Patent ID: 11923465
Assignee: STMICROELECTRONICS (CROLLES 2) SAS
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A device, comprising:
an active area; and
a memory area adjacent to the active area, the memory area including:
a first storage region and a second storage region;
a first insulated conductive wall between the first storage region and the active area, the first insulated conductive wall extending along a first direction;
a first opening in the first insulated conductive wall, the first opening between the first storage region and the active area;
a second insulated conductive wall extending along the first direction, the second insulated conductive wall being between the first storage region and the second storage region and comprising:
a first portion having a first length along the first direction and a first surface along the first length, the first surface being adjacent to the first storage region; and
a second portion separated from the first portion, the second portion having a second length along the first direction that is smaller than the first length and a second surface that is coplanar to the first surface; and

a second opening between the first portion and a first side of the second portion of the second insulated conductive wall, the second opening being between the first storage region and the second storage region.