Patent ID: 8163446

Claim:
A method for fabricating a photomask using a self-assembled molecule layer, comprising: forming on a non-conductor transparent substrate a stacked structure of a phase shift pattern and a light shielding pattern over the phase shift pattern, the stacked structure exposing a portion of a surface of the non-conductor transparent substrate; exposing the phase shift pattern and said portion of the surface of the non-conductor transparent substrate by removing a portion of the light shielding pattern; forming a self-assembled molecule layer on the exposed surface of the non-conductor transparent substrate except the phase shift pattern and the light shielding pattern wherein the self-assembled molecule layer allows movement of electrons; measuring a critical dimension of the phase shift pattern by injecting electrons, wherein the self-assembled molecule layer prevents accumulation of the injected electrons on the non-conductor transparent substrate by movement of electrons; and removing the self-assembled molecule layer to expose the surface of the transparent substrate.