Patent ID: 6461917
Filing Date: 2002-10-08
Classification: B82Y,H01L

Abstract:
A method for manufacturing a memory device comprising the steps of:forming a conduction region for memory and a conduction region for selection made of semiconductors on a base portion made of an insulator; forming a tunnel insulating film on the conduction region for memory; forming a storage region comprising a plurality of particulates dispersed on the tunnel insulating film; forming an insulating film for controlling memory on the storage region while forming an insulating film for controlling selection on the conduction region for selection; forming a control electrode for memory on the insulating film for controlling memory while forming a control electrode for selection on the insulating film for controlling selection; and forming a first impurity region adjacent to the conduction region for memory, a second impurity region separated from the first impurity region and adjacent to the conduction region for memory and to the conduction region for selection, and a third impurity region separated from the second impurity region and adjacent to the conduction region for selection.