Patent ID: 6593250
Filing Date: 2003-07-15
Classification: H01L

Abstract:
A semiconductor device fabrication method comprising:forming a first low dielectric constant film having a specific dielectric constant of k less than 3 (k<3) over a wafer so that an edge of the first low dielectric constant film aligns with a first position along the circumference of the wafer; forming a first protection layer having a gas permeability lower than that of the first low dielectric constant film over the first low dielectric constant film and the wafer, so that an edge of the first protection layer aligns with a second position that is located outside the first position; and forming a second low dielectric constant film having a specific dielectric constant of k less than 3 (k<3) over the first protection layer so that an edge of the second low dielectric constant film is aligned with the first position.