Shenmao Technology Inc.

Chang-Meng Wang

Chih-Hao Chen

Albert T Wu

Hsiang-Chuan Chen

Chen-Yi Chen

Ruei-Ying Sheng

Yuan-Heng Zhong

A liquid composition includes copper particles, an organic acid, and a solvent. The copper particle has a particle size of 0.5 &#x3bc;m&#x2dc;30 &#x3bc;m which falls in a micron scale. The liquid composition performs reaction sintering by redox reactions taken place between the copper particles and an organic acid solution at a low temperature of 150&#xb0; C. in order to produce a dense copper layer and improve the conventional micron-scale copper particles that requires a protective atmosphere for the high-temperature sintering before achieving the required densification. This liquid composition also prevents an excessive oxidation of the nano copper particles during the low-temperature sintering process and a failure of the dense sintering. Due to the agglomeration of nano copper particles, some areas have to be sintered first, so that the sintered products have a good uniformity of tissue and a low resistance below 0.04 ohm per square (&#x3a9;/&#x25a1;).

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Taoyuan, Taiwan

Chang-Meng Wang