LOW DIELECTRIC CONSTANT LOW DIELECTRIC DISSIPATION FACTOR GLASS, AND GLASS FIBER AND GLASS FIBER FABRIC USING THE GLASS

摘要

PROBLEM TO BE SOLVED: To provide glass of low dielectric constant and low dielectric dissipation factor capable of obtaining a glass fiber suitable for glass fiber fabric to be used for reinforcing material for printed wiring board for high frequency use.;SOLUTION: This low dielectric constant and low dielectric dissipation factor glass has a composition of 48-80% SiO₂, 0-18% Al₂O₃, 11-35% B₂O₃, 0-10% MgO, 0-10% CaO, 0-7% Li₂O+Na₂+K₂O, and 3% TiO₂, in terms of mass%, and H₂O is 800 ppm, dielectric constant is ≤0.5 at 1 MHz, and the dielectric dissipation factor is ≤7×10^-4.;COPYRIGHT: (C)2003,JPO