Patent ID: 7541653

Claim:
In a mask ROM device including a plurality of cell strings having a plurality of cells that are serially connected, respectively, wherein at least one of the cells is a programmed cell, the programmed cell comprising: a cell gate pattern including a cell gate insulating layer, a cell gate electrode, and a cell capping pattern comprising an insulating material, which are sequentially stacked on a substrate; cell source/drain regions formed in the substrate at opposing sides of the cell gate pattern; a cell insulating spacer formed at opposing sidewalls of the cell gate pattern; a cell metal silicide formed on a surface of the cell source/drain regions; and a cell metal pattern extended along surfaces of the cell insulating spacer and the cell capping pattern to be connected to the cell metal silicides at opposing sides of the cell gate pattern, wherein the cell capping pattern and the cell insulating spacer insulate the cell gate electrode from the cell metal pattern.