FLASH MEMORY HAVING LOCAL SONOS STRUCTURE USING NOTCHED GATE AND MANUFACTURING METHOD THEREOF

摘要

A notched gate SONOS transistor includes: a substrate having source/drain regions; a gate insulator layer on the substrate between the source/drain regions; a notched gate structure, on the gate insulator layer, having at least one notch; and at least one ONO wedge structure in the at least one notch, respectively, of the gate structure.