Patent ID: 7705384
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. A nonvolatile storage element, comprising: a semiconductor substrate; a memory region provided on said semiconductor substrate in the order of a first insulating film, an electron trapping film, and a second insulating film, an entirety of said electron trapping film being coplanar and parallel to a substrate plane direction; and a first control gate and a second control gate arranged next to each other on said memory region, wherein said electron trapping film is comprised of a first electron trapping film formed below said first control gate, and a second electron trapping film formed below said second control gate and provided distanced from said first electron trapping film, and wherein an end part of at least one of said first electron trapping film and said second electron trapping film is positioned at the inside of an end part of said first control gate and said second control gate, respectively, in a cross-section in a gate length direction.