Multilayer printed circuit board

Active solid-state devices (e.g. – transistors – solid-state diode – Housing or package – Insulating material

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Details

257702, 257723, 361750, H01L 2312

Patent

active

054831016

ABSTRACT:
A semiconductor package applicable to integrated circuits and other semiconductor devices of the kind needing high integration and high speed operation. The package has a printed circuit board implemented by a glass cloth impregnated with epoxy, bismaleimide-triazine (BT) or similar resin, a power source layer provided in the circuit board in a plate structure, a ground layer formed on the surface of the circuit board in a plate structure, and a thin film laminate wiring formed on the ground layer in a plate structure and consisting of copper and benzocyclobutene. The package desirably shields leakage currents and matches a characteristic impedance with accuracy, thereby noticeably reducing noise and enhancing high speed signal transmission.

REFERENCES:
patent: 4526835 (1985-07-01), Takahashi et al.
patent: 5137618 (1992-08-01), Burnett et al.

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