JPH0317207B2 - - Google Patents
Info
- Publication number
- JPH0317207B2 JPH0317207B2 JP59224193A JP22419384A JPH0317207B2 JP H0317207 B2 JPH0317207 B2 JP H0317207B2 JP 59224193 A JP59224193 A JP 59224193A JP 22419384 A JP22419384 A JP 22419384A JP H0317207 B2 JPH0317207 B2 JP H0317207B2
- Authority
- JP
- Japan
- Prior art keywords
- internal electrode
- ceramic
- sheet
- punching
- ceramic capacitor
- 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.)
- Expired - Lifetime
Links
- 239000000919 ceramic Substances 0.000 claims description 19
- 239000003985 ceramic capacitor Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 238000004080 punching Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000002003 electrode paste Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Ceramic Capacitors (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電子部品として用いられる積層セラミ
ツクコンデンサの製造方法の改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a method for manufacturing a laminated ceramic capacitor used as an electronic component.
（従来の技術）
従来、積層セラミツクコンデンサは、誘電体を
含むセラミツク生シートの上に粉末状の導電材料
を含む内部電極ペーストを印刷、乾燥した後、パ
ターンの位置合せ、打抜きして得られたシートを
複数枚積層し、熱圧着して積層体を形成し、これ
を所定の形状に切断し、脱バインダ、焼成した
後、外部電極付けという工程を経て製造されてい
る。(Prior art) Conventionally, multilayer ceramic capacitors were obtained by printing an internal electrode paste containing a powdered conductive material on a raw ceramic sheet containing a dielectric, drying it, aligning the pattern, and punching it out. It is manufactured by laminating a plurality of sheets and bonding them under heat to form a laminate, cutting this into a predetermined shape, removing the binder, firing, and then attaching external electrodes.
（発明が解決しようとする問題点）
従来の積層セラミツクコンデンサの製造方法に
おいては、セラミツク生シートにオープンポアが
ある場合、内部電極ペーストの印刷時にペースト
がオープンポア内に入り込み、第４図に示す如く
製造したセラミツクコンデンサ１５の内部電極１
６に凹凸１８ができる。また、流動性のあるペー
ストをセラミツク生シート１の上に印刷するた
め、内部電極ペーストの印刷時にペーストの糸引
きが生じ易く、これがこぶになり内部電極１６に
凹凸１８ができる。このため、対向電極間の距離
が不均一になり、短かい部分は相対的に臨界強度
が低下し、この部分で電流がリークしてシヨート
モードとなり、コンデンサとしての信頼性を低下
させる原因になつていた。(Problems to be Solved by the Invention) In the conventional manufacturing method of multilayer ceramic capacitors, if there are open pores in the raw ceramic sheet, the paste gets into the open pores when printing the internal electrode paste, resulting in the problem shown in FIG. Internal electrode 1 of ceramic capacitor 15 manufactured as follows
Unevenness 18 is formed on 6. Furthermore, since a fluid paste is printed on the raw ceramic sheet 1, threading of the paste tends to occur during printing of the internal electrode paste, which becomes bumps and creates unevenness 18 on the internal electrode 16. As a result, the distance between the opposing electrodes becomes uneven, and the critical strength is relatively reduced in the short part, causing current to leak in this part and resulting in short mode, which reduces the reliability of the capacitor. Ta.
（問題点を解決するための手段）
本発明は前記の不具合を解決するためになされ
たものであつて、予め成形した導電材料を含む内
部電極シート２とセラミツク生シート１とをそれ
ぞれ個別の保持、打抜き手段で並行して所定の形
状に打抜き交互に積重ねて所定枚数の積層体を熱
圧着して成形することにより、対向電極間のセラ
ミツク１７及び内部電極１６の厚みの均一な信頼
性の高いセラミツクコンデンサ１５を得ることを
可能にしたものである。(Means for Solving the Problems) The present invention has been made in order to solve the above-mentioned problems, and has the purpose of holding a pre-formed internal electrode sheet 2 containing a conductive material and a raw ceramic sheet 1 separately. By punching out a predetermined shape in parallel using a punching means and stacking the predetermined number of laminates alternately and thermocompression bonding, the thickness of the ceramic 17 between the opposing electrodes and the internal electrode 16 can be made uniform and highly reliable. This makes it possible to obtain a ceramic capacitor 15.
（実施例）
セラミツク素材としてPb〔（Nb1/2、Fe1/2）0.6
７、（Ｗ1/3、Fe2/3）0.33〕O3を組成とする複合ペ
ロブスカイト系誘電体材料を使用した。この材料
の粉末にPVBと溶剤とを混合してスラリーを作
成し、ドクターブレイド法により基板フイルムに
塗布した後、乾燥し40μｍ膜厚のセラミツク生シ
ート１を作成した。また、内部電極材料としては
銀粉、パラジウム粉を重量比８：２の割合で混合
したものを使用し、これにPVBと溶剤とを混合
してスラリーを作成し、セラミツク生シート１と
同様にドクターブレイド法により基板フイルムに
塗布した後、乾燥し8μｍの内部電極材料シート
２を作成した。(Example) Pb [(Nb1/2, Fe1/2) 0.6 as a ceramic material
7. A composite perovskite dielectric material having a composition of (W1/3, Fe2/3) 0.33 ] O3 was used. A slurry was prepared by mixing the powder of this material with PVB and a solvent, which was applied to a substrate film by a doctor blade method and dried to form a raw ceramic sheet 1 having a film thickness of 40 μm. In addition, as the internal electrode material, a mixture of silver powder and palladium powder at a weight ratio of 8:2 was used, and this was mixed with PVB and a solvent to create a slurry. After applying it to a substrate film by the braiding method, it was dried to create an internal electrode material sheet 2 with a thickness of 8 μm.
このようにして作成したセラミツク生シート１
と内部電極材料シート２とを第１図に示す如く、
それぞれセラミツクシートキヤリヤ３及び電極シ
ートキヤリヤ４から巻戻し、基板フイルム５，
５′と剥離しながらパンチ工程に送る。パンチ工
程に送られたセラミツク生シート１は、パンチ兼
ハンドラ６により所定の形状のセラミツクシート
７に打抜かれ金型８に搬送される。同様に、内部
電極材料シート２もパンチ兼ハンドラ９により所
定の形状の内部電極シート１０に打抜かれ、金型
８に搬送され、先に金型８に搬送されたセラミツ
クシート７上に積重ねられる。 Ceramic raw sheet 1 created in this way
and the internal electrode material sheet 2 as shown in FIG.
Unwinding from the ceramic sheet carrier 3 and electrode sheet carrier 4, respectively, the substrate film 5,
It is sent to the punching process while being peeled off as 5'. The raw ceramic sheet 1 sent to the punching process is punched into a ceramic sheet 7 of a predetermined shape by a punch/handler 6 and conveyed to a mold 8. Similarly, the internal electrode material sheet 2 is punched out into an internal electrode sheet 10 having a predetermined shape by a punch/handler 9, transported to a mold 8, and stacked on the ceramic sheet 7 that was previously transported to the mold 8.
このようにして、セラミツクシート７と内部電
極シート１０とを交互に所定枚数金型８内に積層
し、熱圧着し積層体を成形する。なお、１１，１
１′は基板フイルム巻取キヤリヤ、１２，１２′は
打抜きくずシート収納容器である。 In this way, a predetermined number of ceramic sheets 7 and internal electrode sheets 10 are alternately laminated in the mold 8 and bonded under heat and pressure to form a laminate. In addition, 11,1
1' is a substrate film winding carrier, and 12 and 12' are punched waste sheet storage containers.
前記の如くして成形した積層体を公知の方法で
チツプに切断した後、焼成し、両端面に外部電極
１３，１４を接着して第２図に示す如き外観を有
するセラミツクコンデンサ１５が得られる。この
ようにして得られたセラミツクコンデンサ１５を
切断して内部形状を検査したところ、第３図に示
すように内部電極１６には凹凸の発生は殆んどな
く、対向電極間のセラミツク１７及び内部電極１
６の厚みは均一なものであつた。 The laminate formed as described above is cut into chips by a known method and then fired, and external electrodes 13 and 14 are bonded to both end faces to obtain a ceramic capacitor 15 having an appearance as shown in FIG. . When the thus obtained ceramic capacitor 15 was cut and its internal shape was inspected, as shown in FIG. Electrode 1
The thickness of No. 6 was uniform.
（発明の効果）
本発明によれば、セラミツクシートと内部電極
シートの打抜きをパンチ兼ハンドラで個別的に並
行して行いながら各シートを交互に積層すること
で積層までの工程を効率良く行うことができるの
で生産性の向上に寄与する。しかも本発明によれ
ば、内部電極に凹凸の発生がなく、対向電極間の
セラミツク及び内部電極の厚みの均一な電気的特
性の良い信頼性の高いセラミツクコンデンサを得
ることができる。(Effects of the Invention) According to the present invention, the process up to lamination can be carried out efficiently by punching the ceramic sheet and the internal electrode sheet individually and in parallel using a punch/handler and laminating each sheet alternately. This contributes to improved productivity. Furthermore, according to the present invention, it is possible to obtain a highly reliable ceramic capacitor with good electrical characteristics, without unevenness on the internal electrodes, and with a uniform thickness of the ceramic between the facing electrodes and the internal electrodes.
第１図は本発明方法を実施するための装置の一
例を示す概略図、第２図はセラミツクコンデンサ
の外観図、第３図は本発明方法により製造したセ
ラミツクコンデンサの断面図、第４図は従来方法
により製造したセラミツクコンデンサの断面図で
ある。
１：セラミツク生シート、２：内部電極シー
ト、１５：セラミツクコンデンサ、１６：内部電
極、１７：セラミツク。
Fig. 1 is a schematic diagram showing an example of an apparatus for carrying out the method of the present invention, Fig. 2 is an external view of a ceramic capacitor, Fig. 3 is a sectional view of a ceramic capacitor manufactured by the method of the present invention, and Fig. 4 is a schematic diagram showing an example of an apparatus for carrying out the method of the present invention. 1 is a cross-sectional view of a ceramic capacitor manufactured by a conventional method. 1: Raw ceramic sheet, 2: Internal electrode sheet, 15: Ceramic capacitor, 16: Internal electrode, 17: Ceramic.
Claims (1)
抗する複数の平行な内部電極を設けると共に、内
部電極引出し部に端子電極を設けてなる積層セラ
ミツクコンデンサの製造方法において、パンチ兼
ハンドラにより予め成形した導電材料を含む内部
電極シートに対して所定の形状に打抜きを行う工
程と別のパンチ兼ハンドラによりセラミツク生シ
ートに対して所定の形状に打抜きを行う工程とを
並行させ、かつ前記各パンチ兼ハンドラは打抜か
れた電極シートとセラミツクシートとを交互に積
重ねるように駆動され、積層終了後、該積層体を
熱圧着するようにしたことを特徴とする積層セラ
ミツクコンデンサの製造方法。1. In a method for manufacturing a multilayer ceramic capacitor in which a plurality of parallel internal electrodes are provided inside dielectric ceramics in a layered manner and terminal electrodes are provided in the internal electrode lead-out portion, A step of punching an internal electrode sheet containing a conductive material into a predetermined shape and a step of punching a raw ceramic sheet into a predetermined shape with another punch and handler are performed in parallel, and each of the punches and handlers 1. A method for producing a multilayer ceramic capacitor, characterized in that the die-cut electrode sheets and ceramic sheets are driven to be alternately stacked, and after the stacking is completed, the stack is thermocompression bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22419384A JPS61102719A (en) | 1984-10-26 | 1984-10-26 | Manufacture of laminated ceramic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22419384A JPS61102719A (en) | 1984-10-26 | 1984-10-26 | Manufacture of laminated ceramic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61102719A JPS61102719A (en) | 1986-05-21 |
| JPH0317207B2 true JPH0317207B2 (en) | 1991-03-07 |
Family
ID=16809974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22419384A Granted JPS61102719A (en) | 1984-10-26 | 1984-10-26 | Manufacture of laminated ceramic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61102719A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6331104A (en) * | 1986-07-24 | 1988-02-09 | 株式会社村田製作所 | Manufacture of laminated ceramic capacitor |
| JPS6332909A (en) * | 1986-07-25 | 1988-02-12 | 株式会社村田製作所 | Manufacture of laminated ceramic capacitor |
| WO1989008923A1 (en) | 1988-03-07 | 1989-09-21 | Matsushita Electric Industrial Co., Ltd. | Method of producing laminated ceramic electronic parts |
| JPH0670941B2 (en) * | 1988-12-15 | 1994-09-07 | 株式会社村田製作所 | Manufacturing method of multilayer capacitor |
| JPH0779069B2 (en) * | 1991-03-11 | 1995-08-23 | 太陽誘電株式会社 | Method and apparatus for laminating ceramic green sheet |
| EP0923094B1 (en) | 1997-12-03 | 2006-09-20 | TDK Corporation | Multilayer ceramic electronic element and manufacturing method therefor |
-
1984
- 1984-10-26 JP JP22419384A patent/JPS61102719A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61102719A (en) | 1986-05-21 |
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