Patent ID: 6033940
Filing Date: 2000-03-07
Classification: B24B,H01L,Y10S

Abstract:
A method for fabricating a circuit substrate including: a plurality of semiconductor devices including electrodes and; a wiring having a plurality of branched portions and mainly formed of a metal material, the branched portions serving as the electrodes of the semiconductor devices, the method comprising the steps of:forming a semiconductor layer on a substrate;forming a layer mainly made of the metal material on the semiconductor layer and patterning the layer to form the wiring and a terminal for applying a voltage to the wiring, where the terminal is connected to the wiring;anodizing the wiring by applying the voltage to the wiring to form anodization films on the branched portions; andforming source and drain regions by implanting ions to the semiconductor layer,wherein the step of patterning the layer mainly made of the metal material includes simultaneously patterning an anodization controller for controlling degrees of anodization of the branched portions.