PREPREG FOR PRINTED WIRING BOARD AND MULTILAYER PRINTED WIRING BOARD

摘要

PROBLEM TO BE SOLVED: To reduce a difference between vertical and horizontal dimensional changes and to reduce the dispersion of dimensional changes in a printed wiring board and a multilayer printed wiring board. SOLUTION: In prepreg for a multilayer printed wiring board and the multilayer printed wiring board, glass fiber fabric of which texture density ratio of vertical and horizontal fibers is vertical/horizontal = 0.67 to 0.090 and weight is 20 to 110 g/m2is used and a difference between vertical and horizontal dimensional changes is≤0.005%. COPYRIGHT: (C)2003,JPO