JP4813538B2 - 拘束用グリーンシート及びこれを用いた多層セラミック基板の製造方法 - Google Patents
拘束用グリーンシート及びこれを用いた多層セラミック基板の製造方法 Download PDFInfo
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Description
ガラス−セラミック粉末100%に対してアクリル系バインダを15wt%、分散剤を0.5wt%添加し、トルエンとエタノールの混合溶媒を添加した後、ボールミルを用いて分散させた。こうして得られたスラリーをフィルターで濾した後脱泡し、ドクターブレード法を用いて50μm厚さのセラミックグリーンシートを成形した。セラミックグリーンシートを一定の大きさに裁断し、所定の電極パターンをスクリーン印刷により形成した後、20層を圧着及び積層し一体化された未焼結多層セラミック積層体を製造した。
下記の表1では、本発明の実施例1及び2と比較例1及び2に対する拘束用グリーンシートの種類別の条件が示された。その条件に従って、各実施例1及び2と比較例1及び2に必要な拘束用グリーンシートを下記のように製造した。
本発明の条件に該当する拘束用グリーンシートとして、第1拘束層及び第2拘束層を含む拘束用グリーンシートを製造した。密度3.95g/cm3及び平均粒径1.5μmを有するアルミナ粉末に対して、アクリル系バインダを15wt%、分散剤を0.5wt%、トルエンとエタノールの混合溶媒を夫々添加した後、ボールミルを用いて分散させ、第1スラリーを得た。
密度3.95g/cm3及び平均粒径4μmを有するアルミナ粉末に対して、アクリル系バインダを15wt%、分散剤を0.5wt%、トルエンとエタノールの混合溶媒を夫々添加した後、ボールミルを用いて分散させ、第1スラリーを得た。
本発明の実施例1及び実施例2と比較するための比較例として、密度3.95g/cm3及び平均粒径1.5μmを有するアルミナ粉末を単独で用いて、厚さ200μmの拘束用グリーンシートを製造した。
また、本発明の実施例1及び実施例2と比較するための比較例として、密度3.95g/cm3及び平均粒径4μmを有するアルミナ粉末を単独で用いて、厚さ200μmの拘束用グリーンシートを製造した。
未焼結セラミック積層体と同じ面積に裁断した厚さ200μmの拘束用グリーンシートを未焼結セラミック基板の上部及び下部に付着させ、圧力300kgf/cm2及び85℃の温度条件で熱圧着して一体化した積層体を製造した。
常温から有機物分解が行われる420℃まで毎時60℃の昇温を行い、さらに十分な脱バインダ時間を確保するため、420℃で2時間温度を維持した。脱バインダ後には、毎時300℃で昇温を行い、870℃の焼成温度に到達してから、870℃で30分間温度を維持し、焼結が行われるようにした。焼結完了後、室温まで炉冷させ、焼結体を得た。
20 セラミック積層体
20a、20b、20c、20d、20e セラミックグリーンシート
21 ビアホール
22 内部電極
Claims (9)
- 未焼結セラミック積層体の上部面または下部面に配置するための拘束用グリーンシートであって、
前記セラミック積層体の上部面または下部面に配置される面を有し第1無機粉末を含む第1拘束層と、
前記第1拘束層の上部に配置される、前記第1無機粉末より密度が低い第2無機粉末及び前記セラミック積層体の焼成温度より低い温度で燃焼される燃焼材を含む第2拘束層と、
を備えることを特徴とする拘束用グリーンシート。 - 前記第1無機粉末は、1.0〜2.5μmの粒径を有することを特徴とする請求項1に記載の拘束用グリーンシート。
- 前記燃焼材は、炭素、黒鉛、活性炭、木材粉末、大鋸屑及び滑石で構成された群から選ばれた少なくとも1つの物質であることを特徴とする請求項1に記載の拘束用グリーンシート。
- 複数のセラミックグリーンシートからなる未焼結セラミック積層体を設ける段階と、
第1無機粉末を含む第1拘束層と、前記第1無機粉末より密度が低い第2無機粉末及び前記セラミック積層体の焼成温度より低い温度で燃焼される燃焼材を含む第2拘束層を含む1つ以上の拘束用グリーンシートを設ける段階と、
前記セラミック積層体の上部または下部に前記第1拘束層の一面を接合して前記拘束用グリーンシートを配置する段階と、
所定の焼成温度で前記セラミック積層体を焼成する段階と、
を含む多層セラミック基板の製造方法。 - 前記拘束用グリーンシートを設ける段階は、
前記第1無機粉末を含む第1スラリーをドクターブレード法を用いて塗布する段階と、
前記第2無機粉末及び燃焼材を含む第2スラリーをドクターブレード法を用いて前記第1スラリー上に塗布する段階と、
前記第1スラリー及び第2スラリーを乾燥させる段階と、
を含むことを特徴とする請求項4に記載の多層セラミック基板の製造方法。 - 前記セラミック積層体を焼成する段階は、前記第2拘束層に含まれた燃焼材が燃焼し空間が形成されることを特徴とする請求項4に記載の多層セラミック基板の製造方法。
- 前記第1無機粉末は、1.0〜2.5μmの平均粒径を有することを特徴とする請求項5に記載の多層セラミック基板の製造方法。
- 前記燃焼材は、炭素、黒鉛、活性炭、木材粉末、大鋸屑及び滑石で構成された群から選ばれた少なくとも1つの物質であることを特徴とする請求項4に記載の多層セラミック基板の製造方法。
- 前記セラミック積層体の焼成が完了し、前記セラミック積層体の上部または下部に積層された前記拘束用グリーンシートを除去する段階と、前記セラミック積層体上に外部電極を形成する段階をさらに含むことを特徴とする請求項4に記載の多層セラミック基板の製造方法。
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Application Number | Priority Date | Filing Date | Title |
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KR10-2007-0123036 | 2007-11-29 | ||
KR1020070123036A KR100930165B1 (ko) | 2007-11-29 | 2007-11-29 | 구속용 그린시트 및 이를 이용한 다층 세라믹 기판의 제조방법 |
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EP2265099B1 (en) | 2009-06-04 | 2013-11-27 | Honda Motor Co., Ltd. | Semiconductor device and method of manufacturing the same |
JP6597268B2 (ja) * | 2015-12-15 | 2019-10-30 | 株式会社村田製作所 | セラミック焼成体の製造方法 |
JP2017109895A (ja) * | 2015-12-15 | 2017-06-22 | 株式会社村田製作所 | セラミック焼成体の製造方法 |
KR102149988B1 (ko) | 2018-09-07 | 2020-08-31 | 대주전자재료 주식회사 | 파장 변환 부재 제조용 적층체 및 파장 변환 부재의 제조방법 |
KR102165558B1 (ko) * | 2018-12-05 | 2020-10-14 | 한국세라믹기술원 | 박형 세라믹 기판의 소성용 적층 구조체 및 이를 이용한 박형 세라믹 기판의 제조방법 |
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US4900698A (en) * | 1987-05-26 | 1990-02-13 | W. R. Grace & Co.-Conn. | Ceramic product and process |
JP2648918B2 (ja) * | 1987-09-11 | 1997-09-03 | 日東電工株式会社 | コーティング方法 |
US5254191A (en) * | 1990-10-04 | 1993-10-19 | E. I. Du Pont De Nemours And Company | Method for reducing shrinkage during firing of ceramic bodies |
JP2785544B2 (ja) * | 1991-10-04 | 1998-08-13 | 松下電器産業株式会社 | 多層セラミック基板の製造方法 |
JPH0730253A (ja) | 1993-06-25 | 1995-01-31 | Matsushita Electric Ind Co Ltd | 多層セラミック基板の製造方法 |
US6245171B1 (en) * | 1998-11-23 | 2001-06-12 | International Business Machines Corporation | Multi-thickness, multi-layer green sheet lamination and method thereof |
US6139666A (en) * | 1999-05-26 | 2000-10-31 | International Business Machines Corporation | Method for producing ceramic surfaces with easily removable contact sheets |
JP3591437B2 (ja) * | 2000-09-07 | 2004-11-17 | 株式会社村田製作所 | 多層セラミック基板およびその製造方法ならびに電子装置 |
JP4557417B2 (ja) | 2000-12-26 | 2010-10-06 | 京セラ株式会社 | 低温焼成セラミック配線基板の製造方法 |
JP2002353624A (ja) | 2001-05-25 | 2002-12-06 | Murata Mfg Co Ltd | 多層セラミック基板およびその製造方法、未焼結セラミック積層体、ならびに電子装置 |
JP2004288938A (ja) | 2003-03-24 | 2004-10-14 | Kyocera Corp | ガラスセラミック基板の製造方法 |
WO2005073146A1 (ja) * | 2004-01-30 | 2005-08-11 | Murata Manufacturing Co., Ltd. | セラミック基板用組成物、セラミック基板、セラミック基板の製造方法およびガラス組成物 |
JP2005264246A (ja) | 2004-03-18 | 2005-09-29 | Japan Fine Ceramics Center | 蒸着材及びその製造方法 |
JP2006100448A (ja) * | 2004-09-28 | 2006-04-13 | Kyocera Corp | 電子部品の製造方法 |
JP4029408B2 (ja) | 2004-12-17 | 2008-01-09 | 日立金属株式会社 | 難焼結性拘束用グリーンシート及び多層セラミック基板の製造方法 |
JP2006181737A (ja) | 2004-12-24 | 2006-07-13 | Kyocera Corp | 複合セラミックグリーンシート、複合セラミックグリーンシートの製造方法及び多層セラミック基板の製造方法 |
JP4235644B2 (ja) | 2005-12-01 | 2009-03-11 | 株式会社ニワショーセラム | 多孔質セラミック焼結体の製造方法 |
US7547369B2 (en) * | 2006-08-31 | 2009-06-16 | Ferro Corporation | Method of making multilayer structures using tapes on non-densifying substrates |
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KR100930165B1 (ko) | 2009-12-07 |
US7887905B2 (en) | 2011-02-15 |
KR20090056060A (ko) | 2009-06-03 |
JP2009135500A (ja) | 2009-06-18 |
US20090142582A1 (en) | 2009-06-04 |
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