Insulating thick film composition calcined with a ceramic blank used in mobile communication devices consists of a first ceramic powder having the same setting system as the second ceramic powder contained in the blank

摘要

Insulating thick film composition calcined with a ceramic blank consists of a first ceramic powder having the same setting system as the second ceramic powder contained in the blank. The average particle diameter of the first ceramic powder is smaller than that of the second powder. Preferred Features: The average particle diameter of the first ceramic powder is 10 % smaller than that of the second powder. The average particle diameter of the second ceramic powder is 0.5-10 microns m and the average particle diameter of the first ceramic powder is 0.45-9 microns m. The thick film composition contains a maximum of 3 % oxide powder of Cr, Co, Cu, Ni, Fe or Ti.