Patent ID: 6340635
Filing Date: 2002-01-22
Classification: G03F,H01L,H05K,Y10S

Abstract:
A process for the formation of a wiring pattern, said process comprising the steps of:applying a resist onto an underplate feed film; exposing to a light the resist through a photomask having a first pattern whose line width is less than a resolution limit of the light and a second pattern whose line width is equal to or greater than a resolution limit of the light, with an exposure dose which resolves the second pattern completely; developing the exposed resist to form on the underplate feed film a resist pattern having the second pattern and a plurality of depressions which correspond to the first pattern and is provided on a surface of the resist pattern such that the depressions do not reach a surface of the underplate feed film; precipitating a plating metal on the feed film in a region not covered by the resist pattern; stripping the resist pattern after the precipitation; and removing the feed film selectively in a region not covered by the plating metal.