COPPER-CONTAINING FINE-PARTICLE AGGREGATE AND PRODUCTION METHOD THEREOF
PROBLEM TO BE SOLVED: To provide a copper containing fine-particle aggregate which has low sintering temperature, suppresses viscosity rise of a paste and allows increase of the wiring density.SOLUTION: A copper-containing fine-particle aggregate contains copper and is formed by aggregation of a plu...
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Main Authors | , , , , |
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Format | Patent |
Language | English Japanese |
Published |
21.05.2015
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide a copper containing fine-particle aggregate which has low sintering temperature, suppresses viscosity rise of a paste and allows increase of the wiring density.SOLUTION: A copper-containing fine-particle aggregate contains copper and is formed by aggregation of a plurality of fine particles of particle sizes of 10-600 nm. The fine-particle aggregate has a thermal shrinkage initiation temperature in an atmosphere of 1% hydrogen-99% nitrogen of 80-300°C and particle sizes of 1.0-10.0 μm. The fine-particle preferably contains an organic polymer material further and no surface treatment agent consisting of an organic acid.
【課題】焼結温度が低く、ペーストの粘度上昇を抑制でき、更に配線密度を高くするできる銅含有微粒子集合体を提供すること。【解決手段】本発明の銅含有微粒子集合体は、銅を含み、かつ粒径が10nm以上600nm以下である複数の微粒子が集合して形成されたものである。この微粒子集合体は、1%水素−99%窒素雰囲気下での熱収縮開始温度が80℃以上300℃以下であり、かつ粒径が1.0μm以上10.0μm以下である。この微粒子集合体は、有機高分子材料を更に含むことが好適である。また有機酸からなる表面処理剤を非含有であることも好適である。【選択図】図2 |
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Bibliography: | Application Number: JP20130236791 |