Patent ID: 10209613

Abstract:
An integrated extreme ultraviolet (EUV) blank production system includes: a vacuum chamber for placing a substrate in a vacuum; a first deposition system for depositing a planarization layer having a planarized top surface over the substrate; and a second deposition system for depositing a multi-layer stack on the planarization layer without removing the substrate from the vacuum. The EUV blank is in an EUV lithography system includes: an extreme ultraviolet light source; a mirror for directing light from the EUV source; a reticle stage for placing a EUV mask blank with a planarization layer; and a wafer stage for placing a wafer. The EUV blank includes: a substrate; a planarization layer to compensate for imperfections related to the surface of the substrate, the planarization layer having a flat top surface; and a multi-layer stack on the planarization layer.