Patent ID: 6326672
Filing Date: 2001-12-04
Classification: H01L

Abstract:
A semiconductive material structure comprising:a semiconductive material substrate; andat least one composite block over the semiconductive material substrate, the composite block comprising;a layer of silicon dioxide over the substrate and having a pair of opposing sidewalls, the opposing sidewalls being a first silicon dioxide sidewall and a second silicon dioxide sidewall; anda layer of silicon nitride over the layer of silicon dioxide and having a pair of opposing sidewalls, the opposing sidewalls being a first silicon nitride sidewall and a second silicon nitride sidewall, the first silicon nitride sidewall being coextensive with the first silicon dioxide sidewall and the second silicon nitride sidewall being coextensive with the second silicon dioxide sidewall;a first polysilicon projection along and in physical contact with the coextensive first silicon nitride sidewall and first silicon dioxide sidewall of the composite block and in physical contact with the substrate; anda second polysilicon projection along and in physical contact with the coextensive second silicon nitride sidewall and second silicon dioxide sidewall of the composite block and in physical contact with the substrate.