conductive paste

Abstract

The conductive paste disclosed herein is a gravure printing conductive paste comprising at least conductive particles, dielectric particles, binder resin, dispersion medium, and dispersant. This conductive paste has a viscosity of 0.3 Pa·s or less at a shear rate of 10000 s⁻¹. Therefore, since the paste adhering to the outside of the cells is easily refilled into the cells, transfer defects can be suppressed. Furthermore, the phase angle δ of this conductive paste in dynamic viscoelasticity measurement at a frequency of 0.1 Hz is 45° or less. This type of paste, exhibiting elastic behavior during transfer, is less likely to remain in the center of the cells when transferred to the substrate surface, thus reducing the likelihood of saddle-shaped bulges. Therefore, according to the conductive paste disclosed herein, both transfer defects and saddle-shaped bulges in gravure printing can be suppressed.

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