Patent ID: 6171740
Filing Date: 2001-01-09
Classification: H01L

Abstract:
A method for applying a metal catalyst to an amorphous semiconductor layer, said method comprising the steps of:a) image-wise exposing a photopolymeric layer to cause exposed areas of said layer to crosslink and exhibit an increase in resistivity in comparison with unexposed areas of said photopolymeric layer;b) charging said photopolymeric layer, said exposed areas of said photopolymeric layer retaining a charge longer than said unexposed areas;c) applying a catalyst metal containing toner to said photopolymeric layer, said toner attracted by retained charge on said exposed areas; andd) juxtaposing said photopolymeric layer toned in step c) to a layer of amorphous semiconductor and applying an electric field therebetween to cause said toner that is adherent to said photopolymeric layer to migrate to said amorphous semiconductor.