US Patent 7176575 Input/output routing on an electronic device

An electronic device includes a material having a first dielectric constant (K) value, and a material having a second dielectric constant (K) value. The first dielectric constant (K) value is lower than the second dielectric constant (K) value. The electronic device also includes input/output connection conductors for transmitting signals to and from a die. The input/output connection conductors are routed through the material of the interposer having the first dielectric constant. The electronic device also includes power connection conductors for delivering power to the die, and ground connection conductors. The power and ground connection conductors are routed through the material having the second dielectric constant.