WOVEN CLOTH FOR WIRING BOARD, AND PREPREG

摘要

PROBLEM TO BE SOLVED: To provide a woven cloth for a wiring board and a prepreg which are a precursor of a wiring board having a high density wiring and a high connection reliability and stacking reliability. SOLUTION: A single fiber has such a wave-like shape as to correspond to a pitch in which the woven cloth for a wiring board is woven. The length of the single fiber corresponding to one cycle of the wave-like shape is larger than 1 times and not more than 1.20 times of the cycle of the wave-like shape, resulting in reducing a spring effect of the single fiber. Consequently, there is no separation of a resin in the interface and an effect of reducing a coefficient of thermal expansion is increased. COPYRIGHT: (C)2008,JPO&INPIT