Patent ID: 6410881
Filing Date: 2002-06-25
Classification: H01L,H05K,Y10T

Abstract:
A process for manufacturing an electronic circuit including disposing an electronic device on a circuit substrate, and hot-melting a solder material formed on said electronic device or said circuit substrate to bond said electronic device and said circuit substrate, said process comprising the steps of:irradiating a laser beam on said solder material to remove an oxide film on a surface of said solder material; feeding a liquid onto a connecting surface on said circuit substrate; aligning and mounting said electronic device on said connecting surface; disposing said circuit substrate in a treating vessel; heating said circuit substrate to hot-melt said solder material; controlling a pressure of an atmosphere in said treating vessel to prevent at least a portion of said liquid from evaporating until said electronic device and said circuit substrate are bonded; and making said liquid evaporate after said electronic device and said circuit substrate have been bonded.