| Popis: |
An effective and practical control technology of critical dimensions for submicron VSLI is presented. An ARCOR (Anti-Reflective Coating On Resist) process was improved, which is applied as a transparent type anti-reflective coating. A water soluble and low refractive index film was developed for this purpose. The following five items were measured experimentally and discussed : (1) amplitude of swing curve's dependence on resist thickness, (2) thickness latitude of the ARCOR film, (3) photo speed, (4) CD variations in a submicron DRAM and (5) alignment accuracy with a bright field alignment system. |
