Method for eliminating engraving defects of a metallic layer deposited on a flexible support

摘要

The method involves spraying a liquid pressurized to about 1500-3000 pound per square inch onto multiple mask projection laser ablation engraving defects in a metal film deposited on a flexible carrier i.e. plastic film. The liquid is sprayed at an angle greater than or equal to 30 degree with the metal film or perpendicular to the metal film. The liquid is de-ionized water that is re-ionized before spraying. The flexible carrier is made of a material selected from a group consisting of polyethylene naphtalate (PEN), polyethylene terephtalate (PET) and polyimide.