MEHRSCHICHTIGE GEDRUCKTE LEITERPLATTE UND VERFAHREN ZU IHRER HERSTELLUNG.

摘要

A multi-layer printed circuit board produced by laminating a plurality of unit circuit sheets via prepreg resin sheets, the cured resin in said unit circuit sheet having a glass transition temperature Tg1, said prepreg resin sheets having been prepared by impregnating a reinforcing substrate with a resin composition which can be cured at a temperature equal to or lower than both the glass transition temperature of Tg1 and that of Tg2 of the resin in the prepreg resin sheet after cured, and binding the laminated sheets with heating under pressure at a temperature equal to or lower than both the temperatures of Tg1 and Tg2, has excellent dimensional stability, heat resistance and through-hole reliability.