JP4299833B2 - 電極段差吸収用印刷ペーストおよび電子部品の製造方法 - Google Patents
電極段差吸収用印刷ペーストおよび電子部品の製造方法 Download PDFInfo
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- JP4299833B2 JP4299833B2 JP2005504186A JP2005504186A JP4299833B2 JP 4299833 B2 JP4299833 B2 JP 4299833B2 JP 2005504186 A JP2005504186 A JP 2005504186A JP 2005504186 A JP2005504186 A JP 2005504186A JP 4299833 B2 JP4299833 B2 JP 4299833B2
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Classifications
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Description
セラミック粉体と、バインダ樹脂と、可塑剤と、溶剤とを有する電極段差吸収用印刷ペーストであって、
前記バインダ樹脂が、ポリビニルブチラール樹脂またはポリアセタール樹脂を含み、その樹脂の重合度が1400以上であり、ブチラール化度が64〜74モル%で、アセタール化度が66〜74モル%であることを特徴とする。
グリーンシートと所定パターンの電極層とを積層させて積層体を形成する工程と、前記積層体を焼成する工程と、を有する電子部品の製造方法であって、
前記積層体を形成する前に、所定パターンの前記電極層の隙間部分には、前記電極層と実質的に同じ厚みの余白パターン層を形成し、
前記余白パターン層を形成するための電極段差吸収用印刷ペーストとして、上記のいずれかに記載の電極段差吸収用印刷ペーストを用いることを特徴とする。
グリーンシートと所定パターンの電極層とを積層させて積層体を形成する工程と、前記積層体を焼成する工程と、を有する電子部品の製造方法であって、
前記積層体を形成する前に、所定パターンの前記電極層の隙間部分には、前記電極層と実質的に同じ厚みの余白パターン層を形成し、
前記余白パターン層を形成するための電極段差吸収用印刷ペーストが、セラミック粉体と、バインダ樹脂とを少なくとも含み、
前記電極段差吸収用印刷ペーストに含まれるバインダ樹脂の重合度が、前記グリーンシートを形成するためのスラリーに含まれるバインダ樹脂の重合度と同等以上、好ましくは高く設定してあることを特徴とする。
図1は本発明の一実施形態に係る積層セラミックコンデンサの概略断面図、図2A〜図2Cおよび図3A〜図3Cは電極層の転写方法を示す要部断面図、図4A〜図4C、図5A〜図5C、図6A〜図6C、図7および図8は電極層が接着されたグリーンシートの積層方法を示す要部断面図である。
発明を実施するための最良の態様
グリーンシート用スラリー
剥離層
電極層
余白パターン層
接着層
積層体の形成
脱バインダおよび焼成
昇温速度:5〜300℃/時間、特に10〜50℃/時間、
保持温度:200〜400℃、特に250〜350℃、
保持時間:0.5〜20時間、特に1〜10時間、
雰囲気 :加湿したN2とH2との混合ガス。
昇温速度:50〜500℃/時間、特に200〜300℃/時間、
保持温度:1100〜1300℃、特に1150〜1250℃、
保持時間:0.5〜8時間、特に1〜3時間、
冷却速度:50〜500℃/時間、特に200〜300℃/時間、
雰囲気ガス:加湿したN2とH2との混合ガス等。
保持時間:0〜6時間、特に2〜5時間、
冷却速度:50〜500℃/時間、特に100〜300℃/時間、
雰囲気用ガス:加湿したN2ガス等。
グリーンシートの作製
剥離層用スラリー
接着層用スラリー
内部電極用ペースト(転写される電極層用ペースト)
BaTiO3粉末(BT−01/堺化学工業(株)):20重量部、
有機ビヒクル:58質量部(ポリビニルブチラール樹脂8質量部をターピネオール92質量部に溶解したもの)、
可塑剤としてフタル酸ビス(2ヘチルヘキシル)DOP:50質量部、
ターピネオール:5質量部、
分散剤 :1重量部、
を添加して、ボールミルにより混練し、スラリー化して内部電極用ペーストとした。
電極段差吸収用印刷ペーストの作製
比較例1
参考例1
Claims (15)
- セラミック粉体と、バインダ樹脂と、可塑剤と、溶剤とを有する電極段差吸収用印刷ペーストであって、
前記バインダ樹脂が、ポリビニルブチラール樹脂またはポリビニルアセタール樹脂を含み、その樹脂の重合度が1400以上であり、ブチラール化度が64〜74モル%で、アセタール化度が66〜74モル%であり、剪断速度が8[l/s]となる回転を付与したときの前記電極段差吸収用印刷ペーストの粘度は、5Pa・s以上29Pa・s以下であり、前記電極段差吸収用印刷ペーストには、セラミック粉体が、ペースト全体に対して、30〜55質量%の割合で含まれ、前記電極段差吸収用印刷ペーストには、前記可塑剤が、前記バインダ樹脂100質量部に対して、50〜100質量部含まれることを特徴とする電極段差吸収用印刷ペースト。 - 前記バインダ樹脂が前記セラミックス粉体100質量部に対して3質量部以上9質量部以下で含まれる請求項1に記載の電極段差吸収用印刷ペースト。
- 前記溶剤が、テルピネオール、ジヒドロテルピネオール、ターピニルアセテート、ジヒドロターピニルアセテート、4−(1’−アセトキシ−1’−)シクロヘキサノールアセテートの内の少なくとも1つを含む請求項1に記載の電極段差吸収用印刷ペースト。
- 前記可塑剤として、フタル酸エステル[フタル酸ジブチル(DBP)、フタル酸ジオクチル(DOP)、フタル酸ベンジルブチル(BBP)、フタル酸ブチルブチレングリコール(BPBG)]、アジピン酸エステル[アジピン酸ジオクチル(DOA)]、セバシン酸エステル、セバシン酸ジブチルの内の少なくとも1つを含むことを特徴とする請求項1〜3のいずれかに記載の電極段差吸収用印刷ペースト。
- 帯電除剤として、吸湿性高分子、カチオン系界面活性剤(アミン系界面活性剤)、両性界面活性剤の少なくとも1つを含む請求項1〜4のいずれかに記載の電極段差吸収用印刷ペースト。
- グリーンシートと所定パターンの電極層とを積層させて積層体を形成する工程と、
前記積層体を焼成する工程と、を有する電子部品の製造方法であって、
前記積層体を形成する前に、所定パターンの前記電極層の隙間部分には、前記電極層と実質的に同じ厚みの余白パターン層を形成し、
前記余白パターン層を形成するための電極段差吸収用印刷ペーストとして、請求項1〜5のいずれかに記載の電極段差吸収用印刷ペーストを用いることを特徴とする電子部品の製造方法。 - 前記電極段差吸収用印刷ペーストに含まれるセラミック粉体が、前記グリーンシートを形成するためのスラリーに含まれるセラミック粉体と同じである請求項6に記載の電子部品の製造方法。
- 前記電極段差吸収用印刷ペーストに含まれるバインダ樹脂の重合度が、2400以上である請求項6または7に記載の電子部品の製造方法。
- 前記電極段差吸収用印刷ペーストに含まれるバインダ樹脂と、前記グリーンシートを形成するためのスラリーに含まれるバインダ樹脂とが、同じ種類である請求項6〜8のいずれかに記載の電子部品の製造方法。
- 前記バインダ樹脂が、ポリビニルブチラールおよび/またはポリビニルアセタールである請求項6〜9のいずれかに記載の電子部品の製造方法。
- 前記バインダ樹脂が、ポリビニルブチラールである場合に、前記ポリビニルブチラールのブチラール化度が64〜74モル%の範囲にある請求項10に記載の電子部品の製造方法。
- 前記バインダ樹脂が、ポリビニルアセタールである場合に、前記ポリビニルアセタールのアセタール化度が66〜74モル%の範囲にある請求項10に記載の電子部品の製造方法。
- 前記電極段差吸収用印刷ペーストには、セラミック粉体が、ペースト全体に対して、30〜50質量%の割合で含まれる請求項6〜12のいずれかに記載の電子部品の製造方法。
- 前記グリーンシートを形成するためのスラリーに含まれる前記バインダ樹脂が、ポリビニルブチラール樹脂を含み、そのポリビニルブチラール樹脂の重合度が1000以上3300以下であり、樹脂のブチラール化度が64%より大きく78%より小さく、残留アセチル基量が6%未満であることを特徴とする請求項6〜13のいずれかに記載の電子部品の製造方法。
- グリーンシートと所定パターンの電極層とを積層させて積層体を形成する工程と、
前記積層体を焼成する工程と、を有する電子部品の製造方法であって、
前記積層体を形成する前に、所定パターンの前記電極層の隙間部分には、前記電極層と実質的に同じ厚みの余白パターン層を形成し、
前記余白パターン層を形成するための電極段差吸収用印刷ペーストが、セラミック粉体と、バインダ樹脂とを少なくとも含み、
前記電極段差吸収用印刷ペーストに含まれるバインダ樹脂の重合度が、前記グリーンシートを形成するためのスラリーに含まれるバインダ樹脂の重合度と同等以上であることを特徴とする請求項6〜14のいずれかに記載の電子部品の製造方法。
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Cited By (2)
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JP2012028456A (ja) * | 2010-07-21 | 2012-02-09 | Murata Mfg Co Ltd | セラミック電子部品の製造方法、セラミック電子部品及び配線基板 |
US8819932B2 (en) | 2010-07-21 | 2014-09-02 | Murata Manufacturing Co., Ltd. | Method of manufacturing a ceramic electronic component |
Also Published As
Publication number | Publication date |
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CN100513352C (zh) | 2009-07-15 |
KR100693898B1 (ko) | 2007-03-12 |
TW200426864A (en) | 2004-12-01 |
TWI234175B (en) | 2005-06-11 |
EP1609771A1 (en) | 2005-12-28 |
EP1609771A4 (en) | 2011-05-04 |
US7641727B2 (en) | 2010-01-05 |
US20060191443A1 (en) | 2006-08-31 |
JPWO2004087608A1 (ja) | 2006-06-29 |
KR20050116905A (ko) | 2005-12-13 |
WO2004087608A1 (ja) | 2004-10-14 |
CN1798711A (zh) | 2006-07-05 |
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