Patent ID: 8007989
Filing Date: 2011-08-30
Classification: C01G,C01P,C23C,G03F

Abstract:
1. A method for forming a patterned ferroelectric layer on a substrate, comprising: (a) forming a composite layer on a substrate, the composite layer comprising bismuth methacrylate, strontium methacrylate and tantalum dimethacrylate metal acrylate compounds, a photoinitiator compound and an acrylate crosslinking compound; (b) placing a photomask onto the composite layer, the photomask having areas that are transparent to ultraviolet light; (c) irradiating the composite layer, through the photomask, with ultraviolet light; (d) placing a solvent on the irradiated composite layer to remove non-irradiated areas of the composite layer from the substrate, a patterned composite layer being formed on the substrate; and (e) heating the patterned composite layer in an oxygen atmosphere to cause a chemical reaction among the bismuth methacrylate, strontium methacrylate and tantalum dimethacrylate metal acrylate compounds and oxygen, a patterned ferroelectric layer being formed on the substrate.