-30 EP EP98917741A patent/EP0936641A4/en not_active Withdrawn
- 1998-04-30 US US09/147,424 patent/US6473950B1/en not_active Expired - Fee Related
- 1998-04-30 WO PCT/JP1998/001978 patent/WO1998050928A1/ja not_active Ceased
- 1998-04-30 CN CNB988006073A patent/CN1139085C/zh not_active Expired - Fee Related
- 1998-04-30 TW TW087106685A patent/TW396354B/zh not_active IP Right Cessation
- 1998-05-05 MY MYPI98001982A patent/MY119639A/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09213562A (ja) * | 1996-02-01 | 1997-08-15 | Murata Mfg Co Ltd | 積層セラミック電子部品の製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3538348B2 (ja) | 1999-10-07 | 2004-06-14 | 松下電器産業株式会社 | セラミック電子部品の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1226995A (zh) | 1999-08-25 |
| TW396354B (en) | 2000-07-01 |
| ID22057A (id) | 1999-08-26 |
| US6473950B1 (en) | 2002-11-05 |
| KR20000022362A (ko) | 2000-04-25 |
| CN1139085C (zh) | 2004-02-18 |
| EP0936641A4 (en) | 2000-02-02 |
| MY119639A (en) | 2005-06-30 |
| EP0936641A1 (en) | 1999-08-18 |
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