Patent ID: 7157215
Filing Date: 2007-01-02
Classification: G03F

Abstract:
1. A photolithography process applying to a substrate, comprising: providing a photoresist layer that includes a photosensitive polymer, which absorbs an exposure light source to generate an optical reaction, and is oriented to a specific direction by a physical method, a specific direction being variable as an angle between the specific direction and a polarization direction of a polarized light changes; providing the exposure light source wit a first-polarized light and a second-polarized light perpendicular to each other, the first-polarized light having a transmission coefficient larger than tat of the second-polarized light; forming the photoresist layer on the substrate of which the specific direction of the photosensitive polymer has a response to the first-polarized light smaller tan a response to the S-polarized light to compensate for the difference of transmission coefficients, such that the optical reaction amount of the first-polarized light is about the same of the optical reaction amount; using the exposure light source and a photomask to expose the photoresist layer; and developing the photoresist layer.